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Canon 85mm f/1.4L IS MTF Testing

Geek Articles

Just MTF Charts: Canon Prime Lenses

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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

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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

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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

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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. […]

Image Stabilization How To What Is

Geek Articles

How Image Stabilization Works In Camera and In Lens

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Image Stabilization comes in a variety of different names and types. Whether it’s called O.I.S. (Optical Image Stabilization), VC (Vibration Compensation), VR (Vibration Reduction), IBIS (In-Body Image Stabilization) or just IS (Image Stabilization), it all foundationally does the same thing – controls the effects of camera shake to produce sharper images. With the recent years, […]

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