Fujian Lens on bmpcc metabones speedbooster?

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walkingheadpro

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Fujian Lens on bmpcc metabones speedbooster?

PostSun Mar 30, 2014 6:45 am

I was wondering if and how a CCTV Fujian lens 35mm f/1.7 or 25mm version can fit on the nikon G mount metabones speedbooster?

The lens comes with a C mount and can fit the bmpcc without the speedbooster.. I'm new to lenses, I hope someone here can educate me.

Thanks
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Dustin Boswell

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Re: Fujian Lens on bmpcc metabones speedbooster?

PostTue Apr 01, 2014 6:41 am

walkingheadpro wrote:I was wondering if and how a CCTV Fujian lens 35mm f/1.7 or 25mm version can fit on the nikon G mount metabones speedbooster?

The lens comes with a C mount and can fit the bmpcc without the speedbooster.. I'm new to lenses, I hope someone here can educate me.

Thanks


I wouldn't advise putting it on a the Speedbooster.

The effective sensor size change from the speedbooster would likely cause vignetting in the lens since the C mount was meant for Super 16mm or lower sensor size (the Fujians if I remember are Security Camera lenses or Industrial Application lenses)
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adamroberts

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Re: Fujian Lens on bmpcc metabones speedbooster?

PostTue Apr 01, 2014 7:14 am

The Speed Booster works by magnifying the sensor. So, to the lens, the sensor appears larger than it is.

So on the BMCC only lenses designed for ASP-C size sensors or bigger will work.

Lenses designed for smaller sensors (16mm, Super 16mm, 2/3", etc) will all vignette as the image circle would be to small to cover, the now magnified, sensor on the BMPCC.
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AdrianSierkowski

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Re: Fujian Lens on bmpcc metabones speedbooster?

PostTue Apr 01, 2014 1:51 pm

Also since the FFD of a c-mount is even less than a MFT FFD you may, while screwing the lens into the peed booster, really screw up either the glass or the booster, depending how deep that lens needs to sit.
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