Ever since you’ve added lights to your own scene, and adjusted their choices and controls, you press Make. Your first render is, from best, a rough draft of what you would like to develop into a qualified final product. Most of your time and effort in lighting is spent revising in addition to improving the setupthis is the location where the real work gets done. The art of lighting is actually the art of revising lighting style, to get it to look competitive with possible by your deadline. When to Light When you find yourself working in the early stages of an project, like modeling, rigging, or maybe layout, you probably don’t want to spend a lot of time on lighting. At most, you can use a simple lighting rig that helps you see the models. By plenty of time animation is being test-rendered, it may be beneficial to have at least one particular light casting a shadow. In the event you render animation without any shadows, it is possible to overlook physical contact mistakes, for a foot not making contact while using ground. These kinds of mistakes can be apparent in a fully lighted scene, so it is best whenever you can see them when testing cartoon. The real lighting process begins when your layout is conducted: You know where your camera shall be positioned and how the shot consists, your animation is complete, and you will observe where the characters will appear through the entire shot. Also, your shaders in addition to textures are finished, so you will observe how objects will respond to be able to light. Sometimes production schedules will force to do lighting work while revisions are increasingly being made to the animation as well as to the camera. This is definitely unfortunate necessity. Lighting a scene that continues to be changing will waste plenty of your time, because you will likely need to go back and change your own lighting (sometimes multiple situations) in reaction to changes designed to the animation, shaders, or textures. The Feedback Loop An indispensable part of refining your scene is a feedback loop: making changes, waiting to check out the results of each alter, evaluating those results, and after that making more changes. The key listed here is a tight feedback loop, which means seeing results at once after making changes. This results in a quicker work pace in addition to allows more refined results over a tight schedule. How can you obtain feedback faster? For some sorts of changes, such as changing the position of an light or adjusting the size of an spotlight’s cone, most modern a model in 3d software supports real-time feedback, which tells you the basic illumination, highlights, and shadows while you drag the light. What’s accessible in real-time is limited, nonetheless, and usually doesn’t show a person how everything will appear in the final render. When you tend to be doing software test-renders, you should think of ways to conserve rendering time. Leave visible in your world only those objects that you should certainly see in each render; hide the rest. If there are any particularly complex models within your scene, sometimes a simpler object work extremely well as a stand-in while a person adjust lights around it. If you’re adjusting one specific light or maybe shadow, hide all the other lights within your scene, so you are making only with that light. As mentioned previously, soloing a light gives a person a clearer view of just what the light is contributing towards scene, but it also saves priceless rendering time by skipping the calculation in the other lights and shadows within your scene. Most changes can be made while thinking about only part of your imagecrop a spot that only shows you things you require to see, rather than rerendering all the frame. Even when lighting picture resolution shots, render your earlier tests in the video resolution, and render not many frames from the shot at full resolution until you might have the lighting approved. Turn off any functions or effects that aren’t a compenent of what you are currently adapting. You can light a nature without her hair visible from the shot for most of your own test renders, and then do not many tests with hair visible when you find yourself working on the hair lighting style. You do not need time-consuming functions for example raytracing, global illumination, or high-quality anti-aliasing turned on during your entire test renders. Since computers have become faster, you may wonder why you even need to read all of these optimization in addition to test-render tricks. Even though computers get faster yearly, computer graphics productions also always get more complex and press the limits of even that newest hardware. Learning to work smart in addition to think strategically before each render is often a skill you’ll need later within your career .

