Category » Geek Articles

Removing Fly from Lens

Geek Articles

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

By

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 […]

Canon 85mm f/1.4L IS MTF Testing

Geek Articles

Just MTF Charts: Canon Prime Lenses

By

This is the first post of a series of posts publishing all of our MTF results so that methodology is consistent, easy to find, and up-to-date. (For some of the older lenses there are graphs done with older software floating around. For a couple of lenses there are incorrect graphs done before we worked out all of the […]

Sony 135mm MTF Sharpest Lens Ever

Equipment

Sony FE 135mm f1.8 GM Early MTF Results

By

As is sometimes the case, I got access to a couple of pre-release copies of the new Sony FE 135mm f1.8 GM lens. Of course, if I get access, it gets MTF bench tested. I mounted the first one, sipped my coffee and then lost my mind and started shouting various expletives, enough to bring […]

Geek Articles

MTF Results for Recent Sigma Art Lenses

By

And you may find yourself in a shotgun shack. And you may find yourself in another part of the world. And you may find yourself behind the wheel of a large automobile. And you may find yourself in a beautiful house. And you may ask yourself, well, what should I shoot with? A number of people […]

C-4 Fisheye Lens

Geek Articles

Assembling the C-4 Optics 4.9mm f3.5 Hyperfisheye Prototype

By

You guys have watched us gut a lot of lenses and cameras over the years. So I thought it would be fun for you to see us put one together from scratch. Compared to many of the lenses we’ve taken apart, this is all mechanical lens is rather simple: no focus motors, image stabilizers, etc. […]

Follow on Feedly