[LRflex] More contoversy!

Just when you thought it was safe to go back into the computer/camera room!

OK.  We've talked before about the "work around" that Ted seems to hate 
so much, for the high ISO noise problem with the DM-R, as opposed to the 
simple cranking up the ISO with the Canon 20D.

I now offer you three photographs.

The first two were taken within minutes of each other, from the same 
vantage point, same DM-R (I can't afford two!) and with the same lens... 
the Telyt 400 f6.8 and 2x converter.   On the first shot (a squirrel) 
the ISO was set to 400, with the exposure compensation set to -3 stops.  
The second shot (a woodpecker) was also at ISO 400, but with the 
exposure compensation set to -2 stops.   Both shots were developed with 
identical parameters, other than the exposure compensation, which was +3 
and +2 stops, respectively... bringing them back to "normal" exposure.  
No more. No less.  Thus, we have two shots with **effective** ISO speeds 
of 3200 and 1600, respectively.

As a "control", I have found a similar style shot (of a Rufous-naped 
Wren), taken with the 80~200/f4 Vario-Elmar and 2x converter, on the 
Canon 20D at ISO 3200... with no exposure compensation.

This 'control' shot was "developed" with Silkypix, with identical 
parameters as the two above. 

All three were converted from RAW to .TIF files with Silkypix, and then 
to .jpg files in PS7.  All three had the unsharp mask (131%, 0.2 pixel 
Radius and 0 Threshold) applied.  No other image manipulation of any 
kind (other than to add copyright notices) has been done.  No noise 
reduction software of any kind has been used on any of these shots.

The large files are all in excess of 1mb, and may cause long download 
times for dial-up users.  (Sorry!)  And a screen resolution of 1024x768 
will make life easier.

Noise is most visible in the background areas of a photo where large, 
out of focus areas exist.  All three shots meet this requirement, though 
the background colours do change a bit.  I'm sorry, Jerry, but this is 
not as scientific as either you or I would like, but it's the best I 
could do, from photos at hand.  I think it still tells a valid story!

I make no claims about superior noise levels. Certainly, the DM-R at ISO 
1600 is not a usable camera.  However, to my eye, both the shots at the 
*effective* ISOs of 1600 and 3200 are noticeably superior to the Canon 
at ISO 3200.   Moreover, I think all three (which could all be further 
improved with Neat Image or Noise Ninja) have less noise than film at 
the same ISO!

All of this fallderall can be seen at: 
http://www3.telus.net/~telyt/Noise.htm

Once again... Nomex suit on... Kevlar vest in place.

You take a look.  You tell me what you see.

Cheers!

-- 
David Young,
Logan Lake, BC    
CANADA. 

Personal Web-site at: http://www3.telus.net/~telyt
Leica Reflex Forum web-page: http://www3.telus.net/~telyt/lrflex.htm

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