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Charles Binn
4K lenses
on Oct 12, 2013 at 5:09:39 pm

Are there any lenses with a resolution ready for 4K? Even the best DSLR Canon lenses have aresolution of 2.200 lines.
And we tested a lot of "prime lenses". Some have been better, some worse....

Charles



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David Battistella
Re: 4K lenses
on Oct 13, 2013 at 9:02:27 am

I believe that many lenses resolve past 4K. If you are talking TV lines of resolution 4K is pixels not lines.

Many cinema and stills lenses resolve far past 4K.

David

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http://www.davidbattistella.com



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Charles Binn
Re: 4K lenses
on Oct 13, 2013 at 9:32:15 am

Hi David,

maybe I am wrong. But if the resolution of a lens is about 2.000 lines for full format. Doesn`t this mean the lens cannot resolve more than 2.000 lines (or pixel lines)?
The Epic sensor is much smaller than full format. Doesn`t this mean it gets only a part of the resolution for full format?
Are there any test charts to proof your or my statement?

Thank you very much
Charles



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gary adcock
Re: 4K lenses
on Oct 13, 2013 at 7:44:33 pm

[Charles Binn] " But if the resolution of a lens is about 2.000 lines for full format."

I have never heard of a lens that can truly resolve at that high a resolution, most resolution charts do not exceed 300 or 600 lines per inch. Most lenses are designed with a much more conservative attitude towards resolution of less than 200 LPI

The MTF issues would be much more of an issue than pure resolution at that level, as would be lens aberrations, color of the specific wavelengths of light used, sensor resolution and relative Nyquist adaptation based on size of the actual photosites per individual sensor.

http://www.luminous-landscape.com/tutorials/resolution.shtml

and http://bit.ly/1fv9SuS

gary adcock
Studio37

Post and Production Workflow Consultant
Production and Post Stereographer
Chicago, IL


Follow my blog at http://www.garyadcock.com

Or follow me on Twitter
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