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.
Sigma 24-70mm Art Series Review

Lenses and Optics

Sigma 24-70mm f/2.8 DG OS HSM Art Sharpness Tests

By

Sigma has been on an incredible run these last 5 years, releasing one amazingly sharp lens after another. They’ve made lenses no one has ever tried before and not only succeeded, they made them amazingly good on the first try. Their quality control has become as good as anyone’s, better than most. And their repair […]

Sigma 14mm MTF Tests

Equipment

Sharpness Tests of the Sigma 14mm f/1.8 DG HSM Art

By

We’ve had a number of fun, new lenses to test this summer and one I was pretty eager to get to was the Sigma 14mm f/1.8 Art, for a couple of reasons. First of all, it’s a 14mm lens that has a wider aperture than f/2.8, and that’s certainly interesting. Second, it’s a new Sigma […]

Ultra High Resolution

Geek Articles

Experiments For Ultra High Resolution Camera Sensors

By

GEEK ALERT!! Let’s be absolutely clear; this is not a useful article in regards to your technique. It won’t help your photography or videography become better. It won’t help you choose equipment any time in the next couple of years. It won’t provide any fodder for your next Forum War. It’s just a geek article that may interest […]

Sony 85mm MTF Testing

Equipment

Sharpness Tests of the Sony FE 85mm f/1.8

By

Sony released the Sony FE 85mm f/1.8  lens a while ago, and while it’s the kind of lens I generally love, we just now got enough time freed up to test it and present the results. As with most brands, and 85mm f/1.8 lens gives a lot of the advantages of a fast prime while […]

New Items

Sony FE 12-24mm f/4 G MTF Tests

By

I usually don’t do any prerelease testing. Mostly that’s because manufacturers will send one prerelease copy to a reviewer. If you tell them you won’t test less than ten copies they look at you like, well, I don’t know what they look at you like because I only communicate by email. But they say nope; you […]

Follow on Feedly