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Activity Forums Cinematography 2/3″ to 1/2″ lens conversion

  • 2/3″ to 1/2″ lens conversion

    Posted by Jaru22 on April 29, 2005 at 1:50 am

    Hey there,
    Can anyone assist me with how the math converts going from 2/3″ to 1/2″ lenses and vis versa? I know they change the viewing angle but do not know how much or what the calculation would be.
    What I am thinking is this….I own a DSR-390 which is a 1/2″ mount and want to get a wide angle lens on it. But, I am thinking if I get a 2/3″ lens and use the adaptor to fit it to my 1/2″ mount that would be a better investment and there are more 2/3″ options than 1/2″ options. So…say I was to get a Canon 2/3″ J14a x 8.5b, how would that translate on my camera? 5.5? 4.5? or?
    Thanks in advance!

    Mike Gluckman replied 19 years, 2 months ago 4 Members · 4 Replies
  • 4 Replies
  • David Jones

    April 30, 2005 at 6:46 pm

    You might consider something along the lines of a wide angle lens attachment made by OpTex.

  • Deleted User

    May 2, 2005 at 3:32 pm

    In addition to OpTex, you may also wish to refer to Century & CollinsCraft/Red Eye:
    https://www.centuryoptics.com/
    https://www.collinscraft.com/

    All the best,

    – Peter

    Just a friendly reminder to all: Please consider filling-in your COW user profile information so we have a better idea who you are, where you’re from, and so forth. It’s the friendly thing to do. Thanks!

  • Jaru22

    May 2, 2005 at 5:06 pm

    Thanks for the replies, but my questions is not where I can find wide adaptors but more how does the mathmatical conversion work out between chip sizes?

  • Mike Gluckman

    May 7, 2005 at 1:09 am

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