In the event you render elements in separate moves and layers, you can make many changes for a scene in a compositing system, which allows some kinds of changes that they are made interactively without rerendering. Naming Lights Naming becomes especially important when you find yourself installing lights that more compared to one person will use or maybe edit. If you expect other people and therefore make sense of your lighting style design, or if you would like to avoid mistakes that arise through confusing one light and a further, take care to label just about every light clearly. The most informative names refer to the light, its motivation, and what it really is illuminating. For example, “Spec_fromMatch_onEyes” will tell you that a light was created to create specular highlights, motivated by just a match, illuminating the character’s face. “Bounce_fromRedCarpet_onSet” describes light bouncing heli-copter flight red carpet onto the remaining set. Most studios have a lot more exacting naming conventions. Exactly which conventions you follow doesn’t matter around making sure that everyone follows a similar set of rules, consistently wanting to create helpful names for every light. Organizing your lights into clearly named groups is additionally important. If you have some equipment and lighting used for similar purposessuch as exterior lights being released in through windows of a placed, interior lights on the placed, lights added around a distinct character, or lights associated which has a particular effect, then grouping the lights in addition to giving the groups intuitive names makes them no problem finding and adjust, and easier to save lots of as separate files and recycle in another shot. Managing Versions You can go through many versions of an scene before you achieve a last, approved lighting setup. When you save your valuable versions, be sure to conserve the rendered images, and also save the lights from the scene used to render the idea. If you have just shown a version of an scene to the client, you can make a folder with a backup in the 3D files and the caused to become images from that version, to enable you to go back and retrieve which version if needed. Often you can go backwardclients do request changes some day and then ask you to revert into a previous iteration. Often when a person make two versions of some thing, you will be asked to be able to “split the difference” between a previous version and also the current one, making it vital not to lose an association between the 3D scenes used and also the images that you show towards client. When you compare two versions of your image, it’s best to compare them from the same window, flipping back in addition to forth between the old in addition to new images. Viewing images also, it would be difficult to be able to detect every change, but when viewing both versions from the same window, you can see even essentially the most subtle changes, because they appear as motion to the screen when you flip among them. Comparing a pair of glasses before and after a alter is great for testing your special work, and is also useful in showing requested changes into a client or director.

Autofocus is standard, and quite a few current cameras employ a “wide area” or maybe “multipoint” autofocus
system that can set focus even over a subject that is not in the biggest market of the frame. This
useful feature helps you shoot quickly, without first centering the topic. It also encourages
better arrangement, with the subject placed off-center in more of one’s pictures. Many
cameras offer a further valuable option, allowing single sensor selection to get more accurate
control over the exact issue of focus—on the eyes in the portrait photo, for example.
Many cameras also include autofocus choices for “landscape” (for infinity concentrate) and
“macro” (through 1″ to 5″, for case in point. )#) Useful for subjects which might be extremely close, or very
considerably, from the camera, these tend to be accessed with an analog manage. If you select one connected with
these, remember to reset that camera to conventional autofocusing after.
An increasing number of sleek and stylish cameras include a Continuous Autofocus method,
which allows the camera to continuously change focus while you point the lens toward content
at different distances. This feature is primarily helpful to reduce the time delay among pressing
the shutter button and also the instant of exposure. It is different then the Continuous “tracking”
focus accessible with SLR cameras, for follow-focusing doing his thing photography. A compact digicam’s
Continuous focus system just might keep up with the motion of an slow-moving subject,
such as an individual walking, but it will not necessarily produce sharp images of more quickly motion.
More and more digicams also give a rudimentary manual focus system which allows
you to preset focus for virtually every of several distances; such systems usually are not very versatile or convenient
to make use of. This is not a feature you should have unless you often photograph areas, a
situation in which the power to set focus to a particular distance can be essential.

