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How are the front and rear diameter?

IMO, they are in between. 100mm taking lens in FF is safe. Using 85mm with close focus and wide open aperture is ok. Since Schneider has larger glass size, reducing vignette has a little bid advantage.

IMO, this is second widest cheap lens besides 16h. But the rear size is too small (43mm or less). So better used for APS-C or smaller CMOS.

Are they single focus?

What I said is based on FF, nothing wrong. According to TITO's calculator, comparing with 16H, you can see how much difference. By the way, IMO, without vignetting, must be focus at infinity with small aperture to test.

70.6mm standard rear thread, as all the big 35mm film projector lens.

Impossible. That is why you need

16D needs 135mm or over on FF. 16H can go below 85mm on FF.

IMO, only need to squeeze on vertical pixels. Because "4K UHD is a resolution of 3840 pixels × 2160 lines (8.3 megapixels, aspect ratio 16:9) " from Google.

Hi, I just used two different 2x front and rear lens and got at least 2.8x ratio. But looks like it needs much longer FL taking lens to use. P.S. Image taken by hand hold front lens, 3m distance, resized only.

filter thread added.

First time see this lens: http://www.ebay.com/itm/131898924430 It is a big lens. So I am not interested in it. Do you think how much it is worth?

2X for sure. 1.33x does not have so wide ratio for 3:2 Cmos. BTW, no any process, resized only.

I just uploaded some photos, guess what anamorphic lens used. https://flic.kr/s/aHskFDZaXB

I don't understand it. why? Comparing with which lens, can you explain more? Thanks.

I bought this lens just curious about the 1.5x~2x. But when I saw the distance scale are different from other anamorphic lens(longest is infinity). Then found it is as SLR rangefinder(shortest is infinity). So realize it contains a focus module. I tried to set prime lens in focus distance, won't get clear image. Must set to at infinity, then focusing by anamorphic lens only. The closest focus distance actually can go under 4M.

Do you think Möller & Rathenowerwhich which lens's flare is better? I have Möller lens only, the flare is very good IMO.

Are Möller & Rathenower the same lens in optics?

Yes. Believe or not? Found another new world. This is the quick test video, used as 2X.

Did any one know about it?

Mine is $50 off, $650 ship.

Any one knows this lens? http://www.ebay.com/itm/291823809693 How come it looks crooked?

US$700 including shipping

16H, front glass excellent, rear has very light cleaning marks. Market price.

I sold my B&H and others, keep ISCO. You need to compare the value and performance. All these are dual focus lenses.