I have an M 28/2.8 (yes, I know, spare me the "but the 3.5 is much
better" comments, I've heard it already) that I picked up used a while
ago. Lately, I've been getting really overexposed shots when I use f16
or 22. The slides look up to 3 stops overexposed, and I'm not having
the problem wit
I was offered a 50mm A f/1.4 lens in mint condition, but I noticed that the
diaphragm closes slowly. It does not have any oil visible on it, which is
the usual cause of slow diaphragms, so I'm concerned that a simple cleaning
won't fix it, and it may have a more costly mechanical problem. Doe
On 4 Aug 2002 at 0:34, Peter Spiro wrote:
> I was offered a 50mm A f/1.4 lens in mint condition, but I noticed that the
> diaphragm closes slowly. It does not have any oil visible on it, which is the
> usual cause of slow diaphragms, so I'm concerned that a simple cleaning won't
> fix it, and it
Anton Browne e-mailed me off list with what seems like a very good
suggestion:
I had that problem once on a Pentax lens - the lens was tatty but optically
fine and I'd got it cheap, it was a common lens so I wasn't too bothered. I
set the lens to close focus so it was extended and carefully lubr
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