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Tuesday 22 May 2007

How To Make a HDR Image Using One Picture

This tutorial is very interesting and useful,
It is how to fake a HDR image using Photoshop and only one image! Easy to follow
with a good outcome/end product.


Fake HDR in Photoshop

Maybe you love photos which looks like painting, maybe you hate it. Anyway it can be useful to know, how to do it. This tutorial shows quite easy way to fake HDR photos in Photoshop. You don't need to shot into RAW or take photos with different exposure - one JPEG is enough. If you can work with masks in Photoshop, you have an advantage.


The most important is first step, it is base of HDR look made in Photoshop. Use command image > adjustment > shadow/highlight and set up values: shadows amount:50%, tonal width 45%, radius 44px; High-light amount 67%, tonal width 65%, radius 46px;



Duplicate layer "base" and set up its layer interaction to Color Dodge. This interaction gives picture strong colors and cause that light areas turn into pure white. In next step it will be repaired by another layer interaction.



Do the same thing as in the second step, but layer interaction is set up to Linear Burn now. You can see big black area in picture, it has to be elimated. Set up foreground color to black and use command select > color range, fuziness should be set to around 100. Now click on red marked icon, new layer mask will be added and black will disapear. There are some ugly artefacts in the picture, to remove them, click on layer mask and use gausian blur filter.



Fourth step is easy, it profits from third step. Just duplicate layer "linear Burn", set its interaction to Overlay, select layer mask and pres ctrl+i (invert). This interaction darken too much light shadows and raise contrast. Layers and its interactions are very powerfull tool in Photoshop.



Now it's time to adjust picture look, try to experiment with layer opacity. Optimal values are about 40% for layer "Overlay" and 55% for layer "Linear Burn".



Set up foreground color to white and use command select > color range with fuziness set up around 100. "Crawling ants" will appear around light areas. Duplicate "base" layer and move it up, then click on icon add layer mask. Select layer mask and soften it by gausian blur filter.



The last step colorize picture into red tones. Click on red marked icon and select from menu gradient map. This layer adjustment tools modify image colors according to defined gradient. There is a model gradient at the right border of picture. Load selection from layer mask of layer "light", invert it (select > invert) and click on add layer mask icon. Set up interaction of layer "colorize" to Hard light and finaly set opacity to 72%.



I use some other adjustmenst to achieve this look. For example I fill white areas by photoshop generated clouds - filter > render clouds.


Tutorial From: http://www.hdrphotos.net

5 comments:

Jay Nells said...

i dont understand the last step

Ashish said...

Please explain the last stept other wise this is a easy to understand HDR tech. Last point how to colorise the picture please explain each step so that one can implement it easily. Last stept is not clear.

Anonymous said...

Hi, thanks so much for this useful tutorial on HDR. I agree with the two previous post. Can you explain the last step simply and with details? Thanks

Anonymous said...

I love the technique, but don't understand that last step. Has anyone else worked out the problem?
Would love to have you post it if you have.

Unknown said...

Guys, as I understand the last step, the author created new layer with clouds (filter-render-clouds). You can see it on the last image - these clouds cover white areas so they don't look very white, but kind of grungy. Here the clouds were made with white and brownish colors, so befre creaing them just choose the white as foreground and brown as background color.

In order to show clouds only on the white areas of your image, go to select-color range. If your foreground color is white, you will select needed areas. Then just add layer mask to clouds. Also put the blending mode of clouds to "multiply", so that white clouds are hidden.

As for me, this technique did not really work with my image... Although it might be OK with other pictures. I'd like to see more tuts on how to make hdr from single photo.

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