What I am saying is that acutance measured using a two-dimensional test chart parallel to the camera's sensor tells you nothing about bokeh. Absolutely nothing.
All lens design is compromise. The flat field correction needed to make a flat test chart look sharper on the edges very often makes out of focus objects harsher and busier than designs that are not made for potential buyers who are obsessed with how well a lens reproduces flat test charts above all else.
I'm sorry I still do not get it. This is general knowledge. How is this an answer to my statement?
I'm saying for the third time, the Sigma 135/1.8 is superior to the Canon 135//2 in basically every way.
There could be hundreds of valid answers, like
- You prefer the Canon because it weighs less and the way you shoot it's more important than other aspects.
- You love how it fits to your other 72mm filter lenses and you are using many filters and the Sigma's 82mm would have been a pain.
You could even have a ton of arguments which are BS but still valid as reply like
- You think the Canon is actually sharper.
- You think the Canon has nicer bokeh.
- You think Canon has faster AF
But the thing is you are not saying anything. You are pretending to lecture, while implying that my opinion is invalid due to my lack of knowledge. But you don't have the balls to actually say the Canon is sharper or faster or whatever, because it's BS.
You are also implying that my opinion is based on test charts and the fact that test charts are not telling you the 100% truth about IQ somehow invalidates my whole statement. Both are BS.
The two lenses are so much worlds apart (not surprisingly as they have 20y! difference), you don't need test charts to know.
Sigma performing way better on a test chart is like 10% of the story.
Btw regarding test charts, you are all over the place.
First of all, test charts and bokeh? What? Of course they don't tell you anything about bokeh. Since when was the purpose of charts about bokeh? It's about sharpness, contrast, resolution, color rendering.
Do test charts tell you 100% everything about a lens? No.
Are they still useful and give you a lot of info? Yes.
Does this have anything to do with the original topic? No.
Please say you had both lenses and for this and this reason you prefer the Canon. Or say that you never touched/shot the Sigma but you just love the Canon for whatever reason. Or have the balls and say the Canon is sharper than the Sigma, I don't care how much it's a bs.
Just say something that that actually reflects on the topic or my post.