Lenses and Optics
We’ll continue our Just the Lenses posts with the 85mm wide-aperture prime lenses. We’ll get through all of the wide aperture primes eventually, for those of you who like this series. If you haven’t read the previous posts, then you might want to go back and skim the introduction of the previous one to see the […]
Lenses and Optics
Ignorance more frequently begets confidence than does knowledge. Charles Darwin What I know that I don’t know doesn’t cause me much trouble. I don’t know the formulas for 7th order optical aberrations for example. I don’t know enough math to calculate those formulas even if I did memorize them. But I’ve got shelves of books […]
Other
We spend a lot of time here at Lensrentals getting dust out of lenses. Dust doesn’t affect an image, except in very rare circumstances, but people want their rental lenses to look nice and clean inside and out, and our inspectors check the inside of every lens with spotlights and send any dusty ones over to the […]
Lenses and Optics
As I discussed in the last post, it’s impossible to accurately compare lenses from different mounts using any form of computerized target analysis testing (methods like DxO or Imatest). Target analysis tests an entire system (camera and lens). That’s a very practical thing, of course, but it has some limitations. Directly comparing the lenses on […]
Lenses and Optics
It’s impossible to accurately compare lenses from different mounts using any form of Computerized Target Analysis testing (methods like DxO or Imatest). Target analysis tests an entire system (camera and lens). People try to, of course, but it’s not accurate since you always have the added variables of camera sensor, microlenses, in-camera image processing, etc. […]
