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Member Since 04 Feb 2009
Offline Last Active Nov 22 2015 07:00 PM

Posts I've Made

In Topic: FS Olympus OM-D EM-5 and Nauticam housing

22 November 2015 - 05:36 PM


In Topic: Metabones Smartadapter IV with Sigma 15mm

21 November 2015 - 11:12 AM

Kulupa - Your screen going black issue may be related to the sensor in the camera that switches between the viewfinder and the LCD screen. In the A7rII, this sensor is hyper-sensitive and may switch off the LCD (and switch on the EVF) anytime anything passes within inches of the VF. It varies between individual cameras. Mine turned out to be so sensitive that the LCD turns off whenever the back goes on the housing (regardless of the position of the switch on the housing for VF/LCD). So it was impossible for me to use the LCD with the camera in the housing until I found this workaround: http://reefphoto.com/kb.php?id=95

In Topic: Metabones Smartadapter IV with Sigma 15mm

21 November 2015 - 11:05 AM

Sorry - deleted those test shots already. You've seen it before, I'm sure - purple fringe CA along edges of objects near outside edges and corners of frame. No, I'm not saying it's worse than on a Canon camera. I'm sure you'd see exactly the same thing on any camera with similar resolution, although I've never used this lens on a Canon, so I can't say from personal experience. The CA (chromatic aberration) comes from the lens, not the camera, but it's more apparent with higher resolution. 

In Topic: Is the sony a7r2 (w/Nauticam) worth the money? Any experiences w/this equipment?

19 November 2015 - 12:08 PM

One big difference I have found between DSLR and mirrorless is the viewfinder. If your shooting style is mostly point & shoot, it won't matter. But if you do much composing through the viewfinder you may find (as I have with the Sony a7r) that the little electronic viewfinder and LED can both be hard to work with, especially if the ambient light is high. I much prefer the optical viewfinder on an SLR.

In Topic: Metabones Smartadapter IV with Sigma 15mm

19 November 2015 - 11:58 AM

Yesterday I upgraded my Metabones MK IV to the latest firmware, upgraded my a7rII to the latest firmware, and started trying out lenses. So far, focus has been fast and accurate with every Canon lens I have tried, including 8-15mm, 15mm, 20mm f2.8, 17-40mm f4L, 70-200mm f2.8L, and 100-400mm (old style). I'm noticing severe color fringing on the Canon 8-15mm (tested at 15mm). I don't have the Sigma 15mm with a Canon mount, so I can't do a direct comparison.