focus test chart be more accurate? Or is such a fine level of AF mis-focusing in-significant for most usage?
My 3 Canon lenses auto-focus spot on, but the sigma back-focuses by 2mm. I'm still not all that used to such a thin DoF, so I don't know if it makes a difference in practice.
Just bought a new tripod, Benro A300.
It costs me 140 dollars. Quite steady and nice build quality also.
450D/17-50 F2.8 HSM OS/50 F1.8/430EXII/85 F1.8/BenroA300EX/55-250 IS/ 35mm F2
if the batt test is done properly, one surely can tell how bad is the issue, if any. then u can make a call to go ahead or abandon the deal. if u have no choice (say u found a lens at an attractive price), u can always get lens calibrated, be it at CSC (for canon lenses) or David (from P&G - for 3rd party lenses).
whether the f/b focus is significant, i would say it is in my line of work. a 2mm f/b focus is not good if one can observe it. this will be even worst if shooting at the minimum focusing distance, where the error is magnified (f/b focus is visually more pronounce). imagine if using a lens with front focus, u focus at her eye, but the other eyes below are in focus (if u know what i referring to.. , xhui excuse me hor ...), how would u be able to deliver the final photos?
haha my v2 of my macro ring light come out liao help post sum suggestion on my thread pls..
Piangz... Today I kena poison by Raynox 250 DCR after joining tagorean and ex0rcist in the CCK macro outing!
It's a perfect match for any lens, especially when you have a macro lens to let it stack on. The picture closes up by another +8 diopter but the downside is the thin DOF.
Now will go have to hunt for 2nd hand liao...
Any guides on getting a mac? Could use some guidence. Haha, Though i've read up on switching from PC to Mac, but still any advise? Going to BBB soon. Haha.