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JML 17mm f/0.95 on a Yi 4K+
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PostPosted: Thu Oct 19, 2017 3:53 am    Post subject: JML 17mm f/0.95 on a Yi 4K+ Reply with quote

Hi,

I obtained an incredibly affordable and rare JML f/0.95 lens a few weeks ago.
Here is one of my first test footage with it.

I was expecting more color fringing with such a wide aperture but it performs amazingly !

https://www.youtube.com/watch?v=jqCdCXmgeAw


PostPosted: Tue Dec 12, 2017 3:06 am    Post subject: Reply with quote

How big image circle? Looks ok on yi as viewed on YT...


PostPosted: Thu Dec 14, 2017 12:36 am    Post subject: Reply with quote

I'm not sure. It looks like to be a rebadged Navitar 17mm f/0.95.
If so, I had a great deal because I bought it for $75 and it is usually sold at around $590
It doesn't cause any vignetting on the Yi.

http://ccddirect.com/17mm-f-0.95-highspeed-navitar-lens.html


PostPosted: Thu Dec 14, 2017 2:12 am    Post subject: Reply with quote

Navitar is C-mount, covers 1" sensor. Might cover APS-C. I'd like to see APS-C results.


PostPosted: Thu Dec 14, 2017 9:04 pm    Post subject: Reply with quote

Yes it's C-mount, but the maximum cover range of C-mount lenses is 4/3 sensors (22mm diagonal). And a lot of C-mount lenses are causing vignetting on 4/3, so I think it will have some strong vignetting on aps-c.

I don't have aps-c camera anymore. My only other digital camera is a CCD medium format. I can't test it.

There is a guy who used the JML 25mm f/0.95 on a Panasonic G1 (m4/3) and we can see the strong vignetting on its photos :
http://oldlenses.blogspot.com.co/2009/06/more-jml-25mm-f095-pictures.html

The Zenit f/0.95 looks more suited to aps-c