WHAT LIGHTING EQUIPMENT MUST NEED?
We expect you to be able to ask this question, so you’ll find a precise and definitive
response ready. We do not would like to leave out any details, therefore this
will be another two-part response:
1. No photographer has enough lighting equipment to perform
every assignment as well as you possibly can. No matter how much
lighting equipment you might have, there will be times if you want
more. Suppose, for example, it is possible to illuminate a large set to be able to
shoot at f/180 in 1/1000 next. (Please call the hearth department
before turning on this specific apparatus. )#) You will in all probability then find
that you want still more light in the particular shadow, or you may possibly
find that you need to be able to light a still larger area to suit the required
composition.
2. Most photographers have enough equipment to perform almost
every assignment well. In case you have no lighting equipment
whatsoever, you may be able to give you that boost. Can the subject be photographed
outdoor? If not, sunlight through a window is often a
good light source. Inexpensive gear, such as white cloth, dark-colored
paper, and aluminum foil, can help you control sunlight as
effectively because the best manufactured equipment.
Good lighting equipment fantastic convenience. If the sun
moves too far across the sky before you are prompted to expose, you may
have to wait until it returns in the mail and hope there is forget about
and no less cloud cover cost-free time around. Professional photographers
understand that convenience becomes necessity when they will
have to photograph what your customer wants when the client would like.
This message is not targeted at professionals, however. They
already have learned to do whatever is needed by using whatever is avail-able. We tend to be more interested in encouraging students right now. You
have advantages that professionals usually do not. Within broad limits,
you can select the type of your subject.
Small vistas require less light. You won’t have a 3-× 4-meter
fluffy box, but a desk lamp which has a 60-watt bulb with a dating paper
diffuser can light a smallish subject identically. Within broad restrictions,
you can also select the most beneficial time to shoot the snapshot. Getting an
assignment done sometimes before next week’s class from 10: 00 on
Thursday is less demanding than having a scheduled appointment to do the
job among 9: 00 and 10: 00 about Thursday.
Lack of equipment is often a handicap. You know it in addition to we know
it. But the lack seriously isn’t an insurmountable obstacle. Creativity
can certainly overcome it. Just remember which creative lighting occurs
primarily within planning the lighting. Part of this creativity means
anticipating the limitations and deciding how to cooperate with them.

Mt. Everest, June 8, 1924, 12:50 pm: George Mallory
(“because it is there”) and Andrew Irvine are spotted
800 vertical feet below the peak and “going strong for the top.”
Neither climber was ever seen again. Did they perish as they
continued their ascent or after having reached the summit,
29 years before the successful climb of Sir Edmund Hillary and
Tenzing Norgay? An answer—a photograph from the top—
may exist in one of the Kodak Vest Pocket Model B cameras
the two carried, a “miniature” (for the day) camera that had
become very popular with soldiers during World War I. In
1986 Tom Holzel, fascinated by the possibility, organized an
expedition led by Andrew Harvard with the express intent of
recovering those cameras. The team was eventually defeated by
10 days of continuous blizzards with temperatures of –30°F,
100 mph winds, and an avalanche that cost the life of sherpa
Dawa Nuru. Mallory’s body, but not Irvine’s, was subsequently
recovered by the Simonson Expedition of 1999, but no cameras
were found.
Our role during the ascent in 1986 was to identify a best
technique for developing the Kodak NC (Non-Curling) Film,
had a camera been recovered—film that would have had 62 years
of exposure to extreme cold, severe dehydration, and intense
radiation. We were fortunate to obtain for experimentation a roll
of identical film, expiration dated March 1, 1926, from Kodak’s
Patent Museum. The tin wrapping and wood and metal spool
were forwarded to Holzel to better tune his metal detectors.
Analysis of the film coupled with a review of archived Kodak
literature furnished us with information about the product’s halide
content, grain size, silver coverage, and chemical and optical
sensitization. ISO speed was estimated from the camera’s
construction and exposure recommendations included in its
operating instructions. Using a radioactive cobalt source, we had a
portion of the film exposed to an amount of radiation deemed
equivalent to six decades atop Everest, roughly the same as a roll
stored in Rochester would have received had it arrived on the
Mayflower. There was, of course, no way to mimic the actual
latent image age and cold storage. Snippets of the film were
imaged and subjected to a variety of development protocols.
Our best results derived from development by inspection
with a Kodak No. 1 safelight in Kodak Developer D-76
containing 5 mg/l of 5-methylbenzotriazole. Printing the
images on a grade 5 paper afforded a density range of 0.3 units,
very weak but clearly discernible. Remarkably, the irradiated
and unirradiated samples showed little difference in density
scale, though the former had a signif icantly higher fog level.
Among other developer additives explored were various
traditional antifoggants and chemicals capable of enhancing
grain-internal latent image (surface latent image could contain
appreciably more fog) such as sodium thiocyanate, potassium
chloroaurate, mercaptopropionic acid, and others, but none
yielded better image discrimination.
As word of our efforts spread, several other rolls of film
were donated that had been found, exposed but unprocessed,
in old cameras. These ranged from one found some 30 years
earlier in a Rochester bedroom to one exposed some 70 years
earlier and stored in a presumably very hot attic in Paris. By
processing snippets from the edges that extended perhaps a
quarter inch into the image area, we were able to explore
many more developer variations. Long story short, we did not
find any panacea procedure that worked with all old f ilms,
but we did make some interesting discoveries along the way.
One or the other of two distinctly different protocols usually
yielded the best results. The gentler of the two was to presoak the
film for two minutes in a 0.1% solution of potassium iodide
followed by development in Kodak Developer D-76. This failed
totally with the oldest films that had suffered the worst storage
conditions, but the presoak and seven minutes in D-76 gave
remarkable results with newer films, one of which yielded images
that looked like they had been exposed earlier in the day on freshly
manufactured film. The newest telltale we found on this roll was a
1956 Chevy, putting the latent image age at about 30 years.
The second and much more aggressive technique was to
use the same potassium iodide prebath followed by
development (often for only two or three minutes) in Kodak
Rapid X-Ray Developer (KRX) containing an additional 0.5
g/l of potassium iodide. This severely fogged the newer rolls
but worked rather well, considering, with the oldest. The
frame in the image plane, if any, was consistently the weakest
and discrimination always improved from the outside to the
inside of the rewind core. One roll in particular, estimated to
have been exposed about 1916, displayed images from an
ancient amusement park. Although prints on grade 5 paper
were still exceedingly f lat, faces were clearly recognizable.
But the film of Mallory and Irvine? The world may never
know. Readers who would like to learn more about their
attempt and subsequent searches for those pioneers and their
cameras may enjoy reading The Mystery of Mallory & Irvine,
by Tom Holzel and Audrey Salkeld, Mountaineers
Books, 2000 (ISBN 0-89886-726-6). ?
Dick Dickerson and Silvia Zawadzki are retired Kodak black-andwhite
product builders who have authored numerous articles for PT.
They can be contacted at querybw1@aol.com. Dick and Silvia reside
in Rochester, NY.

