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Author Photography tip from Ross: learn digital exposure
Steve
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Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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25th Nov 06 at 17:55   View Garage View User's Profile U2U Member Reply With Quote
when you take a picture do you check the histogram for the light distribution. the far left is the shadows, the center is the mid tones and the far right is the highlights. Digital cameras don't have the dynamic range of film and getting gooes noise free images with a nice spread of tones is not as easy compared to film. To combat this we should expose to the right but not so far as to blow out the highlights (your LCD should flash when you check the histogram to show you blown out highlights) and then pull back the levels in RAW. this produces a smoother sharper noise free image.

two pictures, one exposed to the right of the histogram and the exposure pulled back in raw and the other normally exposed. both have been sharpened smart sharpen 100 1.0. its not a perfect test but you'll get the idea.

over


normal












[Edited on 25-11-2006 by Steve]

[Edited on 25-11-2006 by Steve]
Robin
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Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
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25th Nov 06 at 18:16   View Garage View User's Profile U2U Member Reply With Quote
I'm lost.

I don't understand any of that. What does 'pull back the levels or RAW' mean
liamC
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Registered: 28th Feb 04
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25th Nov 06 at 19:09   View User's Profile U2U Member Reply With Quote
What's Vibrio banned for?
Simon
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Location: Oxfordshire
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25th Nov 06 at 20:40   View User's Profile U2U Member Reply With Quote
He's assumed people are using DSLR cameras, RAW files are what they can produce and are very large files which contain a lot more information in them than a Jpeg will. Using Raw means you can adjust the photo a lot more through brightness levels etc.

I think thats it anyway
Robin
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Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
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25th Nov 06 at 20:50   View Garage View User's Profile U2U Member Reply With Quote
aaah.

maybe I should buy a DSLR then.
Steve
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Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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25th Nov 06 at 22:50   View Garage View User's Profile U2U Member Reply With Quote
ross has some shit ornaments in his garden, that cat looks constipated
Simon
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Location: Oxfordshire
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26th Nov 06 at 00:26   View User's Profile U2U Member Reply With Quote
the cat looks like it was painted by a four year old using a banana instead of a paintbrush

 
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