Long exposure without an ND filter


Pentaxophile

Link Posted 14/05/2018 - 09:42
I came across this technique while looking for a workaround to use with my Samyang 14mm. I can't afford a 150mm filter system, so this looks like it might be worth playing with.

It's a technique that's also used for star trails. You take multiple exposures and blend them. Say you have 10 x 3-second exposures, that's a 30 second long exposure shot after blending. If your camera has multiple exposure mode, it can all be done in camera. If you want to go beyond ten shots, you could use the intervalometer and process them yourself.

https://www.slrlounge.com/long-exposure-photography-without-using-a-filter/

Wouldn't it be nice if this could be automated as a mode in your camera? You could tell it the length of exposure you wanted, and then it could calculate and fire off the number of shots required and process the result in-camera for you.
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JohnX

Link Posted 14/05/2018 - 12:06
Interesting. Whilst my K5II will take up to 9 shots, my K3II will take up to 2000 (at least, that's what the manual states).

So, with a 30 sec exposure per frame, that's.......mind boggling!!

Pentaxophile

Link Posted 14/05/2018 - 14:27
2000 shots in multiple exposure mode?
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swarf

Link Posted 14/05/2018 - 15:01
Karlo

That should work in many circumstances particularly where you have a moving subject, or at least part of the subject is moving. I'm not sure that it would work so well, or pehaps as intuatively, where the main part of the subject is static and it's the camera that is moving.

Nevertheless, I'll give it a try. It might be that you get a different effect. As regards the number of shots, I have enough trouble working with 9, I fear that any more may result in permanent brain fade!

Phil
K-5iiS; K-r; ME Super; ME; DA* 16-50 f2.8; DA 18-135 WR; DA 55-300 WR; HD DA 15mm F4 ED AL Limited; FA 50mm f1.4; A50mm f1.7; DAL 18-55mm; M40mm f2.8; + assorted non-Pentax lenses

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JohnX

Link Posted 14/05/2018 - 15:11
Pentaxophile wrote:
2000 shots in multiple exposure mode?

Surprising to me too!

Manual states;

5 Specify [Number of Shots}.
Select from 2 to 2000 times.

Haven't check the camera software. Could always be a typo, but he same upper limit is shown under "Interval Shooting" and "Interval Composite" too.

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alfpics

Link Posted 14/05/2018 - 15:35
It does work - I took one with the K3ii last year. Can't remember how many shots I took, but used the 'average' mode;



A PS - I think it was thirty or so.
Andy
Last Edited by alfpics on 14/05/2018 - 15:36

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RobL

Link Posted 14/05/2018 - 18:47
Pentaxophile wrote:
I came across this technique while looking for a workaround to use with my Samyang 14mm. I can't afford a 150mm filter system, so this looks like it might be worth playing with.

It's a technique that's also used for star trails. You take multiple exposures and blend them. Say you have 10 x 3-second exposures, that's a 30 second long exposure shot after blending. If your camera has multiple exposure mode, it can all be done in camera. If you want to go beyond ten shots, you could use the intervalometer and process them yourself.

https://www.slrlounge.com/long-exposure-photography-without-using-a-filter/

Wouldn't it be nice if this could be automated as a mode in your camera? You could tell it the length of exposure you wanted, and then it could calculate and fire off the number of shots required and process the result in-camera for you.

It can in the K1! Itís called interval composite mode where you set the number of exposures and their frequency and it blends in camera.

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Pentaxophile

Link Posted 14/05/2018 - 21:59
Ah, yes! Nice one Pentax, another cool feature that no-one else has thought of (afaik).

https://www.pentaxuser.com/forum/topic/interval-composite-shooting-57103
[link=https://500px.com/will_brealey/[/link]
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