from PHOTO Techniques

by Dick dickerson & Silvia zawadzki

There are three different types of meter that are used in
interior photography: a light meter, a flash meter and a
colour meter. The first two are essential equipment and
sometimes come in combined form, while the latter is
optional, for critical work.
Light meters
A light meter is necessary for measuring the ‘natural’
available light in an interior before any supplementary
photographic lighting is added. Since this is often treated as
the dominant light source for the most natural appearance
of a room, its correct measurement is of fundamental
importance.
A hand-held meter can measure light in two ways. It can
either record a direct reflected reading, which measures the
quantity of light reflected off the subject (its brightness or
luminance); or it can record an incident reading to measure
the amount of light falling on the subject. Incident readings
are more consistent as they are not affected by the reflectivity
of the materials onto which the light is falling. However,
whether reflected or incident readings are taken, an average
brightness must be deduced from the whole of the subject
area. While a spot meter, which measures reflected light with
a 1° angle of measurement, is useful for determining the
variations in light level across an interior, the centre-weighted
metering system in a 35 mm SLR camera is useful for
deducing a working average from several different readings
across the picture area.
Whichever type of light meter is chosen, experience of it
is the best way of achieving consistent results. If you are used
to ‘reading’ the metering system of a 35 mm SLR camera,
then this is probably your best choice. If not, incident
readings on a hand-held meter are equally effective.

