Category » Technical Discussions

Just MTF Charts

Just the MTF Charts: Micro 4/3 Lenses


Not a lot to say specifically about the m4/3 lenses except please don’t ask why your favorite isn’t on here; this is all I’ve got. Some of the newer m4/3 have linear electronic focusing which can’t be tested on the bench without a specialized, expensive mount and we don’t have one. Even for the ones […]


Just MTF Charts: Rokinon / Samyang Lenses


I’m going to add some qualifications to the Rokinon / Samyang MTF post. First, the results are a mixture of both brands (which are identical except for the label). Lensrentals stocks mostly Rokinon labeled because of better (the bar is low here) service in the U.S., so the website calls them Rokinon. Our software calls them Samyang because Samyang Optics […]

Sony 135mm MTF Sharpest Lens Ever


Sony FE 135mm f1.8 GM Early MTF Results


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 […]

How To's

Getting Started in Deep Space and Astrophotography


It is sometimes said that astrophotography is one of the most challenging types of photography out there. There are numerous technical problems to overcome, substantial initial investments, and a considerable chance of getting burnt out if you get too frustrated. Luckily enough people have attempted astrophotography to form a general idea about what the best […]

Image Stabilization How To What Is

Geek Articles

How Image Stabilization Works In Camera and In Lens


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, […]

Follow on Feedly