HV10/HV20, FX1, and Keying

F

Fugitive

Well-known member
Hi all,

The HV10/HV20 have a progressive chip, so given there is enough light, they should produce a better key than an FX1 in the same conditions, is that right?
 
Not really. The HV10/20 have only a single CMOS chip that's smaller that the three chip of the FX1 (1/2.7'' vs. 1/3'' inch) so color reproduction won't be as good, with less lattitude and more noise.
 
Correction: HV10/20's chip is BIGGER. 1/2.7 is larger than 1/3 (smaller denominator = larger size; 1/2.7 = .37", 1/3 = .33").

But there are so many other factors to consider. The HV10/20 are multiple-megapixel single-chip CMOS cameras that use bayer filtering, the FX1 is a single-megapixel 3-chip CCD camera that uses pixel shift. How can you even begin to compare them, on paper?

Then, confounding the issue is that the FX1 records 60i using interlaced 4:2:0 chroma. The HV20 should use progressive chroma in its 24P. That would be an advantage (and probably the advantage you were hoping for) but would that alone make up for the fact that you're comparing a tiny $1100 camera against a semi-pro $3700 camera?

The only way to answer this question is to put 'em to the test and see what the reality is.
 
Thanks everyone.

Emanuel, I have been to that site. Thats what was basing my assumption on. If the picture looks about the same, and the Canon shoots progressive, with a higher mega-pixel sensor (albiet only one), and has a slightly larger chip, perhaps chroma/green-screen would be easier.

As Barry pointed out, the only way would be to place them side-by-side and do a test.
 
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