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Shooting Back Projection with DSLR


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#1 Joseph Eckworth

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Posted 02 September 2012 - 05:14 PM

Hi There,

I have an upcoming music video for a small folky type artist, and the directors idea for which involves back projecting DSLR footage, and using shadow puppetry in a fairly experimental fashion.

When using DSLRs in the past I have found then when you shoot an image from a projector you get something similar to the jello effect in the image, and I was wondering if it is possible to avoid this? Can it be fixed by changing shutter speeds and iso's? or does it depend on the type of projector you use? Or would I have to use a different camera?

Any solutions on this would be hugely appreciated!

Thanks!
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#2 Ari Davidson

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Posted 02 September 2012 - 07:40 PM

Can you post some tests?
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#3 Nate Opgenorth

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Posted 22 September 2012 - 11:54 PM

Don't know if your shoot came up already but I find that keeping your pans nice and deliberate is the best way to avoid the "jello effect"...basically the CMOS sensor "creates" each frame from the top to bottom and if you jerk the camera rapidly you will get that jello effect. Really unfortunate but you have to work around it...as for specific shutter speeds...I'm assuming you'll want to shoot at a traditional 180ยบ~ shutter angle. I think the best thing to do would be to grab any of Canon's DSLRs and play around with them...I've learned the most from reading posts from some of the great guys on this forum but with my camera literally right next to me. I learn something new everyday.
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