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Olympus E-1 E-1 specific discussion.

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Old 16th July 2009
DaveC DaveC is offline
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ESP explanation

I have never been able to find much information about the ESP exposure system. Olympus seems to want to keep it a secret. In my manual they don't even explain what the letters mean.
What I have found is often contradictory. Does anybody know anything about ESP? Does it really compare back to stored images (as I have read) or is it merely an averaging system?

Many thanks, DaveC
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Old 16th July 2009
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Re: ESP explanation

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Originally Posted by DaveC View Post
I have never been able to find much information about the ESP exposure system. Olympus seems to want to keep it a secret. In my manual they don't even explain what the letters mean.
What I have found is often contradictory. Does anybody know anything about ESP? Does it really compare back to stored images (as I have read) or is it merely an averaging system?

Many thanks, DaveC
It doesn't have the images stored, just a 'look up table' that has been generated by Olympus from real images that maps different brightness levels in the zones of the image to the 'correct' exposure.

Andy
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Old 17th July 2009
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Re: ESP explanation

Thanks, that's part of the answer. Does anybody know does it read the scene differently or just use the centre-loaded method? I've seen something about 49 points.
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Old 17th July 2009
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Re: ESP explanation

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Originally Posted by DaveC View Post
Thanks, that's part of the answer. Does anybody know does it read the scene differently or just use the centre-loaded method? I've seen something about 49 points.
It splits the whole frame into 49 zones and then measures the brightness of each of the 49 zones and compares those against the look up table.

BTW, ESP = Electro Selective Pattern

Andy
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Old 17th July 2009
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Re: ESP explanation

I find for my type of photography I get more consistant results using center weigthed exposure.
I believe this meters on 60% of the field.
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