Long Exposures

[Linda Barzini]

Is there any way of overriding the 1fps and set an exposure of 30 seconds to do a timelapse of stars?

 

[David Battistella]

The red uses an electronic shutter. The maximum exposure duration is 1/2 second. You can use frame averaging modes in which the camera makes up to 16 half second exposure and combines them into a frame. In these modes you can see the movement of star fields.

 

[Linda Barzini]

About halfway there.

 

[David Battistella]

Not quite. I've used this mode, you should try it the results are impressive.

 

[Martin Stevens]

Not quite. I've used this mode, you should try it the results are impressive.

Can you post some samples?

 

[David Battistella]

Well

you won't see into deep space but you can see stars moving over long time lapses.

 

[Graeme Nattress]

For any long exposure work, frame averaging is the way to go. It gives you the longer exposure you want, but it also significantly drops image noise allowing vastly higher ISO without significant penalty. If you're doing a 16 frame average, shooting at ISO6400 looks as noise free as you could want.

Graeme

 

[Burke Doeren]

Agreed. I tried frame averaging for the first time a few months ago and it was spectacularly clean.

Just make sure you black shade for 1fps first to get the best results.

 

[Martin Stevens]

For any long exposure work, frame averaging is the way to go. It gives you the longer exposure you want, but it also significantly drops image noise allowing vastly higher ISO without significant penalty. If you're doing a 16 frame average, shooting at ISO6400 looks as noise free as you could want.

Graeme

Can you post image examples to show this feature off?

 

[Graeme Nattress]

http://www.graemenattress.com/wp/160-pg-unicorn-2/

Dragon LLO OLPF. I'm stopping down to get the DOF I need for the shots, so that's why I'm using the averaging mode. It works better than even a perfect long exposure as it doesn't just ensure enough integration time to make the correct exposure, but also drastically lowers noise. Most shots there are ISO3200, the darker ones ISO6400.

Graeme

 

[Nick Morrison]

Could frame averaging be used in non-timelapse situations?

 

[Graeme Nattress]

Absolutely! I've used it for stills, but it works for motion too. I've not had the chance to experiment with that, so if you do, provide us feedback please!

Graeme

 

[David Battistella]

I've done some frame averaging with motion and short bursts. You can not record sync sound.

As I recall if you average 2 frames at 12fps, you end up with a 24fps motion stream. One little used mode for better compression in slomotion is burst mode. Doing this you can obtain 100 frame bursts at say 3:1 compression at 48fps for example.

But it back to averaging, you do get s bit of motion blur issues because it's taking two exposures. I've used it for tabletop stuff. But sometimes it's better to use burst mode and just record the higher compression as an alternative.

 

[Andrew Allsbury]

Graeme, would it be possible to turn sound on in averaging mode?

 

[Stacey Spears]

I have shot water, in motion, using frame averaging specifically for the look.

 

[Ken Butti]

would love to see some examples. Graham your link just goes to a toy transformer thing..

 

[Joan Poggio]

go down to shots of the robots in the dark!

 

[Chad Shillady]

Question, I’m trying to use the time laps setting and frame averaging I’m at 1 FPS and 360° but when I go to frame averaging or summing the only option I have is 2 frames all the other numbers are grayed out. I’ve gone through every setting to try to fix this. I even did a factory restore and still get the same results. Anyone know what could be causing this? Oh, this is on a DSMC2 Helium with PL mount and Zeiss 15mm CP.3 mounted.

Thanks,
Chad

 

[Cole Sprague]

The 8k cameras are limited to 2 frames for averaging and summing. The others go up to 16.

Question, I’m trying to use the time laps setting and frame averaging I’m at 1 FPS and 360° but when I go to frame averaging or summing the only option I have is 2 frames all the other numbers are grayed out. I’ve gone through every setting to try to fix this. I even did a factory restore and still get the same results. Anyone know what could be causing this? Oh, this is on a DSMC2 Helium with PL mount and Zeiss 15mm CP.3 mounted.

Thanks,
Chad

 

[Chad Shillady]

OMG, seriously? I didn’t read that anywhere in the documentation. so even if I drop down to a lower resolution it won’t make a difference? Thank you SO MUCH for telling me this. I was going crazy trying to get this to work.