Beercan - Diagnose problem #2

Started Nov 20, 2012 | Discussions thread
stan_pustylnik Veteran Member • Posts: 3,940

sensibill wrote:

Pretty sure I didn't buy OP's lens. I got this from an older gentleman near where I live, who had it with a bunch of Minolta film stuff, a 7000 body and lenses.

take a look through your lens with opened diaphragm, make sure you don't see web-like mesh.

Once I bought Sigma 400mm f/5.6 APO prime lens that looked perfect outside. External optical elements were perfect too. However IQ was poor - showing very strong CA/PF artifacts.

Upon closer inspection internal lens element turned out to be affected by fungus.

here how it looked:

-- hide signature --

Person is taking photos, not camera. When photograph is bad, it's because photographer doesn't know how to choose settings optimal to "own preferences". Then blames camera for bad IQ.
This is same as blaming car about arriving to wrong destination.

 stan_pustylnik's gear list:stan_pustylnik's gear list
Panasonic Lumix DMC-TS2 Sony Alpha DSLR-A850 Sony SLT-A55 Sony DT 18-55mm F3.5-5.6 SAM Sony 50mm F1.4 +11 more
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