Photoclubalpha

David,

If you do an AF accuracy test in tungstun light then please report the results, would set my mind at ease and can stop thinking about different brands.

I saw you have got a 28-85, how does it behave on the A900, especially in the corners?

Thx

Peter

David, In which light did you do your testing? Normal daylight, tungstun, fluorescent or ......? Do you see any difference in focus accuracy when you compare focus accuracy in tungstun light and normal daylight? My experience is that tungstun is the most critical for focus errors. (at least with the...

I have tried my 17-35D on A900 in a shop lighted by a mix of tungstun and fluorescent lighting. In this condition I had to adjust the AF micro adjust to -7 to solve the backfocus in the 17 MM range. When using a wide angle setting the AF adjustment to -20 has a huge effect on the focussed distance i...

I have heard that some Canon cameras also show this AF behaviour, so I tried some of their cams. Last day I have been playing around in a shop called Media Markt in the Netherlands, they have several DSLR's cameras of different brands lined up to try. All cameras were equiped with lenses and powered...

After several years of struggling with focussing with wide angle lenses I found out that my Minolta/KonicaMinolta camera's are backfocussing in artificial (ie tungstun) lighting conditions with wide angle lenses wider than 24 mm. In normal lighting everything is ok. Every time I switch on a lamp the...