enny Posted April 7, 2015 Share Posted April 7, 2015 Metabones SpeedBooster on BMPCC with 50mm 2.8 becomes 35mm 50x 0.71=35 is this corect or its other way around Thanks Quote Link to comment Share on other sites More sharing options...
Super Members Mattias Burling Posted April 7, 2015 Super Members Share Posted April 7, 2015 With the bmpcc speed booster it's x0.58.So 50mm x 0.58 = 29mm (81mm FF)Plus the wider aperture of course.http://www.metabones.com/products/details/MB_SPEF-BMPCC-BM1 Quote Link to comment Share on other sites More sharing options...
enny Posted April 7, 2015 Author Share Posted April 7, 2015 So 50 becomes 29mm and what is this 81mm FF i did Google it but still bit confused thanks for education Quote Link to comment Share on other sites More sharing options...
aldolega Posted April 7, 2015 Share Posted April 7, 2015 FF = full frame. Most people use photo full-frame (5D, 1DX, D4, A7, etc... or 35mm photo film) as the yardstick to convert everything to before comparing. A bit convoluted, but it makes sense to me as FF has always been the same (24x36mm), whereas "Super35" has varied quite a bit over the years.With Speedboosters it's much easier to think of them as modifying the camera, not the lens. With the BMPCC booster, the Pocket's sensor basically becomes slightly-smaller-than-APS-C-size (.58 x 3 = 1.74. APS-C is ~1.5-1.6X), and ISO 200 will now expose like ISO 640 did before the booster. Quote Link to comment Share on other sites More sharing options...
Brett Munoz Posted April 7, 2015 Share Posted April 7, 2015 Does anyone know of any metabones alternatives? The speed booster is too pricey for me. I don't need control of the aperture. I currently have the lens turbo however, it seems to suffer from a blue dot in the center. Quote Link to comment Share on other sites More sharing options...
nikos Posted April 8, 2015 Share Posted April 8, 2015 The rj lens turbo ii has no blue dot issues.here is a metabones vs rj lens turbo comparison.http://blog.josephmoore.name/2014/11/01/comparing-focal-adapters-the-metabones-speed-booster-vs-the-rj-photo-lens-turbo/ Quote Link to comment Share on other sites More sharing options...
enny Posted April 8, 2015 Author Share Posted April 8, 2015 Does anyone know of any metabones alternatives? The speed booster is too pricey for me. I don't need control of the aperture. I currently have the lens turbo however, it seems to suffer from a blue dot in the center.i have metabone for CY mount but after reading peoples comments about rj turbo where its to loose play when attached to camera, glass being installed in reverse and my favorite bmpcc chip in side being scratched by the turbo i spend my hard earned money on metaboone i mean guy how created metboone knows his shit and has released white paper document on it can you say the same about chines version NO. I asked my self how serious are you taking your art?I love my spedbooster really good solid design and really tight.thanks guys for all the help Quote Link to comment Share on other sites More sharing options...
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