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Author Topic: 5d3: HDR VS Multiple Expsosure vs AEB  (Read 13644 times)

Jamesy

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5d3: HDR VS Multiple Expsosure vs AEB
« on: August 30, 2012, 10:43:37 AM »
I have never done HDR with the exception of playing around with the in camera HDR functionality.

My question is I may take some shots this weekend that could benefit from HDR processing and was wondering if I could get some tips on the best approach. From what I can gather, the multiple exposure function is just that, it does not alter the exposure with subsequent frames.

I would think shooting bracketed with at least 3 frames would be best. Obviously I would shoot on a tripod.

- Is AEB bracketing the best approach?
- If so, what are the best settings (0,-,+)
- How many frames should I shoot of each scene?

Thank in advance.

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5d3: HDR VS Multiple Expsosure vs AEB
« on: August 30, 2012, 10:43:37 AM »

TrumpetPower!

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Re: 5d3: HDR VS Multiple Expsosure vs AEB
« Reply #1 on: August 30, 2012, 11:31:40 AM »
Use the built-in HDR. It does the bracket, saves the original images, and creates a not-awful JPEG preview for you. The preview is useful in the field to get an idea of whether or not you got the shot you wanted, but it's unlikely you'll want to use it for anything else. The only time AEB makes sense for HDR work is if you're shooting more than three frames. (There are uses for AEB other than HDR, but damned few -- and most of those would be better served by HDR anyway.)

How to process the image once you get back to the computer is a subject of much debate and taste. My own approach is to create masks with a big, soft brush; you're essentially creating your own custom-shaped graduated neutral density filter tailor-made for just that scene. Others like the surrealistic hyper-contrast look of tonemapping. What you go with is your problem.

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Jamesy

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Re: 5d3: HDR VS Multiple Expsosure vs AEB
« Reply #2 on: August 30, 2012, 11:54:15 AM »
Thanks for the insight.

So three frames should suffice then? These will more of a vacation snapshot type deal so simple is better.

This thread was more to gather info on camera operation rather than Post Processing techniques as there are numerous ways to accomplish the end result. That said, garbage in, garbage for the most part. If I capture a half decent sequence then I can drop it into my software of choice for the final image.

Jamesy

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Re: 5d3: HDR VS Multiple Expsosure vs AEB
« Reply #3 on: August 30, 2012, 01:27:59 PM »
Thanks for the pointers thus far.

If forgot to ask:
- Is it better to shoot M or Av? The 5D3 supports both HDR and AEB in both modes.
- Do you use mirror lock when shooting these scenes along with a remote shutter?

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Re: 5d3: HDR VS Multiple Expsosure vs AEB
« Reply #4 on: August 30, 2012, 01:29:51 PM »
The more room you give yourself, the better.  Depending on the scene, 3 exposures might not be enough.  Some scenes need many more than that.  Make sure you are shooting in raw and in manual.  The histogram is your friend, along with the high light alert.  If you have a lot of time, with a still subject, you begin by exposing the darkest exposure that the highlight alert just shows up with white flashing.  You then begin to systematically increase your exposure, using the shutter, not the aperture, by 1-2 stops each time.  After you take the shot, look at the histogram and when the left side of the histogram begins to go flat (i.e. there are no more vertical lines), you have captured most of the dynamic range of the scene.  This could be any number of exposures.  I have done this and have been very pleased with the results.  If your title is correct, you have a 5D mk III and that allows 7 frame AEB which I would recommend if you don't want to take the time for the above procedure as I said: the more range you give yourself, the better off you will be.  To give you some insight though, before I knew of the above technique, I used the AEB on my 7D with +,- 2 stops for this picture in Sandusky, OH.

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Re: 5d3: HDR VS Multiple Expsosure vs AEB
« Reply #5 on: August 30, 2012, 01:33:34 PM »
Thanks for the pointers thus far.

If forgot to ask:
- Is it better to shoot M or Av? The 5D3 supports both HDR and AEB in both modes.
- Do you use mirror lock when shooting these scenes along with a remote shutter?

I usually shoot Av, if for some reason the centered metered shot looks off then I shoot M.  Also I was playing around with doing it handheld (as opposed to tripoded), and Nik Software's HDR Effex for CS6 did a great job of aligning the images, even when I shot 9 images and intentionally moved the camera around a bit.  CS6 does not do as good of job natively in my experience of aligning the images, but others may differ with me on that.
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Jamesy

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Re: 5d3: HDR VS Multiple Expsosure vs AEB
« Reply #6 on: August 30, 2012, 02:26:43 PM »
I shoot in High speed, usually with a remote timer.
When you say High Speed you are referring to the 'Drive Mode' of 'High Speed Continuous'?

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Re: 5d3: HDR VS Multiple Expsosure vs AEB
« Reply #6 on: August 30, 2012, 02:26:43 PM »

K-amps

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Re: 5d3: HDR VS Multiple Expsosure vs AEB
« Reply #7 on: August 30, 2012, 04:22:25 PM »

If you want more than 3 shots, you may need to resort to Magic Lantern.

