Upload & Sell: Off
| p.1 #15 · Sigma 35mm F1.4 - A 2nd Opinion |
Micheal, thanks for the tip on that. I eyeball tested mine to +2, now I'm interested to setup FoCal and see what it says. BTW, +2 makes a big difference in sharpness over 0. I was suprised and pleased as my experience with Canon AF fine tuning has been, errrhm, FRUSTRATING (!!) to say the least due to focus inconsistency.
Never having shot Canon or Nikon digitals, this is all new to me. FoCal is fairly new to me too although I spent a rainy day working with it and think I have it dialed in. I even took the stock target and scaled it up, printed large, so I could retest with the camera set farther back. Doing so seemed to change the most consistent tune value from -4 to -6, and as -6 has been showing up in the autotune reports and AF consistency test as quite reliable focus-wise, I've gone to that.
When I eyeballed focus tuning, I had mine set to +5. Don't ask!
The AF consistency test might be more useful than the tuning test itself - assuming FoCal is accurately reporting on the situation (and it seems to be as I have also been reviewing the captured images) there are always one or two AF tune settings which have demonstrably more consistent results. These settings often don't match up with the absolute highest focus quality value - I just made a judgement call to decide which points at both extremes should be considered as outliers. Tightly clustered results all close to max focus as measured by FoCal got the nod.
This all said I've not done a lot of real world shooting since I did all this testing but the early results look good.