RetouchPRO

Go Back   RetouchPRO > Technique > HDR, Panoramas and Tone Mapping
Register Blogs FAQ Site Nav Search Today's Posts Mark Forums Read


HDR, Panoramas and Tone Mapping Merging several different exposures into a single image

Why HDR with samples

Reply
 
Thread Tools
  #1  
Old 11-12-2007, 11:49 PM
crazyfly1's Avatar
crazyfly1 crazyfly1 is offline
Senior Member
 
Join Date: Jan 2007
Location: Colorado Springs Co. USA
Posts: 733
Why HDR with samples

CJ Swartz posted a good definition of what HDR means.

I want to try to post a couple of visual examples of what it does. I will post three images. One a regular image captured and saved in camera as a jpeg. One from an HDR image made up of the first picture and another one both taken on a tripod with exposure bracketing. I only used 2 images, you can use 3, consensus is that more is overkill.
The procedure with both images was exactly the same; bring into Photoshop, drop all color out with HS slider, auto color. That's it.
The third image is the color HDR. I uploaded the two in BW so that you can see the difference in tonal ranges between the two. Your monitor cannot show you all of them and that's part of why the full color probably looks way oversaturated with blown highlights.
The HDR is the one I marked up.
You'll see in the HDR black and white image that there is much more detail shading between black and white and that black and white seem to have magically gotten farther apart (greater dynamic range.) The links are below and I posted the full size files so if you have dial-up now is a good time for coffee.
On a side note, don't know if everyone knows this; most sites resize images for screen sizes, if you click on the little square at the lower right corner of the picture (it will appear when you mouse over it) it will take the image to actual size.
Hope this is usefull, and thanks for looking.

(BTW CJ, about animals sitting still- John Audubon (like in Audubon Society) drew thousands of birds, every one of which he hunted and killed first )


http://aycu03.webshots.com/image/341...1478611_rs.jpg

http://aycu18.webshots.com/image/327...7608686_rs.jpg

http://aycu15.webshots.com/image/333...2744530_rs.jpg
Reply With Quote top
  #2  
Old 11-13-2007, 12:39 AM
CJ Swartz's Avatar
CJ Swartz CJ Swartz is offline
Senior Member
 
Join Date: Sep 2001
Location: Metro Phoenix area, Arizona
Posts: 3,345
Blog Entries: 19
Re: Why HDR with samples

Quote:
Originally Posted by crazyfly1 View Post

(BTW CJ, about animals sitting still- John Audubon (like in Audubon Society) drew thousands of birds, every one of which he hunted and killed first )
Crazyfly1, I hope you're not suggesting I do the same?

Thanks to you and Doug, we now have a new forum dedicated to the study and sharing of HDRI / tonemapping information. I've been busy with work, and haven't given enough time to following your links etc. yet, but thank you for giving us a start.
Reply With Quote top
Reply

  RetouchPRO > Technique > HDR, Panoramas and Tone Mapping


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
HDR - ( High Dynamic Range ) Images CJ Swartz HDR, Panoramas and Tone Mapping 6 11-12-2007 04:40 PM
Hdr!! 1STLITE HDR, Panoramas and Tone Mapping 15 07-23-2007 10:38 PM
HDR, Mr.Hill and PWL digikunst HDR, Panoramas and Tone Mapping 2 03-01-2007 05:59 PM
HDR Software Question... bob2 HDR, Panoramas and Tone Mapping 1 10-12-2006 09:12 PM
Rube Goldberg HDR Doug Nelson HDR, Panoramas and Tone Mapping 7 09-10-2006 05:48 PM


All times are GMT -6. The time now is 11:14 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
SEO by vBSEO ©2011, Crawlability, Inc.
Copyright © 2016 Doug Nelson. All Rights Reserved