[Leica] ISO 3200 and the DMR.

[grduprey at mchsi.com (grduprey@mchsi.com)]

David,

Even at the noisey 3200, still a cool photo.

Gene


-------------- Original message from David Young <telyt@telus.net>: 
-------------- 


> 
> All: 
> 
> Last night, the moon caught my attention. You see, it was almost 
> blood red... the colour being caused by smoke from the "Tripod" 
> forest fire, in Washington State. 
> 
> The Tripod fire is an immense fire, being fought by 1500 fire 
> fighters. There is no heavy equipment being used because of the 
> incredibly rough terrain, but water bombers are being used 
> extensively. By late Tuesday night, the fire was estimated at 
> 147,095 acres (60,000 hectares) , nearly 230 square miles (600 square 
> kilometers), an area roughly the size of Chicago. 
> 
> Three hours ago, The National Post reported: 
> 
> >...the Tripod Complex fire, which has been burning since July 24, 
> >has engulfed more than 60,800 hectares and was estimated to be about 
> >five kilometres from the B.C. border, south of Osoyoos, yesterday. 
> >Both fires have been sending "huge amounts" of smoke "all over the 
> >southern half of the province," said Rucker. 
> 
> For the last two days, we've had heavily overcast skies... but not a 
> cloud around... it's all smoke, and when it drifts lower, the air is 
> permeated with the smell of the world's largest campfire. And it has 
> created the most unusual moon! 
> 
> The problem is that exposures must be kept to less than 1 second, at 
> 1000mm, or motion from the earth will blur the photos. Because the 
> moon's brilliance is so dimmed by the smoke, I tried both ISO 1600 
> minus 1EV = 3200 and ISO 1600 minus 2 EV = ISO 6400. 
> 
> At an effective ISO of 3200, the noise was significant, but because 
> of the extreme nature of the shot, not too bad. A far bigger problem 
> was the soft focus due to the thick smoke! 
> 
> At an effective ISO of 6400, the noise was terrible. However, you'll 
> have to take my word for it, because when the shots are reduced to 
> 400x600 pixels, the noise is lost in the compression and size. But, 
> trust me, it was not usable. 
> 
> Anyway, if you're interested in seeing the moon as you seldom will... 
> 
> http://www3.telus.net/~telyt/Red_moon.htm 
> 
> Exposure was 0.7 seconds @ f5.6 (in truth, f11). 
> 
> Thanks for looking. 
> --- 
> 
> David Young, 
> Logan Lake, CANADA 
> 
> Wildlife Photographs: http://www.telyt.com/ 
> Personal Web-pages: http://www3.telus.net/~telyt 
> 
> 
> 
> 
> 
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