Michael Collier Posted November 16, 2005 Share Posted November 16, 2005 Ok, so I know target size affects angle of veiw at a given focal length. Heres my question: I am so used to using lenses marked for 2/3" CCDs that in planning which lenses I need for a mini-35 setup is making me a bit uneasy. I am looking for a range similar to an ENG news lens, something around 7.5-110mm (calculated for the 2/3" chip) but need that to work with the 35mm target of the mini-35. I think we are going with some primes so this is all the more important for me. is it a linear conversion? IE if the diagonal is aprox twice as big on the 35mm to the chip, does that mean that a 25mm 35mm prime equates to a 12.5mm chip? If anyone knows how to calculate that I would be very thankful. (not looking for actual focal length, just equal angle of view. these wont be anamorphic or anything complicated like that, just standard round lenses.) Link to comment Share on other sites More sharing options...
John Allardice Posted November 16, 2005 Share Posted November 16, 2005 IIRC, its a multiple of 2.5 to convert 2/3" to 35mm academy... in other words a 25mm cooke s4 would have the equivalent FOV to a 10mm fujinon on a 2/3" eng setup J Link to comment Share on other sites More sharing options...
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