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[OM] Re: More Dynamic Range

Subject: [OM] Re: More Dynamic Range
From: Moose <olymoose@xxxxxxxxxxxxxxx>
Date: Wed, 28 Sep 2005 20:56:02 -0700
Winsor Crosby wrote:

><Big snip of interesting stuff>
>
>So what's the DR number for digital?  
><more interesting stuff snipped>
>  
>
One of the things I considered in choosing to purchase the F10 is the 
lack of any output other than JPEG, and the limited DR that goes with 
it. Other factors in the overall mix, and the lack of other cameras 
meeting my other desired qualities - and with RAW, led me to decide to 
go ahead anyway.

One thing I wanted to try out is using two shots at different exposures 
combined to give a wide DR. No point trying it with tripiod and care, as 
that's not how this camera will be used. So I took a fair number of 
"double" exposures, hand held, by guess and by golly.

I think there is really a lot of potential here. I haven't tried any of 
the software to do this (semi?) automatically. Partly because I expect 
it may not work too well with my imperfectly registered shots. Partly 
because I wanted to see what the process is like, so as to understand 
it. Obvioiusly it's not for pros doing weddings/events, sports, that 
sort of thing, but fine for a few shots for me.

So here are the first tries. Mostly not outstanding shots that would be 
worth all the effort otherwise, but good try-outs. I notice that my 
choice of exposures seems to have improved over a few days 
<http://moosemystic.net/Gallery/tech/Combos/>.

The first shot was on my second day of serious shooting and my first 
attempt at the technique. Clearly I could not get with the camera what 
my eyes were seeing, so I tried it. In retrospect, I should have taken 
another shot between the two I took in exposure. The differences are so 
great that blending them is quite difficult.

The second shot works better, but I didn't tone down the "bright" shot 
enough and lost some cloud highlight detail.

The third worked very well. Clean enough to look good in a pretty good 
sized print, I think. The subject is again not of general interest, but 
significant to those where there at the time.

I don't know what I was thinking when I took one of the shots of the 
fourth example. How did I manage to cut off the fan light in one? Oh 
well, I found the challenge of getting a good looking composite worth 
while anyway. Another example of a subject that simply can't be captured 
properly with a JPEG camera in one shot.

There are a few more that I may try out and add later. I don't know what 
the DR number for these combo shots is, but it's a lot more than the 
singles!

Moose


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