K10d Multi-exposure mode

Started Aug 26, 2007 | Discussions
Bart Hickman Veteran Member • Posts: 7,256
K10d Multi-exposure mode

This is such a cool mode. I've been using it with auto EV adjust enabled so that it essentially becomes a handy way of averaging 2-9 successive shots together. Basically allows cheapskates like me to not have to carry an ND filter for this type of photography.

Here's a waterfall shot I took today (just a small creek near my house). It's 9 shots each 1s shutter for a total of 9s (K10d combines them into a single RAW.) I could never get 9s in this situation w/o an ND filter or w/o getting up at 7am when the light is low.

A few minutes later, the sun came out and I took 9 more at 1/5s each ( 2s total). I took two of these sets at different exposures so I could do an HDR to control the highlights. Decent water smoothing just wouldn't be possible in this light w/o this feature (1/5s isn't enough to give good water smoothing).

Added bonus because of the averaging of 9 images, I can boost shadows like crazy without seeing any noise or VPN.

Anyway, just an FYI for those who haven't explored this feature yet. It basically provides another 3 stops of working range for moving water photography.

Bart
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MightyMike Forum Pro • Posts: 36,563
Re: K10d Multi-exposure mode

Hey thanks for the tip, i've been wondering where to use that feature
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crocau Regular Member • Posts: 179
great tip

and what a great shot (#1)

LaRee Forum Pro • Posts: 19,941
Re: K10d Multi-exposure mode

That is a good idea Bart thanks for the tip. I like the results of the first shot. I would have never thought of this application for that feature on the k10d. Thanks!
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Sinnettc
Sinnettc Veteran Member • Posts: 4,511
Re: K10d Multi-exposure mode

Ok, THIS makes sense. I've not had any luck with it for anything else.

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philzucker
philzucker Veteran Member • Posts: 8,387
Re: K10d Multi-exposure mode

Creative as ever, Bart! Excellent thinking - and nice example. Thanks very much for sharing pics & technique!

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James Mess Contributing Member • Posts: 579
Re: K10d Multi-exposure mode

Up there for using the brain mate. Excellent idea! I'll admit that I had never thought of using this mode for those situations. I'm definitely going to have to try it now!

threadster Regular Member • Posts: 259
I'm confused...

... So accurately exposing the same scene 9 times does not result in a totally white frame? huh.

It "averages" the separate exposures? Interesting. I did now know it worked that way!

Has this been discussed in the forum before? I'll have to try a search to learn a little more.

Thanks!
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Bart Hickman OP Veteran Member • Posts: 7,256
Depends on auto EV adjust setting...

threadster wrote:

... So accurately exposing the same scene 9 times does not result in
a totally white frame? huh.

It "averages" the separate exposures? Interesting. I did now know
it worked that way!

If you shut off auto EV adjust (which is the default), then it works like the classic multi-exposure in a film camera and, yes, the resulting image would be nearly white. However, with EV comp adjust enabled, it averages them together so the final exposure is the same as the individual exposures.

You could do this w/o this feature and instead take 9 photos and average them together in photoshop. But it takes 5-10 minutes to do this (find the images and merge them in photoshop) and if you do a lot of shots, this time will add up. So it's really convenient to have just the single RAW in the camera to start with, plus I can see the results out in the field.

Has this been discussed in the forum before? I'll have to try a
search to learn a little more.

I've seen this feature discussed--I don't know if this application was discussed.

Bart
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threadster Regular Member • Posts: 259
Thanks

Very cool and a great explanation.

Thanks!
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*isteve Veteran Member • Posts: 9,509
Re: K10d Multi-exposure mode

Great idea - can you combine this with exposure bracketing to get HDR shots automagically or does auto EV make them all come out the same?
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Bart Hickman OP Veteran Member • Posts: 7,256
Re: K10d Multi-exposure mode

*isteve wrote:

Great idea - can you combine this with exposure bracketing to get HDR
shots automagically or does auto EV make them all come out the same?

No. The two features are mutually exclusive. To do HDR, you'll have to move the exposure parameters yourself. Keep in mind that because of the averaging, you get some extra DR in the shadows (should be 3 stops extra with 8x multi-exposure).

Bart
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guyv Contributing Member • Posts: 847
Re: Depends on auto EV adjust setting...

Wonderful, many thanks for this tip! I can't wait to use it.

I notice the leaves are not as sharp in the second shot so I am guessing there was no wind in the first shot and some wind in the second shot?

Guy

Bart Hickman OP Veteran Member • Posts: 7,256
Re: Depends on auto EV adjust setting...

guyv wrote:

Wonderful, many thanks for this tip! I can't wait to use it.

I notice the leaves are not as sharp in the second shot so I am
guessing there was no wind in the first shot and some wind in the
second shot?

Yes, that blur is caused by light wind.

Bart
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David Oswald Senior Member • Posts: 1,190
Re: K10d Multi-exposure mode

This supports an earlier notion that I had; the multi-exposure mode might come in handy for lightning, and maybe even fireworks or star trails. Or how about for traffic on I-405 at night (recording the lights streaking by). Combining several long-ish exposures could achieve an interesting effect. I guess I'll have to go experimenting.

allreddv Regular Member • Posts: 173
Re: K10d Multi-exposure mode

Cool pic and post could you detail how you did it. I didn't even know it was a possibility. Also what is an ND filter?

Bart Hickman OP Veteran Member • Posts: 7,256
Here's putting it to good use...

...along with my new tripod (Manfrotto 725B). We took our weekend walk in the Columbia River Gorge this afternoon--went to Ponytail falls. These shots are so silky smooth from the in-camera averaging it's amazing (you can boost shadows all day long.) It's like having something like ISO12. What a sweet setup--I love this camera.

17mm, f/16, 14s total (2s x 7), circular polarizer

17mm, f/16, 14s total (2s x 7), circular polarizer. 2 shot composite so the FOV is wider than 17mm.

17mm, f/16, 11.2s total (1.6s x 7), circular polarizer. 2 shot composite so the FOV is wider than 17mm.

Bart
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wjwncpro_Ds Veteran Member • Posts: 3,984
Re: Here's putting it to good use...

Great shots Bart and you have a good handle on that Multi-exp. We were just discussing this a few days ago and I had used that technique many years ago with 35mm. Try taking pics of flowing water and putting different colored gelatin filters in front of the lens in between pics.
Thanks for sharing your technique and great pics...

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hamidlmt Senior Member • Posts: 2,269
Re: Here's putting it to good use...

Wow.... what a keen technique. I just took some falling water shots today, but had no clue that this could be done! I will be fiddling with my camera tomorrow, for sure!

chris gunn Veteran Member • Posts: 8,097
Lookin good!

Bart Hickman wrote:

falls. These shots are so silky smooth from the in-camera averaging
it's amazing (you can boost shadows all day long.) It's like having
something like ISO12. What a sweet setup--I love this camera.

Inspring words and pics!

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