01-23-2018, 06:27 PM
Well, it's good to know both flaws (DSLR and mirrorless ones) from the inside. I think, if I had such a problem with a Sigma lens, the dealer/importer would fix it in less than a week - Sigma CH is really quick. I know, that's not helping you.
is there some kind of analogy between D500 and D750? Like "if one is +5, the other will be -3"? I found that always strange, of course D850 and D810 have different AFMA on the same lens, but on another lens the difference between both AFMA values is not the same.
Now, knowing your DIY skills, the next thing will be you become Mr. Sigma and get the lens back on track? Is there something mechanical one could do? I really don't know, but I guess, not all is firmware based, some things could also be adjusted by hardware?
is there some kind of analogy between D500 and D750? Like "if one is +5, the other will be -3"? I found that always strange, of course D850 and D810 have different AFMA on the same lens, but on another lens the difference between both AFMA values is not the same.
Now, knowing your DIY skills, the next thing will be you become Mr. Sigma and get the lens back on track? Is there something mechanical one could do? I really don't know, but I guess, not all is firmware based, some things could also be adjusted by hardware?