Cesar Rubio
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At f/1.4 most of your tif looked good as far as aliasing and chroma moire, but there did seem to be a little aliasing on your nose which was the most in focus, I can see at smaller stops bigger issues could show up.
Have you seen these links, there is some info in them on OLPF,
Link about Epson's new OLPF filter,
http://www.epson.co.jp/e/newsroom/2007/news_20070906.htm
http://www.epsontoyocom.co.jp/english/product/Optical/set08/olpf_4/index.html
Here is another type, they have some files you can read on their site,
http://www.optics-online.com/lpf.asp
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The OLPF needs to be larger than the sensor so that the edge rays from the lens do not get cut off.
Since these are about 2mm think they add negative spherical aberration when fast lenses are used and introduce some focus shift issues between working full open and stopped down, many lenses are not corrected for having such a thick plate between them and the focal plane. To combat the loss of focus the sharpen can be made stronger, but that adds noise etc.
Thanks Dan for the info on OLPF's.
I've already knew some info, and actually I am in contact with Sunex too.
But any extra info is always welcome and appreciated. :beer:
Also Edmund Optics sell a lot of filters for MVC for different sensor and pixel sizes. (they are very cheap and you can buy one by one, and not have to order a batch of filters like in Sunex)
The biggest problem with OLPF's, is that they have to be made according to exact sensor specs, in order to get the best quality out of them and not produce excess blurriness...
Things like pixel size and distance of placement of the filter count a lot....
Most MVC manufacturers don't want to deal with such "problems", because for most of the MVC Industry they want the sharpest resolution possible, and usually don't care if the picture is "nice" or not. (like we do for Cinema)
Another thing is that many of the MVC applications record the images in mono (B&W), and the resolution is higher than "color" (bayer), because every pixel in the sensor is used to capture the B&W images...
And we already know that at higher resolutions (like 4K bayer for example) the less aliasing and "jaggies" in the final image (hence they need less AA "anti- aliasing" qualities in the OLPF)
I think that is one of the primary issues (among others) that had slowed down the wide acceptance of MVC's for Cinema purposes...but we are close! :thumbsup:
CR.