Author Topic: Silent Picture Review for 550D  (Read 3538 times)

SKYFLIX

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Silent Picture Review for 550D
« on: October 22, 2013, 04:21:00 PM »
I couldn't find it in the current features, impossible to implement, in process of implementation, or already requested, so I would like to request the ability to show an image review during silent picture, utilizing the already existing configuration for review time (Off, 2 seconds, 4 seconds, 8 seconds or Hold).

The reason for this is as follows. I am implementing a Pinewood Derby photo finish system utilizing motion detection in live view. If I don't enable silent picture, the REVIEW works as normal, however the camera isn't quite fast enough to catch the finish. With silent picture, it is, however without a REVIEW, there is no way for me to display the results on a projector. I could utilize a different (faster) triggering system if need be, but with silent picture review, the camera could function autonomously.

Many Thanks! Great job devs!

a1ex

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Re: Silent Picture Review for 550D
« Reply #1 on: October 22, 2013, 08:13:39 PM »
Sounds interesting. Some older versions (don't remember which, probably those just before raw, maybe even the 2.3 stable) had color image review as soon as you took a picture.

The DNG pics have grayscale review (load file_man and pic_view modules), but not color and not right after you take the picture. But if you feel like porting dcraw as a module, you can implement color preview too.

Take a look here: http://nanomad.magiclantern.fm/nightly/archive/

SKYFLIX

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Re: Silent Picture Review for 550D
« Reply #2 on: October 28, 2013, 02:01:18 PM »
Hmm. I suppose a grey-scale review would be sufficient. However, as it turns out, I found it was just easier to setup a laser line / photocell trigger using an Arduino micro-controller and a 5V relay into the camera's remote input. Works like a treat. Based on my preliminary calculations, I have less than 50ms from photocell trigger to shutter.

a1ex

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Re: Silent Picture Review for 550D
« Reply #3 on: October 28, 2013, 02:03:34 PM »
Today I've added color review, so you may want to give it a try.

mk11174

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Re: Silent Picture Review for 550D
« Reply #4 on: October 28, 2013, 03:40:58 PM »
Today I've added color review, so you may want to give it a try.
Looks good to me 8]
500D/T1i  550D/T2i  600D/T3i  700D/T5i

SKYFLIX

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Re: Silent Picture Review for 550D
« Reply #5 on: October 28, 2013, 04:54:03 PM »
Oh sweet. I'll check that out tonight. Thanks!

SKYFLIX

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Re: Silent Picture Review for 550D
« Reply #6 on: October 29, 2013, 03:32:34 AM »
Color review through the file manager works great! Am I missing something though? How do i go about telling the camera to automatically display the last silent picture immediately after taking the shot?