Nigel Smith Posted February 26, 2013 Share Posted February 26, 2013 I came across this today on the Digital Bolex webpage, which got me thinking: "For instance, a 25mm in S16 has a very similar fieldof view as a 50mm in S35. Even though they have a similar field of viewthey do have a different look. The look difference between S35mm and S16mm: S16 gives you roughlytwice the depth of field for any particular field of view and has noneof the critical focus issues. Along with this greater depth of field you also get greater spatialdistortion, meaning things in the background look further away from thethings in the foreground. So basically, when you are shooting S16compared to shooting S35 you are trading the illusion of depth createdby an in focus / out of focus relationship, for the illusion of depthcreated by the size and shape difference of foreground and background." I have always considered a S35mm 50mm lens pretty much identical to a S16mm 25mm lens when shooting S16. Is it true that it's distortion of perspective would be different? Thanks for any opinions or advice Nigel Link to comment Share on other sites More sharing options...
Premium Member Dom Jaeger Posted February 27, 2013 Premium Member Share Posted February 27, 2013 Well they're different focal lengths, so yes they have different spatial distortion. If you think about it, to perfectly match a S16 25mm image you'd need to use a S35 25mm lens, and crop a S16 frame out of the middle. But to get the same angle of view on different sized formats you need to use different focal lengths, which have different characteristics in terms of how they render spatial depth. Link to comment Share on other sites More sharing options...
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