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DPChallenge Forums >> Current Challenge >> 24 Hour HDR challenge..... Oooooooooh here we go!
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Showing posts 26 - 50 of 142, (reverse)
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11/12/2006 01:24:01 AM · #26
Originally posted by stare_at_the_sun:

No luck for us CS users eh?

Am I allowed to fake HDR through the use of layers and erasing?


I'd assume so. Couldn't very well make it a CS2 only challenge.
11/12/2006 01:25:28 AM · #27
Good luck to all shooters, I'm gonna skip this one!
11/12/2006 01:30:13 AM · #28
Awwww, how about making it a 48-hour challenge?

Rollover is 6pm in NZ so I won't be home from work with a shot by then :(
11/12/2006 01:50:29 AM · #29
What a bummer....I took this at a Veteran's Day car show. Would this processing be appropriate for this challenge? (A weak attempt at getting comments on this shot I know, but I did try to do some HDR editing to this.)


Message edited by author 2006-11-12 01:50:49.
11/12/2006 02:19:01 AM · #30
What is HDR?
11/12/2006 02:29:19 AM · #31
okay...I googled HDR. Still don't get it. Can sombody pleeeease explain in in layman's terms???
11/12/2006 02:35:21 AM · #32
jeez louise, couldn't you give us a week? those of us without them cute little hdr buttons have a lotta 'sperimenting to do.
11/12/2006 03:08:10 AM · #33

24 hour challenge for this is just great for those who have a few thousand hours behind them playing with this technique. My progress w/a few attempts has been slow and success especially with the cs2 program has been pretty frustrating. I often encounter this little error message especially when trying to work from a single file x multiples, am still not sure why I get this, (can't tell if stripping exif helps or not) but manipulation of EV setting sometimes helps as the following link suggests.

can help explain this error message in cs2

11/12/2006 03:23:49 AM · #34
Well I don't see how voters can tell you used HDR so my advice is to just enter a well exposed photo and you're fine. The key thing is to have a strong tonal range with details in the highlights midtones and shadows. However you acheive that should be enough. The extra rules don't say you have to use more than one capture.

Message edited by author 2006-11-12 03:25:35.
11/12/2006 03:31:24 AM · #35
I've been wanting to try HDR... but 24 hrs doesn't give much time for a first attempt. Ah well, I can always try it just to learn, right? :D
11/12/2006 03:38:55 AM · #36
To Blue Moon

Read all about it:

//www.hdrsoft.com/resources/dri.html

Message edited by author 2006-11-12 03:39:15.
11/12/2006 03:54:07 AM · #37
HDR Explained

//www.luminous-landscape.com/tutorials/hdr.shtml

for all those asking what is HDR. I think the above link will be of help
11/12/2006 03:54:20 AM · #38
Originally posted by aerogurl:

//infinitisimo.typepad.com/hdr101/


I had no clue of HDR before reading the HDR101 tutorial. This is a good link and even has a link to download a free trial version of Photomatix, a program that does the picture melding.
To anyone still stumped this is my simplified explaination -
HDR is: taking several shots of the exact same scene (camera firmly on tripod) with only the difference of exposure setting (like bracketting). Then the pics are loaded into the program that can meld the shots. This is used for scenes with high contrast like waterfalls and bright backgrounds. Often when the lightsource is behind your subject. Say your foreground would be too dark if your ISO is 1/250 to keep the sky from being blown out, or vise versa - sky blown out at 1/60 in order to capture a decently exposed foreground or indoors.
A well exposed photograph will have a touch of visible detail or texture in it's brightest and darkest areas. So many circumstances we wish to shoot make this impossible. HDR seems to make this possible. The recent blue ribbon called Water Colors by nshapiro is a good example of a scene that would be high contrast. Don't know what was done to achieve this, but excellent example.
Please feel free to correct me or add on as needed, those of you who have actually done this...! :/

ps, I do wish this was a 48hr challenge since so many of us are just learning and could use the time to actually try. And sunset is an ideal time to get the shots, which leaves only 3hrs till posing for us US west coasters. And thanks for making this a challenge, I may not have discovered it anytime soon otherwise...?

-bea
11/12/2006 04:38:52 AM · #39
Originally posted by undieyatch:

24 hour challenge for this is just great for those who have a few thousand hours behind them playing with this technique. My progress w/a few attempts has been slow and success especially with the cs2 program has been pretty frustrating. I often encounter this little error message especially when trying to work from a single file x multiples, am still not sure why I get this, (can't tell if stripping exif helps or not) but manipulation of EV setting sometimes helps as the following link suggests.

can help explain this error message in cs2


Happens to me also, gave up trying after that:(
11/12/2006 04:40:52 AM · #40
Originally posted by undieyatch:

24 hour challenge for this is just great for those who have a few thousand hours behind them playing with this technique. My progress w/a few attempts has been slow and success especially with the cs2 program has been pretty frustrating. I often encounter this little error message especially when trying to work from a single file x multiples, am still not sure why I get this, (can't tell if stripping exif helps or not) but manipulation of EV setting sometimes helps as the following link suggests.

can help explain this error message in cs2


When I first played with HDR I would get this message all of the time and it frustrated me because I was adjusting the exposure.

