In article <45981ca3$0$20024$> Phil Wheeler <wt6uh-> writes:
$Petaman wrote:
$> I recently ordered some 6x4 prints from Jessops' in-store digital photo
[...]
$> Therefore can you please advise me as to the best height to width ratio
You just cited the ratio above: 6x4 is a 3:2 ratio.
$Images are 4:3 (12:9) and prints are 3:2 (12:
Just to make this more general ... those numbers are true for the
original poster's specific camera and specific print size. In general,
most DSLRs are 3:2 (except for those using the four-thirds system) and
most other digital cameras are 4:3. Many digital cameras allow the
user to pick from a variety of image sizes, and while in the past the
sizes offered by a given camera are all in the same ratio, there are
some cameras now that allow the user to choose image sizes of *different*
ratios, such as 4:3, 3:2, or even 16:9 (the ratio of widescreen TV).
Check the manual for your camera to find out what it offers; if it
doesn't give you the ratio, a calculator will tell you.
4x6" is the most common standard print size in this part of the world;
I don't know if it is elsewhere. But other standard print sizes are
not necessarily in the same ratio: 4x6, 5x7, and 8x10 are all common
print sizes, and all have different ratios. So if you really like
that 4x6 and want it printed as an 8x10, you have to keep in mind that
it will end up cropped. (Some printers will do 8x12, which is the same
ratio as 4x6, and which solves that problem, but then you have to find
a frame for an 8x12, and that's not a standard frame size - 8x10 is.)
$ Best is to crop
$them yourself in a computer before having them
$printed. That way you will get what you expect.
Agreed.
One other thing to keep in mind is that even if you provide them
with a file that's exactly in the right ratio, you're still probably
going to lose some pixels off each side. Most printing machines do
this, for a couple of reasons. One is that there is some mechanical
slop within the machine; not everything is perfectly aligned. If
they printed your picture at exactly 4x6", chances are pretty good
that some of your pictures would end up with a bit of white space on
one side, or perhaps a sliver of the next/previous photo on one side.
So printing machines are typically designed to print the picture
slightly larger than it ought to be, on paper that's the right size,
leading to slight cropping.
The other is mostly historical: most film SLRs display slightly
less than 100% of the image in the viewfinder, and most non-SLRs
with optical viewfinders (e.g. rangefinders or point and shoots, and
that includes digital P&Ses which provide optical viewfinders)
have the potential for parallax. So what you saw through the viewfinder
is not precisely what ends up being captured when you take the picture;
some other stuff that you thought was outside the field of view may
actually be within the image. If the printer crops the edges off the
frame when printing, it reduces the chances of this being a problem.
--
Stephen M. Dunn <>
>>>----------------> http://www.stevedunn.ca/ <----------------<<<
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