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PostPosted: Mon Aug 12, 2013 11:18 am 

Joined: Tue Jan 06, 2009 1:32 pm
Posts: 207
I'm shooting with a 50D and would like to shoot timelapse images raw. How fast CF should I get if I want to shoot like every 2-3 seconds?

Canon 50D | 430 EX II | 50mm f/1.8 II | 70-300mm f/4-5.6 IS USM | 17-50 2.8 VC |

PostPosted: Mon Aug 12, 2013 5:27 pm 
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Joined: Sun May 25, 2008 12:48 pm
Posts: 8087
Location: UK
If memory serves me correct a typical RAW from a 50D is perhaps 20-25MB? If so, divide that by however many seconds it takes to write. To be safe, let's call it 15MB/s. Upper end CF cards have been around 30MB/s+ for a while so you should have some headroom there. How much cheaper and slower you go you'd need to work out. I'd allow some writing speed headroom to be safe regardless.

Canon DSLRs: 7D2, 7D1, 5D2, 1D, 600D, 450D full spectrum, 300D IR mod
Lenses: EF 35/2, 85/1.8, 135/2+SF, 70-300L, 100-400L, 100L, MP-E 65, EF-S 10-18, 15-85
3rd party: Zeiss 2/50 makro, Samyang 8mm fisheye, Sigma 50/1.4A, 150 macro, 120-300 f/2.8 OS
Compacts: Sony HX9V, Fuji X100.

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