Playing Around With HDR (High Dynamic Range) Photography

Family life in Finland from kindergartens, child education, language schooling and everyday life. Share information and experiences. Network with other families.
Post Reply
User avatar
Xochiquetzal
Posts: 1400
Joined: Tue May 24, 2005 2:44 pm
Location: The 'poo!

Playing Around With HDR (High Dynamic Range) Photography

Post by Xochiquetzal » Sun Nov 19, 2006 9:21 pm

I did some HDR (High Dynamic Range) photography today. Summer is for my IR shots (I need lots of sun for Infra red filtering) and Winter is time to practice my HDR shots.

For those who don't know what HDR photography is, here's a cut and paste from Wikipedia:

High Dynamic Range imaging (HDRI) is a set of techniques that allow a far greater dynamic range of exposures (i.e. a large difference between light and dark areas) than normal digital imaging techniques. The intention of HDRI is to accurately represent the wide range of intensity levels found in real scenes ranging from direct sunlight to the deepest shadows.

These are only fair examples of the process and I'll practice it some more shortly. To do HDR, I tripod the camera and then bracket several photographs of the same scene, making 2-3 under and 2-3 over exposed. I combine them in photoshop using file-automate-merge to HDR. A bit of tone mapping later and I have an image with the HDR characteristics.

The images should all look like old fashioned 'postcards' - or just look different somehow.

In this image, you can see three people walking - it is actually only one, who moved across my bracketed images as I took them. This was the most successful of the lot for me.

Image

Image

Image

The above practice was for preparing myself to take interesting HDR shots with people/kids. So I tried a couple with my daughter and the "baldie whose bright shiney pate massacres the contrast on all my images'

This was the least interesting of the HDR images - Maia had moved a foot in the middle of bracketing the shots - so you can see a motion blur in there. This really lacks the HDR 'wow' factory. It almost looks like a low contrasty normal pic

Image



Playing Around With HDR (High Dynamic Range) Photography

Sponsor:

Finland Forum Ad-O-Matic
 

User avatar
karen
Posts: 3846
Joined: Thu Feb 24, 2005 8:17 am
Location: Espoo

Post by karen » Sun Nov 19, 2006 9:54 pm

I love that second picture. The top half looks like a haunted house and the bottom looks like a cozy cottage. I'd buy that postcard.

User avatar
Richard
Posts: 2679
Joined: Sun May 04, 2003 7:50 pm
Location: Near Kilo

Re: Playing Around With HDR (High Dynamic Range) Photography

Post by Richard » Sun Nov 19, 2006 10:08 pm

Xochiquetzal wrote:making 2-3 under and 2-3 over exposed.
I thought the usual method was 3 shots (1 under,1 normal and 1 over-exposed)

User avatar
Xochiquetzal
Posts: 1400
Joined: Tue May 24, 2005 2:44 pm
Location: The 'poo!

Re: Playing Around With HDR (High Dynamic Range) Photography

Post by Xochiquetzal » Sun Nov 19, 2006 10:59 pm

Richard wrote:
Xochiquetzal wrote:making 2-3 under and 2-3 over exposed.
I thought the usual method was 3 shots (1 under,1 normal and 1 over-exposed)
3 is the minimum. But you get a better range if you increase the number of shots to include further exposure differences.

User avatar
Xochiquetzal
Posts: 1400
Joined: Tue May 24, 2005 2:44 pm
Location: The 'poo!

Post by Xochiquetzal » Sun Nov 19, 2006 11:00 pm

This is the effect pushed to artistic interpretation from realistic. Photography purists, avert your eyes!

All of Villa Rullud in Espoo - just as the sun was setting today.

Image


The haloing is a byproduct of the HDR process.
Image

This one's really pushed to the limits:
Image


Post Reply