Please advise, Nikon d800e with 24-70mm v Canon 5d m3 with 24-70mm...

Started Oct 15, 2012 | Discussions thread
Vivid1
Regular MemberPosts: 240Gear list
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Re: Well in fact
In reply to bobn2, Oct 20, 2012

bobn2 wr

So, this is where we came in - so, by adjusting the ISO you can have the shutter speed that you want (within obvious limits) - so, what is it the determines minimum shutter speed? This comes back to why I say that the minimum shutter speed is the same, whatever the f-number of the lens.

So why keep the f-number constant or ISO?? If you are worried about the shutter speed, use Tv - it is very, very simple Bob.

your premise is wrong. The point of exposure management is to fit as much as possible of the scene's tonal range into the camera's DR, secondarily to use the section of the camera's DR that will give you maximum image quality, and thirdly, if the scene's tonal range is too great to fit within the camera's DR, to chose which part you are going to lose, in order to gain the effect from the shot that you want. Whether the outcome leads to 'under' or 'over' exposing by your simplistic definitions, I really don't care.
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Bob

So Bob, by your own words above, by optimizing exposure (ie - use CORRECT exposure), you fit as much of the tonal values into the DR of the sensor right... So why do you need to underexpose when you have ALL the means on camera to get the exposure right????

You should publish this: Bob's exposure methodology;  just pick a shutter speed and f-stop and ISO (as long as it underexposes) and fire away - you can set the 'brightness' later... Well go ahead and fire away. The rest of us will expose correctly.

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