MasDom



11 comments so far...

MasDom October 22, 2007, 07:03 AM
Hi,

I made this shot with GIMP. And applied a HDR. What do you think? Do the buildings 'glow' to much?

Cheers

MasDom

Dom_W October 22, 2007, 06:20 PM
There's a fairly obvious halo around the spire - looks like there's the same around the modern high-rise as well, but it's not as obvious.

I think it either needs the perspective messing around with, or slight rotation - the only thing that's roughly in true vertical is the left hand edge of the high-rise.

Also would probably try to deepen the sky a little.

Otherwise a pleasing image (trying to avoid 'nice shot'!), I like the general composition and love the colours on the church.

MasDom October 22, 2007, 06:32 PM
Thx,

what do you mean with deepen the sky?

Rolf Steinort October 22, 2007, 07:26 PM
deepen the sky = getting it more blue? A bit darker? That would be a good idea.

I think Dom is right with the verticals in the image. Just pull the lines out of the ruler on the left side.

The HDR effect is not jumping into the eye - for me a sign that it is well done. The halos are not nice, perhaps you can adjust your masks a bit.

Dom_W October 22, 2007, 07:27 PM
Either put a 'ND grad' style effect on it to darken it down, and/or make it a bit darker/deeper/"bluer" rather than the more cyan colour at the moment.
littletank October 23, 2007, 02:11 PM
I am ignorant, what does HDR mean, please, and how is it applied?
MasDom October 24, 2007, 05:31 AM
HDR means High dynamic range. You basically use 3 pictures with different exposures and then combine them into one. For example you take a picture with normal exposure, one with exposure -1 and one with +1. Then you need a program or in my case a script to combine this into one picture where you take the +1 data for example for the otherwise underexposed areas in the picture.
Because I am a lazy person I made 3 raw conversions.

Correct me if I'm wrong but I also think you need a deeper color space for HDR (more than 8 bit). So this would technically be an exposure blending.

Hope I could help

MasDom

littletank October 24, 2007, 04:50 PM
Thank you, I now understand what you are doing. Does this tecnique have any practical applications?
MasDom October 25, 2007, 06:39 PM
Well, yes of course.
Imagine you are inside a building and wanna take a picture including a window. Normally you could expose for the inside -> Window completely overexposed. Or you could expose for the window. Inside black.
Wouldn't it be nice if you could have a good exposure for both?
Basically you increase the dynaic range you are able to shoot.

MasDom

MasDom October 25, 2007, 06:41 PM
b/t/w How do you guys think I should adjust the verticals? Which tool I mean.
Rolf Steinort October 26, 2007, 10:51 AM
Rotate to get the center vertical vertical. Then perhaps the perspective tool to get the falling lines on the side a bit more straight, but not vertical. One expects falling lines in such a picture - getting rid of them fully looks unnatural in most cases.
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