johnf3f said:I have tried all my 9 Canon AF lenses (ranging from 17 to 800mm) and ended up with micro adjustment at or very near 0 on my1D4, they also focus just fine on my other EOS cameras (5Dc, EOS3, EOS 33V and EOS 50E) am I just lucky?
I am not questioning that micro AF adjustment is not a great confidence builder, just saying that I have not found a use for it - except for confidence building!
privatebydesign said:I am sorry I don't get the point of your post. It seems images one and three are horrifically over sharpened and image two doesn't appear to have anything sharp in it at all. Are these before and after micro AF? Why so much sharpening?
takesome1 said:johnf3f said:I have tried all my 9 Canon AF lenses (ranging from 17 to 800mm) and ended up with micro adjustment at or very near 0 on my1D4, they also focus just fine on my other EOS cameras (5Dc, EOS3, EOS 33V and EOS 50E) am I just lucky?
I am not questioning that micro AF adjustment is not a great confidence builder, just saying that I have not found a use for it - except for confidence building!
If you were using a yard stick and duck tape like the OP then yes you are lucky.
My super telephotos on my 1D IV were dead on. The only ones I had problems with were the zooms. With my experience with 7D's, 5D's and 1D models I think Canon takes more time in getting the 1D bodies and the expensive lenses right.
Lichtgestalt said:sorry but what is this ugly structure?
sharpening artifacts? but then... there should be ugly halos also?
neuroanatomist said:Lichtgestalt said:sorry but what is this ugly structure?
sharpening artifacts? but then... there should be ugly halos also?
I assumed some sort of noise reduction. Whatever the cause, I really don't care for it.
johnf3f said:I wasn't using a yardstick I was using AF targets angled at 45 degrees to asses where the lens was focusing. I must admit that I haven't tried out my Canon 800mm F5.6 as the depth of field at 6 or 7 meters is so shallow, wide open, that any error would be immediately apparent as the depth of field is almost zero! I simply tried it on some, very co-operative, Kingfishers - eye in focus + very little else so it must be spot on (according to DOF Master it is only 1 to 2mm at these ranges and aperture). My previous long lens (a 600 F4 L IS Mk1) was also spot on on test targets.
Sporgon said:I thought it was inaccurate to have a target at 45* and it should always be a perpendicular, flat target, otherwise you can't be sure where the AF is picking up on the 'slope'.
takesome1 said:johnf3f said:I have tried all my 9 Canon AF lenses (ranging from 17 to 800mm) and ended up with micro adjustment at or very near 0 on my1D4, they also focus just fine on my other EOS cameras (5Dc, EOS3, EOS 33V and EOS 50E) am I just lucky?
I am not questioning that micro AF adjustment is not a great confidence builder, just saying that I have not found a use for it - except for confidence building!
If you were using a yard stick and duck tape like the OP then yes you are lucky.