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Today I made a few quick comparison shots using the 70-200 GM without and with extenders 1.4x and 2.0x. Shots upsized in Photoshop. All shots at 200 mm. On the left original, center is 1.4x and right is 2.0x. Done at f 2.8, f 4 and f 5.6 and corresponding extensions. Camera a7RII. These are 3x magnified Screenshots in Photoshop. Resolution is clearly improving with converters. The effect is a little more pronounced than these screenshots show. Maybe there is a little change in color signature. f 2.8: f 4.0: f 5.6:

I compared the angle of view of my SONY HX-50 to my a6000 using my Nikon 300 legacy with Metabones adapter plus Nikon 1.4x extender. I expected the HX-50 (129 mm with advertised "35 mm equivalent" of 720 mm) to give a "longer" lens. 300 x 1.4 x 1.5 = 630. In other words I expected that my pocket SONY would reach out a little better than my legacy "stack" of glass. 630 is much less than 720. To my surprise, the results were clearly the opposite of what I expected. The image on the a6000 was bigger (relative to the frame) and it did not take fine measurements to see it. This is not a trivial difference. Something is not as it looks OR I'm simply not using the numbers correctly. For those who wish to double check my specs, I'm using 6.17 mm x 4.55 mm for the sensor size of the HX-50 and the 129 mm = 720 mm is what SONY says. When I use an online calculator of field of view, I get 3.8 degrees for the a6000 and 3.1 degrees for the HX-50. That agrees with what I was expecting. Are there any experts out there who can clear this up? I can supply test shots later, but for now, assume I am accurately describing my results. Thanks. http://www.sony.com/electronics/cyber-shot-compact-cameras/dsc-hx50-hx50v/specifications HX-50 picture: 5184 x 3888 vs a6000: 6000 x 4000.

Dear all, I hope someone can help me with an issue I have with my Sony Alpha 7. This camera is attached to a microscope to make images and videos from surgeries. For courses we transmit these images directly to our conference room (which is 30-35meter away from the surgery room) and we used therefore HDMI extender. These worked perfect with other cameras. With the Alpha the images are not transmitting. When I plug in a HDMI immediately into a screen, it works perfect. When I try the same thing using HDMI extenders, not a single images is coming through. see attached drawing. Would this be an issue with the camera? Other something else? Thanks in advance for your thoughts! It would help me a lot! Kind Regards