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.
Nikon MTF Tests

Just MTF Charts

Just MTF Charts: Nikon Prime Lenses

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We’ll continue our just MTF chart series of posts with the Nikon brand prime lenses. For those of you who have been asking, The Digital Picture is going to add all our MTF graphs to their comparison tool as we release them. That will let you do logical comparisons like ‘is the Sony 135mm f/1.8 […]

Removing Fly from Lens

Geek Articles

Removing a Fly from ‘Weather Sealed’ Canon 70-200mm f/2.8L IS II

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I’ve been doing lens stuff for a long time now. Long time. Trust me; it’s hard to remain polite the 843,911th time some newbie goes into hysterics because there’s dust in their lens. Telling them it doesn’t matter a bit, and that all their other lenses have dust they just can’t see ( because different optics magnify […]

Sony MTF Tests

Just MTF Charts

Just MTF Charts: Sony FE Mount Prime Lenses

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This is the fourth post publishing all of our MTF results so that methodology is consistent and they are easy to find. The previous have been by lens brand. This one is by the mount, since the Zeiss Batis and Loxia lenses fit more naturally here than with the Zeiss SLR lenses. Otherwise, no comparisons, no commentary, just the […]

Sigma Art Series MTF Tests

Just MTF Charts

Just MTF Charts: Sigma Prime Lenses

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This is the third post publishing all of our MTF results so that methodology is consistent and they are easy to find. No comparisons, no commentary, just the test results for you to use and abuse as you see fit. We’ll continue today with the Sigma prime lenses. For those who wonder, the results presented are for EF (Canon) mount […]

Zeiss Lens MTF Charts

Just MTF Charts

Just MTF Charts: Zeiss SLR Lenses

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Please note: The Zeiss Batis and Loxia Lenses will be presented with the Sony FE mount prime lenses.  Over the last 5 or 6 years we’ve run more MTF tests than anyone in the world. We do a lot of stuff with those results, but the one thing that’s pertinent is we publish them on […]

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