A Photography forum. PhotoBanter.com

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Home » PhotoBanter.com forum » Digital Photography » Digital Photography
Site Map Home Register Authors List Search Today's Posts Mark Forums Read Web Partners

"3MP" Showdown



 
 
Thread Tools Display Modes
  #1  
Old July 4th 04, 08:58 AM
George Preddy
external usenet poster
 
Posts: n/a
Default "3MP" Showdown

3MP Bayer image (0.75 Foveon MPs)
http://www.pbase.com/image/30338213/original

3MP Foveon image (13.72 Bayer MPs)
http://www.pbase.com/image/23256593/original
  #2  
Old July 4th 04, 10:13 PM
John McWilliams
external usenet poster
 
Posts: n/a
Default [OT] [GP] "3MP" Showdown

George Preddy wrote:

3MP Bayer image (0.75 Foveon MPs)
http://www.pbase.com/image/30338213/original

3MP Foveon image (13.72 Bayer MPs)
http://www.pbase.com/image/23256593/original

{please note}

The person posting under the name of George or Georgette Preddy (and
other pseudonyms) has an ungrounded but zealous faith that current
implementation of the Foveon chip is superior to all other chip
technologies. He will cite portions of reviews to ostensibly support his
claims, and will repeat, ad naseum, complete lines of out-of-context
material.

His claims may well be ignored, or at the very least verified since most
of them are extreme distortions and some are out and out fabrications."

Moreover, "Mr." "Preddy" has claimed to be a photographer (pro!), but
cannot bring himself to post a single picture with EXIF info that he
shot himself, in spite of repeated requests and challenges to do so.

Apparently he loathes anything related to Canon and loves everything
about Sigma cameras and lenses. His "claims" may be ignored, and he is
doing Sigma, and anyone related to the Foveon chip, no good at all by
arousing ire, increasing the N/S ratio, and generally spamming this
newsgroup.

--
John McWilliams
  #3  
Old July 5th 04, 11:58 AM
George Preddy
external usenet poster
 
Posts: n/a
Default "3MP" Showdown

John McWilliams wrote in message news:fq_Fc.24529$Oq2.19544@attbi_s52...
George Preddy wrote:

3MP Bayer image (0.75 Foveon MPs)
http://www.pbase.com/image/30338213/original

3MP Foveon image (13.72 Bayer MPs)
http://www.pbase.com/image/23256593/original

{please note}

The person posting under the name of George


Seems like you are at a loss to explain the mega dominance of Sigma in this market.
  #4  
Old July 5th 04, 01:20 PM
Bart van der Wolf
external usenet poster
 
Posts: n/a
Default "3MP" Showdown


"George Preddy" wrote in message
m...
John McWilliams wrote in message

news:fq_Fc.24529$Oq2.19544@attbi_s52...
George Preddy wrote:

3MP Bayer image (0.75 Foveon MPs)
http://www.pbase.com/image/30338213/original

3MP Foveon image (13.72 Bayer MPs)
http://www.pbase.com/image/23256593/original

{please note}

The person posting under the name of George


Seems like you are at a loss to explain the mega dominance of Sigma in

this market.

Steve, you are wrong, again, as usual. Sigma does not dominate this market.

Bart

  #5  
Old July 5th 04, 09:38 PM
Mark B.
external usenet poster
 
Posts: n/a
Default "3MP" Showdown


"Bart van der Wolf" wrote in message
...

"George Preddy" wrote in message
m...
John McWilliams wrote in message

news:fq_Fc.24529$Oq2.19544@attbi_s52...
George Preddy wrote:

3MP Bayer image (0.75 Foveon MPs)
http://www.pbase.com/image/30338213/original

3MP Foveon image (13.72 Bayer MPs)
http://www.pbase.com/image/23256593/original
{please note}

The person posting under the name of George


Seems like you are at a loss to explain the mega dominance of Sigma in

this market.

Steve, you are wrong, again, as usual. Sigma does not dominate this

market.

