All,
I am trying to dial in my 70-200 f2.8L IS II USM lens that I bought. I am not sure I am doing the right steps to get it razor sharp and may have some high expectations of lens/glass.
Here is my current workflow and details. Mark 5D III body.
I put the camera in P mode, I set to one shot and set spot focus on a point and do not move the camera/lens. I have lense at 200mm. I have done at 185mm as well. I change the ISO setting scrolling thru 100, 150, 200, 300, 400, 600 and take a photo. About 20 yards away (currently indoors overcast), I have a few tape measures set up and focus directly on the center one (one to left and one to right). I also do with IS on and off.
I then look at photo in RAW on computer and zoom in 500% to see how sharp the picture is...
Questions:
Is 500% too much to grade quality of image/details? If so, what should I be doing?
Any other suggestions? Thanks!
I bought the lens used and just tryting to determine if it is functionally correctly with the correct details/razor sharpness.
