rogercicala

This Widest-Ever 4.9mm Fisheye Lens Can See Behind Itself

LensRentals founder Roger Cicala is known for disassembling camera gear and sharing his findings on his company blog. Now he has done the opposite: he's sharing how he built (from scratch) a prototype 4.9mm f/3.5 "hyperfisheye" lens, the widest fisheye lens ever made. It's a lens so wide that it can literally see behind itself.

A Teardown of the Canon EOS R

Want to see the internals of Canon's first full-frame mirrorless camera? Roger Cicala over at LensRentals disassembled the new Canon EOS R to look at the design and engineering going on inside.

Teardown: Take a Peek Inside the Canon 5D Mark IV

Want to see the guts of the most anticipated DSLR of the year? You're in luck. Roger Cicala over at LensRentals took the time to tear down, piece-by-piece, a brand new Canon 5D Mark IV so you can take a look inside and ... just maybe ... learn something, too.

Canon 5DS and 5DS R Initial Resolution Tests

Like everybody else, we at LensRentals were pretty excited to get our hands on Canon's new 5DS and 5DS R. There are already a lot of hands-on articles about the cameras that probably have told you more than you need to know to make your purchase decision. Of course, for most of the Canon shooters who read this blog, the purchase decision was just which place you want to buy it from.

We Found a Fly Inside a Weather-Sealed Lens

I've been blogging about testing and taking apart camera equipment for almost a decade. My company, LensRentals, has many thousand of lenses these days, and they all get used frequently. When you have lots of lenses and they get used frequently, stuff gets inside them.

Just the Lenses: The Great 200mm Shootout

This 'Just the Lenses' article will take advantage of a Trioptics Imagemaster optical bench to compare lenses from different camera mounts with no camera involved. Why is that different? Because all other forms of testing (DxO, Imatest, or even photography) tests the camera-lens combination.

A Brief Comparison of Canon 400mm Lenses, Mark I Against Mark II

Canon shooters have a bit of 400mm excitement right now. The biggest news, of course, is the release of the 100-400mm f/4.5-5.6 IS II lens, replacing the original version that's had a very long, successful run.

Not quite so much excitement was generated by the release of the 400mm f/4 DO IS II lens. It too replaces a long running lens, but one that has been considered more of a niche lens. (I'll admit, though, it's been one of my favorite niches. I used the 400mm DO a lot over the years.)

Cracking Open the 7D Mark II, The Most Thoroughly Weather Sealed Camera I’ve Ever Seen

OK, I have to admit I really like the 7D Mark II. I didn’t want to because it wasn’t what I wanted. I wanted to see the new Canon chip foundry that would be cranking out high-resolution sensors. But despite wanting to hate the 22-megapixel APS-C camera, after a fairly short exposure to the autofocus system, I have to admit I like it. There’s just something about getting every shot in focus every time that’s appealing to me.