Author Lensrentals Repair Data: January - July 2012 | Lensrentals Blog

I'm Roger and I am the founder of Lensrentals.com. Hailed as one of the optic nerds here, I enjoy shooting collimated light through 30X microscope objectives in my spare time. When I do take real pictures I like using something different: a Medium format, or Pentax K1, or a Sony RX1R.

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Lensrentals Repair Data: January – July 2012

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    What Is This? We have a unique opportunity: We own a very large number of lenses subjected to rather harsh conditions. They get tossed around during shipping, and sometimes the user isn’t as careful with them as you would be with your own lenses. Basically, we have a laboratory set up to stress […]

Technical Discussions

Autofocus Reality Part 4: Nikon Full Frame

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I started this series to simply demonstrate a well-known fact; that contrast detection autofocus in Live View was more accurate than standard Phase Detection autofocus for still subjects. It ended up being a bit more than I’d bargained for just with the Canon cameras. After that series was done, I promised several people that I […]

Teardowns and Disassembly

A Peek Inside the Canon 24-70 f/2.8 Mk II

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You probably know we got 5 copies of the Canon 24-70 f/2.8 II today and did some resolution testing before they all shipped out. If you read this blog often, you probably know that Aaron and I gave every lens a careful shake, peered inside, and generally looked for any possible excuse to open one […]

Resolution Tests

Canon 24-70mm f/2.8 II Resolution Tests

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Here it is, only 6 months after announcement! The Canon 24-70mm f/2.8L II has finally arrived. I’d love to say something like: “Never have so many forums contained so many threads containing such strong opinions from people who’ve never touched a lens.” But that would be silly. It happens just about every time a new […]

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