I have seen a few examples of constant aperture zooms (eg a 28-100mm f/4 Ricoh.) in the secondhand markets where the aperture appears to be not fully open (visibly non-round hole) at some zoom settings. Did some designs actually do that intentionally to enforce the constant aperture, or are these just cases of mechanical defects where unrelated mechanical parts interfere with each other due to friction or bad justage?
Subscribe to:
Post Comments (Atom)
-
Normally I use lens-hoods on every of my glasses (flairlight blocker, lens protection). Some days ago a bought the Canon EF 40mm STM (Panca...
-
I know that a real gray card is the best thing to use to determine exposure. But I'd like to know if there are other naturally available...
-
I got lost finding the right remote shutter release for my Canon 5D Mark iii. I have the Hänhel Combi for Canon, which I use to use with Ca...
-
A wide angle lens has a wide angle of view, therefore it would make sense that the front of the lens would also be wide. A telephoto lens ha...
No comments:
Post a Comment