Just when you started believe the low noise myth

The now famous and soon to be immortalized king of freeze
spray...Annika1980, also know as various other names elsewhere but we'll
call Bret here... Claimed ISO,400... 20D images have no noise in the
shadows. Amazing. Here is me having used several noise reduction
programs for years on 10D and 20D ISO 100 files, now confronted with
this amazing revelation from Bret.
http://www.weprint2canvas.com/20D-noise.htm
I just happen to own a few 20Ds and a couple of 5Ds and I reckon he is
stretching the truth just a tiny little bit with that statement. I
admit, I took this picture in what is probably a 20Ds worst possible
condition for noise but... It was at ISO,100 and a mere 1.8 stop under
exposed. Considering the latitude claimed for this camera, the images
have taken a noticeable shift in way too many areas - IMO.
The image shifted to red.
It picked up substantial contrast
Lost noticeable clarity (sharpness)
And made it look like an ISO,3200 image.
If I shot the pic at ISO,1600 and over exposed by 1 stop, it would have
had less noise in the image than this ...but that is another chapter of
the story.
--
From Douglas...
My photographic site: http://www.douglasjames.com.au
Canvas Archival and Metallic Prints: http://www.canvasphotos.com.au

Dmac

Re: Just when you started believe the low noise myth

All quotes from the thread:
DRAGONFLIES LOVE THE 20D
---
I'm not seeing what you're seeing. Here is an actual size crop from
the original with no sharpening, noise reduction, or post-processing
applied.
http://www.pbase.com/image/62289070
So whatever you are seeing must have come from me in Post rather than
from the sensor of the 20D.
If that isn't claiming the 20D hasn't got any noise at 400 ISO, what
exactly are you claiming?
--
From Douglas...
My photographic site: http://www.douglasjames.com.au
Canvas Archival and Metallic Prints: http://www.canvasphotos.com.au


Dmac

Re: Just when you started believe the low noise myth

Without the raw file we really can't tell anything by your examples.
You compensated for the under exposure but did not tell us just how you
did this. If you shot with jpeg then the test is meaningless since
jpeg images have much less shadow detail than a raw image will.
If you tried to adjusted the expsoure in Photoshop, working on a jpeg
image, then I would blame the shifts you saw to you workflow more then
the camera.
Scott


Scott W

Re: Just when you started believe the low noise myth

Before I call you a liar I'll give you a chance to cite where I said
that.
Nice strawman.


Annika1980

Re: Just when you started believe the low noise myth

Hi---I am sure all of you know about this website:
http://www.dpreview.com/
But in case you don't, I thought I would include it here. I know this
is the wrong newsgroup for digital, but there are quite a few
photographers in this newsgroup who shoot digital. It is a great
website for anyone who wants a thorough review, or specs of a
particular camera. I noticed some cameras are not given a thorough
review, but specs of each camera is excellent.
Helen


Helensilverburg@hotmail.com

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