I have been working with the Edge 80, the Sweet 35, and the Double Glass optic lately, and except for the Edge 80, which does its blur differently when tilted, I find that the Sweet 35 is sharper at larger opening F-stops than the double glass. It is my experience that the sweet 35 at F2.5 is much sharper and larger in the sweet spot than the D/G at F2.8.
Obviously the S/G optic and the plastic optic need a much higher F-stop to give a sharper sweet spot than the D/G optic does at a F-2.8.
Am I doing something wrong to get these results? I have checked my viewfinder diopter regularly and this does not appear to be a factor. Since I must shoot in Manual Mode I focus carefully where the sweet spot is placed, I have even used the Scout in order to keep the sweet spot centered eliminating the variables the composer pro may cause.
I am not complaining about the results since I can choose the optic for the shot as needed knowing that there are differences. I just was concerned I was seeing what others have noticed between these optics.
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