D300 ISO

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Tony
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On the D300 i see settings that are below 200 ISO, can anyone explain in easy terms how this works please.
I know i should read the manual, and have tried but suffering from Dyslexia, it all becomes non compreto.



Thanks...
 
Keep the D300 at ISO200. ISO100 is faked and you lose dynamic range - same as shooting ISO200 + 1EV.
 
puddleduck said:
Keep the D300 at ISO200. ISO100 is faked and you lose dynamic range - same as shooting ISO200 + 1EV.
Click to expand...

But the 300 doesn't do ISO 100 ?.or are you saying ISO +1EV is as 100 ISO.

Thanks..
 
As far as I am aware the ISO settings of L0.5 and L1 are ISO 150 and 100 receptively. Take a shot using these settings and look at your Exif file. It will tell you the ISO used.
Don't know about it faking them though.
Mick
 
Tim Dodd can explain very well how ISO is faked on Canons, whether or not that applies to Nikons or not I don't know.

Basically, the 'native' ISO of the sensor is 200, in which case try to avoid using lower...
 
Its interesting becuase in the EXIF ISO L1.0 does show up as ISO100. I use it a lot to reduce the speed as much as possible ie F29 ISO L1.0 when using ND110 or ND8 in daylight. Didn't know it was faked or affected dynamic range - will need to compare two shots one at say ISO 200 F25 and one at ISO L1.0 F29
 
puddleduck said:
Keep the D300 at ISO200...
Click to expand...


Im going to ask a real stupid question here....

When you say keep it at "ISO 200" so you mean have the "auto ISO" set at 200 or at ISO 200 (so it stays 200 regardless) :shrug:

As I have my ISO set at the "Auto" of 200 or have I totally confused myself with this....
 
Trig's said:
Im going to ask a real stupid question here....

When you say keep it at "ISO 200" so you mean have the "auto ISO" set at 200 or at ISO 200 (so it stays 200 regardless) :shrug:

As I have my ISO set at the "Auto" of 200 or have I totally confused myself with this....
Click to expand...

If you set your ISO to 200, ISO will only increase in Auto ISO mode if there is not enough light to "honour" your prefer aperture and shutter speed. It will never go past 200 (or whatever your explicitely set) otherwise.
 
Have a look at this:

http://www.dxomark.com/index.php/eng/Image-Quality-Database/Nikon/D300

Look at the ISO tab - you will see all about ISO and what its all about.

If you look at the dynamic range tab (which doesn't show anything less than ISO 200) you actually see that dynamic range is at the max at ISO200 and goes down as you up the ISO.

Its not a D300 problem, AFAIK they all do it.

But anyway, I just wanted to chuck into the discussion some points on dynamic range :D
 
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