Bracketed photos for HDR
John Meiers
"Which of my photographs is my favorite? The one I am going to take tomorrow" - Imogen Cunningham
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#1. "RE: Bracketed photos for HDR" | In response to Reply # 0
jrp Charter MemberTue 25-Apr-17 03:26 AMYes. HDR bracketed shots should be made on Aperture priority mode for the reason you said.
As for number of shots in the sequence, with one EV step, some do 3, others 5. I do 7, following the advice of Nikonian Larry Anderson (mnbuilder49) as shown hereHave a great time! 😉
JRP
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#2. "RE: Bracketed photos for HDR" | In response to Reply # 0
walkerr Registered since 05th May 2002Tue 25-Apr-17 07:27 AM | edited Tue 25-Apr-17 08:31 AM by walkerrAs JRP mentions, you want to keep the aperture fixed and let the shutter speed vary. The minimum amount depends a bit on the program, as well as the dynamic range of the scene. Most programs prefer having at least three images, although Lightroom's HDR function can get by just fine with two. I normally shoot either three or five exposures in increments of two stops, but it really depends on how wide the brightness range is from dark to light. Also, not every camera can do two-stop increments; some are limited to one-stop increments, so you have to shoot more exposures with those cameras. Once you have covered the range adequately, having more exposures just slows down your processing A factor in this is your camera as well. An older camera like a D2X will need more exposures to capture the range of a scene than a D810. You may not even need HDR to capture a scene's range with a D810, for example.
Most HDR programs will even work with a single image, but in that case it's more about using the program for a stylized look rather than extending the dynamic range of a scene.Rick Walker
My photos:
GeoVista Photography-
#3. "RE: Bracketed photos for HDR" | In response to Reply # 2
Dakotaboy Nikonian since 06th Sep 2014Tue 25-Apr-17 01:33 PMThank you gentlemen for the helpful information.John Meiers
"Which of my photographs is my favorite? The one I am going to take tomorrow" - Imogen Cunningham
Visit my Nikonians gallery.-
#4. "RE: Bracketed photos for HDR" | In response to Reply # 3
Dakotaboy Nikonian since 06th Sep 2014Fri 28-Apr-17 01:14 AMBack with a question about shooting photos for HDR. It is my understanding for shooting photos to do HDR you go with a series of photos that range from exposing for the sky just to the point of not getting the "blinkies" to the point of exposing for the ground. It seems to me that it would be better to shoot a series of single shots then trying to figure out the bracketing function exposure to cover this amount of dynamic range.
Also if one exposes for the ground, when shooting a series of photos for HDR, would it not create an overexposed effect on the sky? Is this all supposed to balance out during HDR pp? Maybe I am not on the right track here.John Meiers
"Which of my photographs is my favorite? The one I am going to take tomorrow" - Imogen Cunningham
Visit my Nikonians gallery.-
#5. "RE: Bracketed photos for HDR" | In response to Reply # 4
walkerr Registered since 05th May 2002Fri 28-Apr-17 01:29 AMWhen you do an HDR bracket, you'll typically get images that range from what look very dark to very bright. There will be images with completely blocked up shadows and completely blown skies. That's okay. The HDR algorithms handle that. What you ideally want to have is your darkest shot's histogram to have no highlight clipping and your brightest shot to show no shadow clipping. Ideally, you'll have a little bit of a gap at the ends of those histograms.
It's not hard to do this in practice. You don't have to do a bunch of calculations. You can just shoot a quick sequence of shots, take a look at the brightest and darkest shots, and then add to or reduce the number of images you make. This takes only seconds. After that, just keep track of the overall light and adjust the exposure accordingly, either manually or automatically. Periodically check to make sure your dark and light histograms are okay. After you've done this a few times, you'll be able to just look at a scene and make a good guess about how to set your bracketing.
Regarding intervals, most HDR software likes evenly spaced intervals and some will even "complain" if you don't do that. The LR/ACR HDR feature is less picky about that and has the side benefit of producing a new raw file that can be adjusted using the normal controls. That makes it very easy to use and the results look very natural. It's not good for stylized images, but I'm not a fan of that look.Rick Walker
My photos:
GeoVista Photography-
#6. "RE: Bracketed photos for HDR" | In response to Reply # 5
blw Nikonian since 18th Jun 2004Fri 28-Apr-17 06:21 AM> It's not hard to do this in practice.
Agreed. I rarely bother with a calculation, and in fact I normally don't even bother with chimping the histogram. I just shoot 5, knowing that if I only need 3, I have plenty of space on the cards and computer for the overhead. If the DR is particularly great, I might do 7.
> Lr ... very easy to use and the results look very natural.
Yep, and that's one reason why I don't mind doing HDR instead of GNDs. If I got that stylized look, I'd be back to the filters very quickly, but so far nobody's "caught" me cheating by using HDR rather than $500 worth of filters._____
Brian...-
#7. "RE: Bracketed photos for HDR" | In response to Reply # 6
coolmom42 Nikonian since 30th Nov 2011Fri 28-Apr-17 08:11 AM>> It's not hard to do this in practice.
>
>Agreed. I rarely bother with a calculation, and in fact I
>normally don't even bother with chimping the histogram. I
>just shoot 5, knowing that if I only need 3, I have plenty of
>space on the cards and computer for the overhead. If the DR
>is particularly great, I might do 7.
>
>> Lr ... very easy to use and the results look very
>natural.
>
>Yep, and that's one reason why I don't mind doing HDR instead
>of GNDs. If I got that stylized look, I'd be back to the
>filters very quickly, but so far nobody's "caught"
>me cheating by using HDR rather than $500 worth of filters.
This is good info... I need to get out and do some work with this.Nikonian since 2011
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