Bart


Sigma doesn't dominate *any* market.

Mark


  #6  
Old July 5th 04, 10:55 PM
Mark Roberts
external usenet poster
 
Posts: n/a
Default "3MP" Showdown

"Mark B." wrote:

Sigma doesn't dominate *any* market.


They dominate the market for cameras and lenses that use the Sigma lens
mount. grin

--
Mark Roberts
Photography and writing
www.robertstech.com
  #7  
Old July 5th 04, 08:54 PM
Crownfield
external usenet poster
 
Posts: n/a
Default "3MP" Showdown

George Preddy wrote:

John McWilliams wrote in message news:fq_Fc.24529$Oq2.19544@attbi_s52...
George Preddy wrote:

3MP Bayer image (0.75 Foveon MPs)
http://www.pbase.com/image/30338213/original

3MP Foveon image (13.72 Bayer MPs)
http://www.pbase.com/image/23256593/original

{please note}

The person posting under the name of George


Seems like you are at a loss to explain the mega dominance of Sigma in this market.


you misspelled insignificance ...
  #8  
Old July 5th 04, 11:27 AM
Justin Thyme
external usenet poster
 
Posts: n/a
Default "3MP" Showdown


"George Preddy" wrote in message
om...
3MP Bayer image (0.75 Foveon MPs)
http://www.pbase.com/image/30338213/original

3MP Foveon image (13.72 Bayer MPs)
http://www.pbase.com/image/23256593/original


Yup, you proved that the Sigma takes a significantly better photo than a
compact P&S that (in Australia at least) costs 1/6th the price of the Sigma.
I notice that there is no exif info for the Sigma - what ISO? what exposure
settings? The only way to make a proper comparison is if both cameras take a
photo of the same subject in the same lighting. Considering I've seen much
better quality photos than that out of 3MP P&S's I'm dubious about how
accurate the ISO settings etc are with the Sony.
Considering the Sigma has a larger sensor size and better lens than the
DSCP72, and costs several times its price, it's to be expected that it will
always take a better photo in the same conditions - irrespective of whether
it is a Foveon or a Bayer sensor. This is just the same as how a cheap film
SLR will usually take a better photo than a film P&S, even with the same
film.


  #9  
Old July 5th 04, 10:42 PM
Leonard
external usenet poster
 
Posts: n/a
Default "3MP" Showdown

Justin Thyme wrote:
"George Preddy" wrote in message
om...

3MP Bayer image (0.75 Foveon MPs)
http://www.pbase.com/image/30338213/original

3MP Foveon image (13.72 Bayer MPs)
http://www.pbase.com/image/23256593/original



Yup, you proved that the Sigma takes a significantly better photo than a
compact P&S that (in Australia at least) costs 1/6th the price of the Sigma.


What it shows is that a small-sensor digicam will produce results which
are dominated by noise if you run it at high iso. The image at:

http://www.pbase.com/image/30968764/original

was taken with a similarly cheap compact P&S. It's by no means a
technically flawless shot but it's in a different league to the
Sony picture George referenced.

The picture of the SD9 contains a useful illustration of why blur
filters should be used even when sampling with full colour at each
location. Simply view the picture at 50% with an application that
does not do proper antialiasing for generating such a view (eg GIMP) -
artifacts are very visible in the filter threads. Similarly my
own picture shows a mess of artifacts at 25%

- Len
  #10  
Old July 6th 04, 07:20 PM
Leonard
external usenet poster
 
Posts: n/a
Default "3MP" Showdown

Leonard wrote:

http://www.pbase.com/image/30968764/original


correction:

http://www.pbase.com/image/31010266/original

I redid the rotation and crop down to 3MP with jpegtran (lossless) so as
to show more closely the actual camera output. The main difference is the
file size is quite a bit smaller.

- Len

 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Forum Jump


All times are GMT +1. The time now is 10:29 PM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004-2024 PhotoBanter.com.
The comments are property of their posters.