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Wintermute
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« on: July 13, 2008, 01:35:34 PM »

Weir



http://www.lightartforum.com/index.php?action=gallery;sa=view;id=454

The weir on the river Clyde, also taken in Glasgow Green.

This is 3 exposures taken on aperture priority (-1.0 ev, 0.0 ev and +1ev) and then combined together in Photomatix.  Then I twiddled the settings to produce the tone-mapped version of the HDR image and voilla.
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« Reply #1 on: July 13, 2008, 03:02:14 PM »

I have a book called HDRI handbook.  It says that when shooting for a HDR composite, NEVER adjust the exposure on teh camera, because that adjust time & shutter speed.  Go to Manual mode, set the exposure, and chenge the LENGTH of exposure.  It says you will get better results.

Give it a try next time.

I haven't done any HDR yet because my computer is not up to it, but I'm working on that! Wink
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« Reply #2 on: July 13, 2008, 03:29:18 PM »

if you put it on programme mode that'd be right, but on the nikon, leaving the camera on aperture priority means when you change the exposure compensation it keeps the same aperture and adjusts the shutter only.  The first ones I made were a bit ropey because all 3 shots had different depth of field- nightmare.
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Dale
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« Reply #3 on: July 14, 2008, 04:00:31 AM »

Lovely colours in this pic.  Smiley

We are in Scotland, though I'm originally from South Wales.
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« Reply #4 on: July 14, 2008, 04:32:42 AM »

Your forgiven on both counts Dale!!!  Cheesy! Damn! There goes that thin veneer or respectability that us Aussies are supposed to have!!!  Cheesy Cheesy Wink
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« Reply #5 on: July 14, 2008, 10:26:47 AM »

Your forgiven on both counts Dale!!! 

Steady young man.  Wink   Cheesy
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« Reply #6 on: July 14, 2008, 05:25:58 PM »

A very colourful HDR image, Have you tried processing it B/W? I bet it will look great then too.

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« Reply #7 on: July 14, 2008, 11:10:27 PM »

Great colours and reflection. nice effort.
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« Reply #8 on: July 15, 2008, 01:31:20 AM »

Love the colours in this. The only fault (and I have this problem, too when I bracket 3 images) is the noise in the dark shadows.

I'm not sure if using more exposures will solve this problem in Photomatix or increase the noise. Would be very interested at what others may have found.
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« Reply #9 on: July 15, 2008, 04:24:01 AM »

Your forgiven on both counts Dale!!! 

Steady young man.  Wink   Cheesy

Young man ?? that is the nicest thing anyone (Cher aside) has said to me in a long time!!! As long as it isn't gentleman!!  Wink Cheesy Cheesy
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« Reply #10 on: July 31, 2008, 06:53:16 AM »

I think the answer here is the two stop gap between exposures over the three images.
If your camera has smaller increments I'd probably drop the over-exposure value to +0.5, as there is also a bit of posteris(z)ation.
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