BetterPhoto Q&A
Category: New Questions

Photography Question 

BetterPhoto Member
 

Is the Lens Bad?


I have a Sakar 35 - 140 (Canon FD mount) lens that I think has a problem. I notice that the diaphram is slow/sluggish to close. This can be seen two ways: First mounted on the camera with no film, back open and shutter set to bulb and F stop set manually. When the shutter button is depressed the diaphram can be seen closing sluggishly from full open to the selected F stop setting. Like it was damped. The same can be seen with the lens off the camera operating the diaphram lever manually. I would think this closure would have to happen as fast or faster than the fastest shutter speed?

Is the lens bad?


To love this question, log in above
May 21, 2002

 
Log in to respond or ask your own question.