The OP has a 5D3, he can do 7 AEB brackets at +/-3EV. 

My preference is 3AEB +/- 3EV for handheld or moving subjects like leaves etc. 5AEB at +/-2EV for tripodded stuff. Extreme cases like shooting indoors with an open window, you might need 5AEB @ +/- 3EV.
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Re: 5d3: HDR VS Multiple Expsosure vs AEB
« Reply #8 on: August 30, 2012, 04:42:13 PM »
i don't do HDRs often, but if i do i prefer to do at least 5 shots.  I might not use all of them, but some are useless depending on the range of the scene.

There is no rule regarding a standard +/- bracket - it depends on your scene.  If the sun is setting behind some trees you might have to do +/- 2 or 3.  If the sun is bright in the sky, and lighting up the foreground you might be able to get away with +/- 2 or even 1.  My point is that it just really depends.  It also depends on what you focus on, because that will determine the 0 exposure.

So, my point is, try it at 5 or 7 shots to be safe, and just discard the ones you don't want.

You can process them in Photoshop HDR merge or Photomatix, NIK, etc., but my favorites are when you do them in PS and use luminosity masks and brushes to paint them in.  It avoids that uber HDR look, however, some people like that - so it's really up to you.
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Re: 5d3: HDR VS Multiple Expsosure vs AEB
« Reply #9 on: August 30, 2012, 06:17:02 PM »

If you want more than 3 shots, you may need to resort to Magic Lantern.

The OP has a 5D3, he can do 7 AEB brackets at +/-3EV. 

My preference is 3AEB +/- 3EV for handheld or moving subjects like leaves etc. 5AEB at +/-2EV for tripodded stuff. Extreme cases like shooting indoors with an open window, you might need 5AEB @ +/- 3EV.

The 5D3 goes well beyond +-3 EV, I routinely shoot +- 4 or 5 EV.  I can't recall how far you can go but it's beyond +-5.

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Re: 5d3: HDR VS Multiple Expsosure vs AEB
« Reply #10 on: August 30, 2012, 08:39:44 PM »

If you want more than 3 shots, you may need to resort to Magic Lantern.

The OP has a 5D3, he can do 7 AEB brackets at +/-3EV. 

My preference is 3AEB +/- 3EV for handheld or moving subjects like leaves etc. 5AEB at +/-2EV for tripodded stuff. Extreme cases like shooting indoors with an open window, you might need 5AEB @ +/- 3EV.

The 5D3 goes well beyond +-3 EV, I routinely shoot +- 4 or 5 EV.  I can't recall how far you can go but it's beyond +-5.

You Mean 7 AEB with +/- 3EV.  :)
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Jamesy

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Re: 5d3: HDR VS Multiple Expsosure vs AEB
« Reply #11 on: August 30, 2012, 10:36:43 PM »
You Mean 7 AEB with +/- 3EV.  :)
Does that mean a 21 stop dynamic range?

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Re: 5d3: HDR VS Multiple Expsosure vs AEB
« Reply #12 on: August 30, 2012, 10:46:37 PM »
You Mean 7 AEB with +/- 3EV.  :)
Does that mean a 21 stop dynamic range?

More like 18. Specifically. -9, -6, -3, 0, +3, +6, +9

but in 7 frames not 1.

I guess you could also use EC to expand this range to +/-5 or 28 stops in total, in 9 or 11 frames shot in 2 steps

Step 1: +/- 3 EV and -5 EC 7 AEB yields: -14, -11, -8, -5, -2, +1, +4 and then Step 2: setting the EC to +5 yields the following 7 AEB's   -4, -1, +2, +5, +8, +11, +14


I just realized I have never tried this on my 5D3... so this is just in "theory".  ;D
« Last Edit: August 30, 2012, 10:54:47 PM by K-amps »
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Re: 5d3: HDR VS Multiple Expsosure vs AEB
« Reply #12 on: August 30, 2012, 10:46:37 PM »

Jamesy

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Re: 5d3: HDR VS Multiple Expsosure vs AEB
« Reply #13 on: August 30, 2012, 10:53:39 PM »
Are they like this?
-9, -6, -3, 0, +3, +6, +9???

When I dial it in I can only see up to -8/+8 on each end of the scale.

K-amps

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Re: 5d3: HDR VS Multiple Expsosure vs AEB
« Reply #14 on: August 30, 2012, 10:55:25 PM »
Are they like this?
-9, -6, -3, 0, +3, +6, +9???

When I dial it in I can only see up to -8/+8 on each end of the scale.

Yes,

You see 8 because the screen/lcd is not wide enough. You can push it one more stop to +9/-9 though it doe snot show for the extreme 2 brackets, but the middle4 still move to show you you are pushing it beyond the edge... makes sense?
« Last Edit: August 30, 2012, 11:10:32 PM by K-amps »
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Re: 5d3: HDR VS Multiple Expsosure vs AEB
« Reply #14 on: August 30, 2012, 10:55:25 PM »