menexmachina

Had a couple of m4/3 & c-mount lenses that I decided to test with the A7Rii and its zoom function. Lets first see how the quality of the zoom mode compares to the FF and S35 modes. Test done with FE 55 f/1.8 at 12800 ISO recorded in 4K 100mb/s.   For FF, S35, S35 x1.5 & S35 x2 the fov was matched in camera. The S35 150% & S35 200% were shot at x1.5 & x2 distances respectively and cropped in Premiere. Quality is best with S35 as expected. S35+1.5X and S35 with 150% crop are very close to FF. It appears that the zoom mode works by cropping the S35 and upscaling again to 4K. Then I tested the SLRMagic 25mm and I was delighted to find that it was usable even with X1.1 zoom. A c-mount lens that I had was usable with X1.4 zoom. I was surprised by that since spec wise it was designed for a 2/3" sensor. I really liked the hexagonal blur plus it focuses at 10cm! So there you go folks. If you have the A7rii and any manual m4/3 or c-mount len...

My laptop was not very happy that I got the A7rII. So there my quest for the smoothest 4K editing begun. First, I tried transcoding, but as you will see further down it did not give me the results that I was expecting, I could not match the quality of the original. Low res proxies would not cut it since I use warp stabilizer before I start editing. “Fkit, I ll make the machine of my dreams” I said. But no luck. This buttery smooth experience that I had with 1080p was impossible to reproduce with 4K XAVC-S. Solution? 4K proxies. All tests below were done with an E5-1680v3 @4.5, 64GB EEC RAM, TITAN X, Revo 350 among other irrelevant hardware with Premiere CC 2015 and Windows 10. Hard to build something faster for Premiere ( https://www.pugetsystems.com/labs/articles/Adobe-Premiere-Pro-CC-Multi-Core-Performance-698/ )  . A single XAVC-S 4K 24p file was used. to render all the files with “Max Quality”, “Render at maximum depth”, “Use maximum render quality” with the ...