Fungus has won again. Drat.
Sorry that my first picture sharing effort to revive this forum is of fungus, haha. Third time my Beercan has contracted it.
First time, I bought the lens as-is, and upon taking it apart (Thanks P. Ganzel!) I found both oily blades and fungus. I cleaned both and slapped it back together. After fine-tuning, this was/is a great copy. Very little PF/CA/etc. and tack sharp at f/4.
Second time, fungus came back. This time I ultrasonically cleaned every bit that I could. I also wiped every surface I could with disinfectant, re-greased and done. That was 4 years ago.
Now, I just so happened to be shooting in the sun and was about to swap for it when I saw it. My eye caught the perfect angle and here it is again.
I give up. A professional cleaning could be up to the cost of a new one, perhaps more since it appears that the fungus may be inside the sealed elements. Taking it apart and re-calibrating it is an all day job.
I guess I will shoot it 'til it dies. It is spending a week getting a sun tan and then it's the last hurrah.
p.s. - Yes, it's separate from the my other lenses. No, *so far* no other lenses exhibit even a trace of fungus. Yes, there were silica packs in my bag and my cabinet.
Just a Maxxum, an Alpha, and crossed fingers.
- Canon EOS M58.8%
- Panasonic G85/G803.3%
- Panasonic FZ2500/FZ20001.9%
- Panasonic LX10/LX151.2%
- Panasonic GH5 development3.6%
- Sony a99 II15.9%
- Nikon KeyMission 170 and 801.0%
- Fujifilm GFX 50S development28.3%
- Olympus E-M1 II development18.7%
- Olympus E-PL80.1%
- Olympus 25mm F1.2 Pro1.5%
- Olympus 12-100mm F4 IS Pro1.9%
- Olympus 30mm F3.5 Macro0.1%
- Sigma 85mm F1.4 Art3.6%
- Sigma 12-24mm F4 Art2.6%
- Sigma 500mm F4 DG OS HSM Sport2.4%
- YI M12.2%
- GoPro Hero50.8%
- GoPro Karma drone2.2%
|Sunflower Field by GrannyMeg|
from An impressionist piece
|Flag from Staten Island Ferry by wam7|
|SAND SCULPTURE by duskman|
from Landscape - Black and White #4