SONY A7RII with a 90mm macro lens – Image size comparison with the SubSee +5 and the Nauticam SMC
I was checking out different options of so called “wet-lenses” on the SONY A7RII in a Nauticam NA-A7II housing. I used the SONY FE 90mm F2.8 Macro G OSS lens without a wet-lens, with SubSee +5 and with the Nauticam SMC and compared the subject sizes at maximum magnification.
When using no “wet-lens” in Super 35mode, the image size is very similar to when using a SubSee+5 in Full Frame mode & when using a SubSee+5 in Super 35 mode the image size is very similar to when using a SMC in Full Frame mode.
The difference is that you have 42MP in Full Frame mode vs 18MP in Super 35 mode. Of course when shooting stills we want to have the full 42 MP (why else would we pay for them), but the Super 35 mode becomes really handy when shooting video. In both modes the A7RII is recording 4K in camera. It’s like having an extra teleconverter with you while diving. When I’m shooting video I try to use the Super 35 mode whenever possible, but when the subjects are a bit larger, it’s very nice to be able to shoot in full frame mode and get a tick closer.
Here are some images with my results:
All images taken at F18, 1/125sec, ISO ranged from 1250 – 2000 (I had the camera on AUTO ISO)
Final conclusion: For shooting video with the A7R2 there’s no need for the SubSee +5, but it can be useful when shooting stills. I will do some more testing and keep you posted.