INTRODUCTION TO THE CONCEPT OF VARIABILITY

Photographers are by necessity experimenters.
Although they are not thought of as scientists
operating in a research atmosphere,
they most certainly are experimenters: Every
time an exposure is made, and the negative is
processed, a genuine experiment has been
made. There is no way the photographer can
precisely predict the outcome of such an experiment
in advance of doing the work. The
objectives of the experiment derive from the
purpose of the assignment, and the procedures
flow from the photographer’s technical
abilities. The success of the experiment will
be determined by evaluating the results. Finally,
conclusions are reached after interpreting
the results, which in turn shape the
performance for the next assignment/experiment.
It is the last step in the sequence,
namely, the interpretation of test results and
the conclusions reached, that we will be concerned
with in this section.
A great deal of what is written about the
practice of photography consists of opinions.
When someone states that “black-and-white
photographs are more artistic than color photographs”
or that “condenser enlargers are
better than diffusion enlargers,” it represents
an expression of personal judgment. Such
statements are properly referred to as subjective
because they arise from personal attitudes.
Because opinions are statements of
personal feelings, they are neither right nor
wrong and, consequently, are always valid.
The problem with subjective opinions is
that they lead to conclusions that are not
easily tested and analyzed. Therefore, when
one relies solely on personal opinion, the
possibilities for obtaining new insights into
the photographic process become very
limited.
Because of the potential ambiguity of subjective
opinions, it is often preferable to use
numerical expressions that have been derived
from measurements. Such numbers
can be considered objective in that they are
generated outside of personal attitudes and
opinions. For example, the blackness of a
photographic image can be measured with a
densitometer and the result stated as a density
value. Such a numerical expression of
its appearance can be obtained by independent
workers and therefore verified. Although
there may be many subjective opinions
about the blackness of the image, there
can be only one objective statement based on
the measurements. Consequently, a goal of
anyone who is experimenting is to test opinions
with facts that usually are derived from
measurements.
Whenever an experiment is performed and
a result obtained, there is a great temptation
to form a conclusion. For example, a sample
roll of a new brand of film is tested and
found to give unacceptable results; most
photographers would not bother to purchase
another roll. On the other hand, if the temperature
of a processing bath was found to be
68° in the bottom of the tank, many people
would act as if it was the same everywhere.
Such conclusions should be resisted because
of a fundamental fact of nature: No two
things or events are ever exactly alike. No
two persons (not even so-called identical
twins) are exactly alike and no two snowflakes
are ever identical. Photographically
speaking, no two rolls of the same brand of
film are exactly alike. No two frames on the
same roll, no two areas within the same
frame and indeed no two silver halide crystals
are ever truly identical. If the inspection
is close enough, differences will always be
found. Stated more directly, variability always
exists.
In addition to these differences, time creates
variations in the properties of an object.
The photographic speed of a roll of film is
not now what it was yesterday, nor will it be
the same in a few months. Using this point of
view, an object, say a roll of film, is really a
set of events that are unique and will never be
duplicated. As the Greek philosopher Heraclitus
long ago said, “You cannot step in the
same river twice.”
With this view of the real world, it should
be obvious that an essential task of the photographer/
experimenter is to determine the
amount of variability affecting the materials
and processes being used. This will require
that at least two separate measurements be
made before reaching a conclusion about the
characteristics of an object or process. A photographer
who ignores variability will form
erroneous conclusions about photographic
materials and processes, and will likely be
plagued by inconsistent results.

Turn Off Vibration Reduction

The big rage in digital lenses these days are the Vibration Reduction (VR) lens from Nikon and the Image Stabilization (IS) lens from Canon, which help you get sharper images while hand-holding your camera in low-light situations. Basically, they let you hand-hold in more low-light situations by stabilizing the movement of your lens when your shutter is open longer, and honestly, they work wonders for those instances where you can’t work on a tripod (like weddings, some sporting events, when you’re shooting in a city, or just places where they simply won’t let you set up a tripod). If you’re in one of those situations, I highly recommend these VR or IS lenses, but depending on which one you use, there are some rules about when you should turn them off. For example, we’ll start with Nikon. If you are shooting on a tripod with a Nikon VR lens, to get sharper images turn the VR feature off (you do this right on the lens itself by turning the VR switch to the Off position). The non-technical explanation why is, these VR lenses look for vibration. If they don’t find any, they’ll go looking for it, and that looking for vibration when there is absolutely none can cause (you guessed it) some small vibration. So just follow this simple rule: When you’re hand-holding, turn VR or IS on. When you’re shooting on a tripod, for the sharpest images possible, turn VR or IS off. Now, there are some Nikon VR lenses and some older Canon IS lenses that can be used on a tripod with VR or IS turned on. So, be sure to check the documentation that came with your VR or IS lens to see if yours needs to be turned off.

