ProfHankD

Ubuntu isn't particularly friendly to cross compilers, so that's not necessarily Samsung's fault. Sony's Linux source has a lot of mods too, but many of them are things like drivers for devices...

Basically, yes. However, the effect is often not subtle. The center can be significantly better and the corners dramatically worse. The presumably better correction of the Speed Booster over Lens...

I eagerly read DPReview's posting about Samsung's posting of camera firmware: http://www.dpreview.com/news/2013/05/28/Samsung-releases-source-code-for-NX300-NX2000-mirrorless-cameras and I...

Perhaps the biggest benefit is that you have the in-the-field choice of using the central APS-C crop at 24MP or effectively 24MP FF.  To be able to get a 24MP APS-C crop from a full frame camera,...

Focus peaking works great -- and perhaps better with the SB near the center of the frame due to the effective increase in center resolution using the SB. Note that the "Speed Boost" is essentially...

It sounds promising, although I was hoping for a detailed first-hand account... but I've ordered one of the FD Lens Turbo. I'll post test results and details after I get the adapter, including...

I borrowed the SB from my neighbors here at the University of Kentucky Visualization Center, but I should have my FD Lens Turbo in a couple of weeks, and will do actual side-by-side tests...

Ok, I've finally gotten my hands on an EF Speed Booster to try with M42 lenses. I have just ordered a Lens Turbo FD, and will do formal tests on both with M42 lenses when I have both to compare....

It's easy to tell from the photos of the rear; see http://rick_oleson.tripod.com/index-99.html Aside from that, I've noticed that many K lenses say Pentax on them, whereas the M42 ones say things...

Expect it to be slightly better optically than the average fast 50, nearly all of which are quite good. Corners are a tad soft wide open. It gives Minolta colors, and yields decent bokeh. The...

I still haven't gotten an answer from any of the vendors I've asked and the product photos clearly show two dots (suggesting a control ring), but do not show any obvious pin (or wing, in the case...

So FD/FDn lenses can only be used wide open on the Lens Turbo? FAIL!!!!! Ok, my 55mm f/1.2 FL would still work, because it has an a/m switch on the lens, but FD/FDn lenses don't. I've built some...

Although I'm sure the Speed Booster is a superior product, it doesn't come in the right mounts to support about 2/3 of my 125+ lenses -- would work with my M42 lenses, but not my Sony A, Minolta...

No, there's no cost advantage to that over getting one with an EVF built-in. That said, you definitely want an EVF.  The issue is that without SSS, bracing the camera against your face makes a huge...

Your skill as a photographer trumps the bulk of your camera. However, you really should have something with an EVF for many circumstances and the sub-$20 magnified viewers that clip onto the rear...

If it isn't yet, it will be -- because both companies and a growing research community are working on making it so.  ;-)  I'm best known for my work in making supercomputing cheap (I built the...

Thorium-doped lens elements (up to 25% Thorium or more) can have sufficient quantities of daughter products ("impurities") so that it isn't just the Alphas coming directly from Thorium-232 decay....

It's not a coating, but a major component of the glass itself. Also, it is worth noting that it isn't just Thorium (and its often hotter daughters) in some old military optics, but any of various...

GIMP actually is more "powerful" than Photoshop, but it is 8-bit/color channel before 3.0 and the user interfaces on some plugins feel like research prototypes (often, because they actually...

A lot of folks use 3D printing for camera parts. In fact, my MakerGear M2 is primarily for building custom camera parts, and I own & use over 100 non-native-mount lenses. I can't believe anyone...