"Dr. John" schrieb:
>
> I recently upgraded my 35mm equipment to EOS cameras and lenses,
> including an Elan IIe and Elan 7e bodies. I also have a 28-105 II USM,
> a 28-200 USM, 75-300 III USM, and a 22-55 USM. The quality in my photos
> even in 4 X 6 size is just not there. Since changing to the EOS system,
> my photos are not sharp and appear to be of low contrast with all of the
> above mentioned lenses. This is happening at all focal lengths,
> especially at the wide angle settings. I've taken all these photos at
> relatively fast shutter speeds (faster than 1/125 sec) and small
> apertures (5.8 or 8 or smaller). I've tried different film (usually ISO
> 200 or 100) and processing to no avail.
>
> I am beginning to think that acceptable quality is just not possible
> with AF lenses. The photos from my canon Megazoom 76 are actually much
> sharper! Any comments or ideas as to what is happening? Thanks!
>
At least the 28-105 should deliver acceptable quality (of course I don't
know what exactly "acceptable" means for you) if you avoid the extreme
tele end and stop down a little. All of those lenses should be able to
produce sharpness that is more than good enough for a sharp 4x6 print,
though. Contrast is another story and especially the xx-300 consumer
zooms, which includes your 75-300, are known for low contrast at the
long end. Making a contrasty 300mm lens cries for special glass, which
will make the lens an 'L' and expensive at the same time :-(
I don't know the Megazoom 76. But if it is a zoom P&S with big zoom
range as its name seems to imply, I can't imagine it would deliver
"much sharper" images than any of the above lenses. Mind you, 1/125
second is not a fast shutter speed when you're using those long lenses.
Camera shake is easy to obtain at 1/125 even with a 100mm focal length
when your shooting technique isn't very good. As someone else suggested.
Take a test roll or two with slide film and a sturdy tripod, if possible
with a remote release to eliminate camera shake.
Not only acceptable quality, but real outstanding quality can be obtained
with AF lenses. If you're looking for affordable lenses with excellent
performance, it might be a good idea to look for prime lenses. 28/2.8,
35/2, 50/1.8, 85/1.8 are all excellent performers at a quite affordable
price (especially the 50 is quite cheap). f you ned longer lenses, I'd
recommend a 200/2.8 L or 300/4 L. There is no lens in the lineup that
is excellent at 200 and above and isn't an L lens at the same time.
Just MHO, of course ;-)
Thomas Bantel
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