By Scott Kelby

he Digital Photography Book: The Step-By-Step Secrets for How to Make Your Photos Look Like the Pros’! ]]> http://affectionphotograph.com/turn-off-vibration-reduction-is/feed/ 109 http://affectionphotograph.com/tripod/ http://affectionphotograph.com/tripod/#comments Sun, 25 Jul 2010 18:52:31 +0000 photo http://affectionphotograph.com/?p=285 Tripod The importance of a robust, sturdy tripod cannot be overstated. Interior photography inevitably necessitates long exposures – for which a heavy-duty professional tripod is essential. Both the changing of film backs and pulling out exposed sheets of instant-print film are substantial, jerky movements throughout which the camera must be held rocksteady to avoid even the slightest displacement from its critical position. Resetting a camera position if it has been displaced for any reason is a time-consuming and frustrating business, as it involves rechecking all the settings, including the focus. Professional tripods are made up of two parts: the head and the set of legs, both of which are bought as separate items to suit the purpose for which they are required. A good head and a good set of legs are each likely to cost a similar amount, so allow for this when making your choice. Though usually a little more expensive, it is best to buy a black tripod as this eliminates the problem of its reflection in glass or other reflective surfaces in the picture. Other than being sturdy and black, check that the legs (including the central column) extend to a height at least as high as your eye level and preferably somewhat higher for extra flexibility. Screw tighteners, rather than clips, for locking the legs in position are also a sensible choice as they avoid any possibility of a clip snapping off. The legs should have rubber feet to prevent the possibility of any instability from slipping or sliding on a smooth floor. With regard to the head, it is essential for it to be heavy and to have plenty of available movement in the three dimensions, with large hand-sized handles with which to make necessary fine and tight adjustments. It is also useful to have the movement in each direction calibrated in degrees of angle: by zeroing everything, the operation of roughly setting up the camera in the first instance is speeded up; and if different critical angles of a view need to be taken this calibration makes it possible. Finally, a quick-release plate is another handy, timesaving device much to be recommended. It consists of a metal shoe that is screwed firmly into the base of the camera, and simply clicks in and out of the socket on the tripod head. ]]> http://affectionphotograph.com/tripod/feed/ 552 http://affectionphotograph.com/getting-started-with-raw/ http://affectionphotograph.com/getting-started-with-raw/#comments Fri, 23 Jul 2010 16:48:47 +0000 photo http://affectionphotograph.com/?p=281 This photograph was captured as a CRW (Canon Raw Format) file. It is an 8-bit file or 16 bits? Can you tell the difference? Image was made with Canon EOS D60 at 1/180 second and f/9.5 in Program mode at ISO 100. Lens was EF 22–55 f/3.5-mm zoom lens at 22 mm. (Pssssst: it’s an 8-bit file.) © 2004 Joe Farace. I’ve been shooting with digital SLRs and digicams with RAW capture capability for some time, but only occasionally used that format when making photographs. Why? At the time, most of the software provided or sold to you by the camera manufacturers for the explicit purpose of working with RAW files were simply not that good, and were more often than not difficult and non-intuitive to use. Fortunately, this is finally starting to change. The process of converting from RAW to whatever format became more intuitive with the availability of Adobe Camera RAW. All of a sudden the Adobe software provided a logical progression from RAW capture to a working image onscreen. Once the jump into Camera RAW was accomplished, the next question became how many bits are enough? ]]> http://affectionphotograph.com/getting-started-with-raw/feed/ 12 http://affectionphotograph.com/what-is-camera-raw/ http://affectionphotograph.com/what-is-camera-raw/#comments Fri, 23 Jul 2010 10:55:06 +0000 photo http://affectionphotograph.com/?p=276 What is Camera Raw? The fi rst thing to understand about camera Raw is that it is not one fi le format, but many. Camera Raw formats are proprietary, developed by camera manufacturers to best handle the data produced by individual models. Hence, the Raw file format produced by Canon’s EOS 5D will diff er from that produced by the Nikon D3 and even from other Canon dSLRs. Though there are some important diff erences, Raw is just another fi le format like JPEG or TIFF. The major diff erence is that Raw fi les contain unprocessed data from the camera sensor. Before Raw data can be viewed as an RGB image, they have to undergo a number of processes. If you shoot in an RGB format, such as TIFF or JPEG, this processing is done in the camera. If you shoot Raw, the same is done by Raw decoder software like that used in Aperture. by Apple Aperture 2. A Workfl ow Guide for Digital Photographers ]]> http://affectionphotograph.com/what-is-camera-raw/feed/ 76