I want to do an HDR photo...

[ClickClick]

Not sure where to stick this question... I picked here. Please move it if it deserves a more appropiate forum.

Ok, basically I want to do a HDR pic but just want to see if I understand the concept.

It seems that what I need to do is :

1 - get my desired subject in focus
2 - if the camera evaluates the scene with apt 4.5 I would then go 2 stops down and take a series of 5 pics until I went from 2 stops down - 1 stop down - normal reading - 1 stop over - 2 stops over

Is that it? (I tried to simplify it there and be brief).

Or am I completely off track here?

[jacobsen1]

yeah, make sure when you change the exposure the aperture stays the same so the DOF doesn't change. Then once you're done load them into PS and have fun.

I have a tutorial written on HDRs:
http://www.newschoolofphotography.com/?p=19

[ClickClick]

yeah, make sure when you change the exposure the aperture stays the same so the DOF doesn't change. Then once you're done load them into PS and have fun.

I have a tutorial written on HDRs:
http://www.newschoolofphotography.com/?p=19


Hang on... need Cliff Notes (and starting to read your link right now)

Say I am doing a sunset, an old pier, and moving ocean. I choose f22 (just saying), put the camera in AV mode, let the camera meter the scene and memorize the exposure values it suggests (for this instance lets just pretend it is f22 3seconds) .

It would be something like (keep in mind I am just guessing here newbie that I am)

Picture 1 - f22 1 sec
Picture 2 - f22 2 sec
Picture 3 - f22 3 sec (the original reading)
Picture 4 - f22 4 sec
Picture 5 - f22 5 sec

Am I on the right track.

I know... you covered this in your link which I am now going to read. :)

[psyber_0ptix]

*subscribed*

[Twitch1977]

Picture 1 - f22 1 sec
Picture 2 - f22 2 sec
Picture 3 - f22 3 sec (the original reading)
Picture 4 - f22 4 sec
Picture 5 - f22 5 sec

Picture 1 - f22 .75 sec
Picture 2 - f22 1.5 sec
Picture 3 - f22 3 sec (the original reading)
Picture 4 - f22 6 sec
Picture 5 - f22 12 sec

I believe that would be correct if you're going in full stops.

*subscribed*

Thanks for the info!!!

Kurt

[ClickClick]

Picture 1 - f22 .75 sec
Picture 2 - f22 1.5 sec
Picture 3 - f22 3 sec (the original reading)
Picture 4 - f22 6 sec
Picture 5 - f22 12 sec

I believe that would be correct if you're going in full stops.



Kurt


Yeah, I was just throwing out the #'s there without looking them up. Just for the hypothical scenario.

I am going to try this type of photography tonight at home, that way I can try to blend in the inside lighting with the outside lighting coming in from the windows.

[jacobsen1]

use these settings:
Picture 1 - f22 .75 sec
Picture 2 - f22 1.5 sec
Picture 3 - f22 3 sec (the original reading)
Picture 4 - f22 6 sec
Picture 5 - f22 12 sec
as each stop is half/double the time, but yes. If you let the aperture change, then the DOF and what's in focus will change too. Sometimes this won't matter, but sometimes it can kill the shot. To be safe always set the aperture and adjust the time. The other issue you'll have is if there is anything moving in the shot (water/waves at the beach) they'll be in different positions in each shot. Sometimes that won't matter, other times it looks very weird. If you can do your first HDR with a static scene, then try water once you've got a few under your belt. They're not impossible, it's just an added challenge.

Here's an example:
http://www.benjacobsenphoto.com/main.php?g2_view=core.DownloadItem&g2_itemId=178&g2_serialNumber=2

[ClickClick]

I gotcha. I had an idea... I just needed it spelled out for me.

Many thanks in advance.

[mikep00]

Just so you know, it doesn't have to be 5 shots. It all depends on the range in the shot. Sometimes 3 shots does it, sometimes 5, sometimes 7, 9, etc.
If you captures enough exposures to cover the whole range you should end up with an HDR shot with a "normal" ie. bell histogram or pretty close, if you didn't take enough to capture the range you will end up with dips like you do in a normal histogram.
To be on the safe side i use 1/2 stops if I am in a situation I can't come back to later if needed. then with 1/2 stops I start at the proper exposure then keep increasing until my highest is a fully blown out shot, then repeat under until it is an almost black shot.
That way I know I have covered it all. I personally would rather take 11 exposures and only had needed 5, then take 5 and needed say 7. Especially when you find the perfect sunset, you can't exactly come back to it later when you convert it and see you needed more exposures.

[2005GLI]

i just tried creating an HDR image for the first time and use the 3 shots i took yesterday, But when combined the final shot was a bright tone of pink.

[psyber_0ptix]

Thanks for the info!!!

Kurt



sorry, i just wanted to tag this thread so i can reference it later, i am still learning and just heard of HDR so i imagine i would get some good information out of this thread (and make it easier to find).

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