Hi,
I quite like this lens for use on DSLR (~43mm equivalent, which is
my liked focal length between 35 and 50), and recently, I found a
very cheap one. Unfortunately, it has hazing in the inside. No
fungus, just hazing and a fingermark. Otherwise, the resolution and
other characteristics are very good. Obviously, in backlight, there
is veilingh glare all over it.
As I have some experience with cleaning lenses, but only older
non-AF ones, I wanted to ask here for some directions.
The haziness is in the central part where diaphragm is located.
AFAIK, this lens is simple helical focusing, no fancy cams for
inner focusing or similar. With most MF lenses, it would be easy
to separate the optical groups and reach there without too much
disassembly. However, I am not proficient with later AF lenses. The
mechanical assembly can be anything from easy to very hard to
clean.
Anybody please knows about this specific lens, and how to get
inside? I don't want to experiment before trying to get information
first.
All that's needed is to take the rear optical group out, open the
diaphragm and clean the rear element of the front optical group.
Thanks
Good light!
fra
