bayer filter and resolution?

T

themagickite

Well-known member
i was just wondering if someone could shed a little light on this matter for me.

so i've heard people complain about single chip cameras before, because the bayer filter lowers the effective resolution. I'm wondering if taking out a 1080 signal from the high rez sensor on the af100 will have an advantage in that regard?

i guess they've designed the processor with the anti aliasing and all that to get as good an image out of the sensor as they can, i'm just wondering if that's making the best of a non ideal sensor or if starting with extra rez is ideal?
 
Actually, I think Bayer is the best all-around solution. This is after 20 years of working with video. I started out with a Bayer camcorder, gladly moved on to a few 3-CCD camcorders, but now am thinking about some day buying a good Bayer camera.

You might read Why Bayer, by Graeme Nattress, of RED.

And Otis Grapsas will give you an earful about image sensor development.
 
themagickite said:
so i've heard people complain about single chip cameras before, because the bayer filter lowers the effective resolution. I'm wondering if taking out a 1080 signal from the high rez sensor on the af100 will have an advantage in that regard?
Click to expand...
Bayer results in an effective lowering from the chip's native count, yes. So if you have a "4k" chip like the Red One, you get an effective "3.2k" of resolution out of it.

The AF100 has (probably) at least a 4K chip, and it's being asked to make a "1.9K" image out of it. So the loss of resolution due to a Bayer pattern should be not much to worry about, because it's being downconverted to 1920x1080 anyway.

Plus, we don't yet know that the AF100 even uses a Bayer pattern! Probably does, but we don't KNOW it yet.
 
I love the Foveon concept, and think it has far better potential then Bayer sensors. Its a shame none of the big players seem to be interested in it and Sigma doesn't seem to have the money to keep up. Though the new SD1 concept looks rather impressive.

I just hope it doesn't end up being another x86 vs PowerPC repeat.
 
The Foveon is an interesting technology, but it's not without its problems too.

foveon-vs-conventional.jpg



The sensor appears to have a bit more noise than standard sensors and highlights can get blown out a lot easier.



Bob Diaz
 
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