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Sigma/Foveon Questions



 
 
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  #1  
Old April 17th 10, 03:47 AM posted to rec.photo.digital
Rich[_6_]
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Posts: 1,081
Default Sigma/Foveon Questions

Bubba wrote in news:2d63ad63-d830-4403-b532-
:

I don't understand how a sensor can claim 14 pixels, and the photo
itself be 4.


Foveon has its issues, but it is prima proof that Bayer and AA filters do
rob images of resolution and sharpness.
  #2  
Old April 17th 10, 04:05 AM posted to rec.photo.digital
nospam
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Posts: 24,165
Default Sigma/Foveon Questions

In article , Rich
wrote:

Foveon has its issues,


yes it does.

but it is prima proof that Bayer and AA filters do
rob images of resolution and sharpness.


nope. it's proof that false advertising and high levels of sharpening
can fool people.
  #3  
Old April 17th 10, 08:52 AM posted to rec.photo.digital
nospam
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Posts: 24,165
Default Sigma/Foveon Questions

In article
,
Rich wrote:

It's no worse than Fuji claiming the S5 was 12 megapixels when it
clearly wasn't,


yes it is.

but at least when you sharpen an image from a Foveon,
it doesn't develop those horrible halos that Bayer/AA filtered sensors
do.


nonsense. if you oversharpen any image, you'll have problems.

Pretty much every reviewer has stated that the actual resolution
of a the 4 meg Foveon is on-par with an 8 megapixel Bayer sensor.


which means it's competitive with cameras from 4 years ago. that's not
very compelling.

meanwhile, canon has an 18 megapixel slr that costs *less* than the
sd15 will and it won't be stuck with sigma lenses either.
  #4  
Old April 17th 10, 07:07 PM posted to rec.photo.digital
nospam
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Posts: 24,165
Default Sigma/Foveon Questions

In article
,
Rich wrote:

meanwhile, canon has an 18 megapixel slr that costs *less* than the
sd15 will and it won't be stuck with sigma lenses either.


Yes, it is cheaper, it has a plastic body, they are cheaper.


there's nothing wrong with plastic. the images are what matter.

True,
you aren't stuck with Sigma lenses with the Canon. Let Sigma believe
it can sell the thing for a price in the mid-range of DSLRs, Reality
will bring them down to Earth.


like the sd14, the price will drop after a few months. the sd15 is not
competitive at 900 bucks.
 




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