What this means is the computer is looking at all of the files and thinks the exposure value is either all the same or too close in order to make an HDR image.

Now what I would guess you did was open a RAW image and process it multiple times with different exposure values in an attempt to create the HDR and it keeps kicking this error back to you. That is what was happening to me!

So, here is how you fix it. Open the images in RAW, process the image with different exposure vaules, then, here is the trick, use the Save For Web command. doing this strips the photo of its exif data and the computer doesn't know what to do with the images when you covert to HDR. Then run the HDR automation and use all of the images you saved for web. When I do this I title all of the pictures HDR1, HDR2, blah blah blah, this allows me to remember the next step.

A window will pop up and ask you to set the exposure values manually. remember what picture you are using and you can input the exposure companesation that you introduced during the RAW conversion. Enter all of the vaules and click ok....

Hope this helps
~benjamin
11/12/2006 04:42:01 AM · #41
So what its just High contrast bright colors? ...stupid...
11/12/2006 04:47:26 AM · #42
Originally posted by xXxscarletxXx:

So what its just High contrast bright colors? ...stupid...


I have to disagree...when done right it really helps you see ALL the tones, colors and details from bright to dark and keeps stuff from being under or over exposed, see some of the other threads lately and look at their before and after images.

I didn't see the big deal until recently and am really hoping to get in on this challenge...too bad I don't get my camera back for probably another 13 hours :( will have to see what I can do.

Message edited by author 2006-11-12 04:49:49.
11/12/2006 04:50:42 AM · #43
Hey if I placed the my camera on a tripod some where >.> and used the timer and take several pics of me in different spots but the same scene and mash them all together... would that be legal? and use the bracketing thing and all that jazz?

Message edited by author 2006-11-12 05:02:03.
11/12/2006 05:00:06 AM · #44
I don't really understand this technique. Beaflies explains it pretty well though. Can you use different pictures and combine them?
11/12/2006 05:05:04 AM · #45
A link I saved, meant to try this, looks good and niely detailed

How to Create Professional HDR Images
11/12/2006 05:08:53 AM · #46
Originally posted by xXxscarletxXx:

So what its just High contrast bright colors? ...stupid...

The point of HDR is to combine multiple exposures to generate a shot that has more dynamic range than would normally be possible to capture with a camera. You now have detail in areas that would be burnt highlights or inky black shadows.

Here's an example of mine that I did yesterday:



In this shot I would have either had to expose for the sky, crushing the road into the shadows or expose for the road, completely burning the highlights in the sky. With HDR I can get detail in both regions.
11/12/2006 05:22:34 AM · #47
Originally posted by Raziel:

Originally posted by xXxscarletxXx:

So what its just High contrast bright colors? ...stupid...

The point of HDR is to combine multiple exposures to generate a shot that has more dynamic range than would normally be possible to capture with a camera. You now have detail in areas that would be burnt highlights or inky black shadows.

Here's an example of mine that I did yesterday:



In this shot I would have either had to expose for the sky, crushing the road into the shadows or expose for the road, completely burning the highlights in the sky. With HDR I can get detail in both regions.


Gorgeous example! You can also see ghosts of cars which is what you would likely get if you posed in different spots each exposure.
This link shows the significance with before and after shots. It also has a link to more examples that are incredible if not intimidating. HDR examples
11/12/2006 05:54:47 AM · #48
ooohh never had looked at the bracketing modes of my D200
automatically bracket 3,5,7,9 SHOTS (0 & +/- 1,2,3,4 EV)
i just need a subject ;)
11/12/2006 06:02:35 AM · #49
Originally posted by beaflies:

Originally posted by Raziel:

Originally posted by xXxscarletxXx:

So what its just High contrast bright colors? ...stupid...

The point of HDR is to combine multiple exposures to generate a shot that has more dynamic range than would normally be possible to capture with a camera. You now have detail in areas that would be burnt highlights or inky black shadows.

Here's an example of mine that I did yesterday:



In this shot I would have either had to expose for the sky, crushing the road into the shadows or expose for the road, completely burning the highlights in the sky. With HDR I can get detail in both regions.


Gorgeous example! You can also see ghosts of cars which is what you would likely get if you posed in different spots each exposure.
This link shows the significance with before and after shots. It also has a link to more examples that are incredible if not intimidating. HDR examples


I actually like the translucent cars. Since this was a 9 shot sequence shot from a bridge overlooking a highway the only way to avoid the ghost cars would be to shoot a single exposure and make a HDR from three seperate RAW conversion (not possible with my camera though). The RAW converted version would however lack the dynamic range possible with the multiple exposure version. The shots were spaced a full stop apart, so I gain much more dynamic range than would be possible with RAW.
11/12/2006 06:50:09 AM · #50
This challenge just HAD to happen didn't it........*pauses*

YEEEEEEEEEEEHAAAAAAAAAAAAAAA!!!!!! gonna LOVE Voting on this one
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