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Below article featured in the Southeast Equine Magazine October 2006 issue.... How to get the best prints from your digital camera Good
photography along with excellent image resolution will enhance your
chances of selling what is best about your horse, whether it be his
conformation in the ring, his stamina on the course, or the foals he
sires. Without pristine resolution, how will the people viewing your
image “see” your horse’s movement, his musculature, the velvety
softness of his muzzle, or the delicate flare of his nostrils? They
won’t. Think
of the word imagine, and then think of the word image. Imagine
an image that evokes the actual feel of a horse’s breath on a frosty
morning. For an image to be successful it must bring forth
spontaneous emotion from its viewer. If your image has to pull
feelings from the viewer as if pulling teeth, then don’t waste the money
printing. If you’re selling your favorite mare and she’s great
with kids, don’t take a picture of her with her muzzle buried in a
bucket of grain, because buyers might think, “I wonder how much it will
cost to feed her through the winter”. Take an image of your mare
snuggled up against one of the kids, or have one with arms wrapped around
her neck. These images speak directly to the buyer and
shout…“Hey, one very kid friendly mare for sale!”. Digital
“point and shoot” and SLR (single lens reflex) cameras have evolved
from the days of film to provide surprisingly compact computerized
controls to help ensure quality photos. Images can be taken
digitally and saved in low, medium, or high resolution image files. So,
the problem is more about DPI (dots per inch). Cameras
are much like computers in that they have “storage devices” to hold
the data captured. To maximize space, you might be tempted to reduce
the image size. DON’T, because the fewer the dots per inch, the
more white space there will be between the dots, and the print quality
will be reduced proportionately. You can reduce a larger file and
maintain integrity, but you can’t easily add dots to a smaller image and
have it appear normal. When
trying to make an image larger than as captured, the computer must guess
where to add pixels or colors to approximate your requested larger size.
This is called interpolation and is the reason why some images
appear blotchy, fuzzy, or incorrectly toned when printed. When
it comes to graphic file formats there are two types, one that saves an
image without any loss (lossless) and the other where it intentionally
gets rid of data information (lossy), but still keeps the appearance of
the original picture. Visually on a monitor, these two types are
difficult to differentiate, but when it comes to the printed page, WATCH
OUT! When saving image files, what you see is NOT always what you
get when you print. Most
digital cameras save in JPEG (.jpg), which is a “lossy” file format,
because its compression algorithm enables you to store more images,
resulting in poor quality prints when not used properly.
Assuming your camera has a one gigabyte memory card, depending on the
image settings, you could store 120, 240 or 360 images. Always opt
for the least number of images, because that means each image is larger.
Larger image files = BETTER prints = less pictures captured! Your
camera may also allow you to save your image files as .TIFs (Tagged Image
File). TIF is a “lossless” file format that creates large image
file sizes, while maintaining your true image data. For those
scanning old negatives or photographic prints, please use the .TIF format
to save your scanned images and archive to CD or DVD for safekeeping. Automatic
presets provided by your camera, usually have .JPG format as the default.
Set your camera to take the picture at the highest quality possible
to ensure a larger .JPG, .TIF, or RAW file format for optimal printing
later. To prevent further data loss when saving a JPG file, do not use “Save As” to rename a file, choose “Save”, then rename the file using your file manager software. This keeps your editing program from compressing the file even more. JPG allows for image compression settings from one through twelve, with one providing the most compression, resulting in a greatly reduced size, and twelve the least compression, which helps retain the image’s data quality and best option for ensuring a decent print. If
your compression setting is below “12”, each time the file is saved
your image has the potential to lose pixel data and worsen. To
prevent this problem, after editing, save the edited image in TIF file
format, which retains all the image data without loss. Use the JPG
file compression only when “resaving” your images for display on the
web or for sending to friends through email, when smaller sizes are more
appropriate. Your
best possible prints will be when operating your camera under manual
control and at optimal data capture. Some inexpensive cameras have
the ability to generate “lossless” file format images and will use TIF
for this purpose. Most SLR digital cameras offer their own
“lossless” file formats called RAW images, but will often not do so
unless your camera is set to a manual control option. Canon’s RAW
file format suffix is denoted by CRW or CR2, while Nikon’s is known by
NEF. RAW format can be likened to film strip negatives,
basically unprocessed data that has been captured but not yet manipulated.
Rather than using chemicals, the digital age now uses the computer as its
darkroom and the camera’s graphic manipulation software as its film
developing solution. Camera
settings in RAW are saved in a header rather than within the file itself,
and it’s the header that is actually used to display your image when
viewed in your camera’s software. Your camera’s RAW
software settings can be manipulated numerous times to reflect your
artistic desires, ensuring the best result for the final printed
photograph. Keep in mind that the various edits can be saved in
multiple files for future viewing and comparison, all the while your RAW
data remains untouched and ready. How
is this possible? Remember, RAW file format is like a film negative,
only better, which contains raw pixel information that is obtained
directly from your camera’s sensor, and has not yet undergone film
processing. You cannot “print” RAW files, as they must be
first converted to a printable format such as JPG or TIF. Most
errors you might make when taking the picture can be corrected with just a
click of the mouse, such as changing the light settings, exposure values,
white balance, and more. With one RAW image, you can create multiple
“originals”, each so distinctive that it appears to be unique unto
itself. I wonder, would Da Vinci have appreciated the ability to try
different colors and lighting, at the click of a button, and then if not
satisfied, delete his masterpiece without worry of wasting hundreds of
hours of work? Whether
your images are JPG, TIF, or RAW file format, the important thing to
remember is that your image must be of sufficient size and quality to
ensure the best print possible. When creating an image for printing,
make sure your image resolution is set to no less than 250 DPI (dots per
inch). We often set our files at 300 DPI for optimal results.
If
someone else is taking the photos digitally, ask them to supply you with
the best possible image size in RAW or TIF file formats. If shooting
with a film camera, ask the photo lab to supply not only the negatives and
prints, but request the negatives be scanned in the highest resolution
possible and archived on DVD for future printing. It may cost
a little more, but is worth it in the long run.
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