Author » Roger Cicala

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.
Disassembly of the Sony 400mm f/2.8

Geek Articles

The Great 400mm Teardown Comparison. Part II – The Sony 400mm f2.8 G

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In which you will not only learn how good the construction of Sony’s new flagship is, but also everything you wanted to know about Kubu.  As I mentioned last week, we usually don’t write up super-telephoto teardowns, but the release of two remarkably lightweight 400mm f/2.8 lenses seemed like a great opportunity to do a comparison. […]

Disassembly of the Canon RF 50mm f/1.2L

Geek Articles

Disassembly of the Canon RF 50mm f1.2L

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It is the best of lenses, it is the worst of lenses, it is the lens of perfection, it is the lens of complexity, it is the lens of new technology, it may be the lens of non-repairability.  A little while ago, Canon released the computer generated MTF charts for the Canon RF 50mm f/1.2 lens. Despite my ambivalence about […]

Lens Testing For Sharpness

Geek Articles

Using Rapid MTF Testing – How We Test & Monitor Our Lenses

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WARNING! THIS IS A GEEK LEVEL III ARTICLE.  It’s about testing, not image making. If you’re into geeky testing stuff, you’ll probably find this fascinating. If you’re not into geeky stuff but are into how lenses change over time, you’ll find skimming it worthwhile. If you’re a Fanboy or Fangirl, there’s nothing here for you; there are […]

Equipment

Teardown of the Nikon Z7 Mirrorless Camera

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We published our teardown of the Canon EOS-R and then had to decide which of the Nikon Z cameras to do. We decided to go with the top-end Nikon Z7. The Nikon Z6 would be the more appropriate comparison from a price standpoint; the Nikon Z6 is retailing for $2145, the Canon EOS-R for $2299, […]

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