I have a 135mm f1.8 lens and a 400 f2.8 Lens.
While the 400 f2.8 has "perfect" mtf charts and the 135mm f1.8 does not, the 135mm f1.8 shows way more sharpness in a field test.
Im talking about the sony lenses here. I tested this with the 61mp a7r iv.
I shot a testsubject and framed it the same with both lenses, meaning i had to walk further away with the 400mm lens.
Tests were shot with a tripod and a remote shutter. The results also align with my experience with these lesnes from months of use.
How can this be? Shouldnt the 400mm f2.8 be clearly sharper according to the MTF charts?
While the 400 f2.8 has "perfect" mtf charts and the 135mm f1.8 does not, the 135mm f1.8 shows way more sharpness in a field test.
Im talking about the sony lenses here. I tested this with the 61mp a7r iv.
I shot a testsubject and framed it the same with both lenses, meaning i had to walk further away with the 400mm lens.
Tests were shot with a tripod and a remote shutter. The results also align with my experience with these lesnes from months of use.
How can this be? Shouldnt the 400mm f2.8 be clearly sharper according to the MTF charts?