On Tue, 21 Jul 1998, John Petrush wrote:
|The resolution of 35mm lenses, as measured in line pairs per millimetre, is
|generally greater than their larger format counterparts for the same angle
|of coverage. As stated, the gain in photo sharpness is due to the fact that
|the larger film size requires far less enlargement to get the same print
|size. I read an interesting article a while back about resolution. Look at
|http://members.aol.com/daveswager/resolut.htm
|(I can't believe I actually *found* it) A facinating discussion and well
|worth the read.
Thanks, John. It IS a fascinating read and concurs with what I have
heard from some serious photographers before. I borrowed the John B.
Williams book, "Image Clarity" (referenced in the web site provided
above), several times from my university's library and employ his
technique of 'stressing the tripod' to maximize rigidity and sharpness
with my little Cullman Magic 2 (where I dumped the dinky ballhead
for a much larger one years ago). Many people can't believe the
quality they can derive from 35mm equipment when perfectionistic
techniques are employed.
|Winsor Crosby <wincros@xxxxxxx> wrote:
|
|
|>Something that I have been curious about for sometime is the resolution of
|>larger format lenses. A number of list users have admitted to the use of
|>non-Oly cameras, but only because Oly does not make equipment in the larger
|>formats. I understand. ;-)
|>
|>I have never seen lens resolution tests for medium or large format lenses.
|>Are they published? If so what kind of resolution would one expect from a
|>pretty good lens. I would suspect that it would be substantially lower than
|>a lens for an OM or one of its competitors, if for no other reason than the
|>greater distance of lens from the film plane. Admittedly, it is less
|>significant with a larger piece of film that does not have to be enlarged
|>as much.
|>
|>I suppose that if a Zeiss lens on a Hasselblad could resolve half the
|>number of lines per mm at the film plane as an Zuiko lens on an OM, you
|>would see a net improvement in the resolution in the final photograph,
|>aside from improvements in texture, gradation and finer grain.
|>
|>Is there something in the relative size of the lenses and the amount of
|>film they are trying to cover that makes larger lenses, smaller lenses more
|>difficult to build with great precision, or is that even a factor in
|>today's technology.
|>
|>I did see a fairly large collection of industrial photos in black and white
|>enlarged to 8 1/2 inches by 10 inches made with a Hasselblad and a Leica. I
|>could not tell which camera took which photo.
|>
|>Any enlightenment?
|
|
|
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