October 21, 2014, 08:49:49 AM

Author Topic: Another Interesting (or just Meaningless?) Comparison  (Read 640 times)

JumboShrimp

  • Rebel T5i
  • ****
  • Posts: 138
    • View Profile
Another Interesting (or just Meaningless?) Comparison
« on: April 15, 2014, 10:29:37 PM »
Being the proud new owner of the Canon 50/1.2L, and seeing all the hype regarding the new Zeiss Otus 55/1.4, I thought I would dig through my old issues of Popular Photography for a comparison of their respective "SQF" charts and other test data. Much to my pleasant surprise, it's seems to be a literal dead heat, at least from their efforts. (Both charts are attached below - Zeiss on the left, Canon on the right.) If nothing else, an interesting comparison from another source.

As an aside, I don't think I have ever run across a CR thread that mentions tests in Popular Photography magazine. Any reasons/opinions on this? Just curious ...

canon rumors FORUM

Another Interesting (or just Meaningless?) Comparison
« on: April 15, 2014, 10:29:37 PM »

neuroanatomist

  • CR GEEK
  • ********
  • Posts: 14710
    • View Profile
Re: Another Interesting (or just Meaningless?) Comparison
« Reply #1 on: April 15, 2014, 11:00:38 PM »
"Subjective Quality Factor," it sounds arbitrary, made up, and, well....subjective.

I know it's not, it's been around for 40 years and was first published by Kodak.  But still, I wish Ed Granger had come up with a different name.

For those who are curious, Bob Atkins discusses PopPhoto's use of SQF (although he misspells Granger's name).
EOS 1D X, EOS M, and lots of lenses
______________________________
Flickr | TDP Profile/Gear List

canon rumors FORUM

Re: Another Interesting (or just Meaningless?) Comparison
« Reply #1 on: April 15, 2014, 11:00:38 PM »