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Old July 3rd, 2008   #20 (permalink)
daveb867
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Join Date: Aug 2006
Location: Manchester
Age: 22
Posts: 784

Name: Dave Buckley


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Default Re: Exposure expert needed!! Damn mrPhotographic Exposure

Ok so in that case, the EV value in MR is well out.

So from what i understand camera values for ISO 100 are caluclated correctly. If i use any other ISO then i need to move the shutter speed in the same direction to get the same exposure.

For example, what you are saying is

Shutter Speed 1/1, f-stop f16, ISO 100 = EV 8.

IS THE SAME AS OR GIVES THE SAME EXPOSURE RESULT ON AN IMAGE AS

Shutter Speed 1/4, f-stop f16, ISO 400 = EV 12

The exposure values are so different yet they look exactly the same when dialled in and rendered. You would expect EV 12 to be much darker than EV 8 right??

But if the camera controls aren't contirbuting to DoF etc, then it would be safe to constantly stick with an ISO 100 and then adjust the other values to suit as this would give us a correct EV value for our desired scene??

ZAP i suggest you do a blog entry to clear this issue up
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