Lenstip posted their review of Sigma 40mm art.
https://www.lenstip.com/index.php?test=obiektywu&test_ob=548
https://www.lenstip.com/index.php?test=obiektywu&test_ob=548
Thank you for posting. Another very impressive lens from Sigma. I wonder how concerned I should be about the spherical aberration.
Thank you for posting. Another very impressive lens from Sigma. I wonder how concerned I should be about the spherical aberration.
Depends exactly on the quantity of focus shift as far as AF is concerned. I don't think that this is something the review covers and it's up to your own way of shooting as well.
On the other hand a degree of spherical aberration can be seen as a very good thing for background blur transitions and bokeh quality, so reviews should perhaps stop mentioning it as a defect, but rather as a design choice to be made aware of.
An interesting perspective - but spherical aberration reduces sharpness at the same time. And yet this lens is very sharp. So perhaps the degree of spherical aberration is slight? This is confusing.