Resolution Tests
Last week we posted an introductory article on how we measure copy-to-copy variation in different lenses. I’ll be continuing to publish these results over the next few weeks for prime lenses. We will eventually have a database put up, but I think it’s important to look at the different lenses in smaller groups, illustrating some […]
Lenses and Optics
A while back we ran Imatest resolution numbers on a few copies of the Canon 24-70 Mk II. That was right at release time and the resolution was most impressive, but we only had 5 copies available to test. Over the next couple of months a number of reviews came out. Most seemed to consider […]
Geek Articles
Sometimes, people are talking about in-camera JPEGs, and it is possible to have a moderately fruitful discussion. How fruitful it might be depends on the definition of better. If better means more accurate, careful image analysis can yield objective insights. If better means, “what I like”, a meeting of the minds is far less likely.
Equipment
Tamron has a nice set of three f/2.8 zooms for Sony E mount cameras. Today I’m putting out MTF results for the 17-28mm f/2.8 Di III RXD and the 28-75mm f/2.8 Di III RXD. They offer a reasonably priced alternative to Sony-branded lenses, and Tamron has been making good products lately. I’ll admit to a […]
Geek Articles
We’ve done a pretty good introduction to the field curvatures of 24mm, 35mm, 50mm, and 85mm prime lenses. We made a little bit of comparison with bargain primes and zoom lenses at 35mm. This post is going to assume you are familiar with those previous posts. (Yes, I know the reality is most people read […]
