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   REPLYADDR 56g.1183@ztq4.net   
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   REPLY:  48d8ddad   
   PID: SoupGate-Win32 v1.05   
   On 12/31/23 3:00 AM, The Natural Philosopher wrote:   
   > On 31/12/2023 05:47, 56g.1183 wrote:   
   >> On 12/30/23 9:01 AM, Theo wrote:   
   >>> Ahem A Rivet's Shot  wrote:   
   >>>> On Fri, 29 Dec 2023 23:46:17 -0500   
   >>>> "56g.1183" <56g.1183@ztq4.net> wrote:   
   >>>>   
   >>>>> Hmm ... could stuff a H-Blad sensor in there, make   
   >>>>> a $5000 "Brownie"  :-)   
   >>>>   
   >>>>          Take one out of a rather cheaper camera perhaps or use a   
   phone   
   >>>> spare part.   
   >>>   
   >>> Raspberry Pi camera, of course!  But you may find the sensor a little   
   >>> small   
   >>> for a full 35mm frame. Would be fun to see what happened though.   
   >>>   
   >>> Theo   
   >>>   
   >>   
   >>    "Brownies" were 6x6 ... not 35mm. In theory you'd   
   >>    want a 6x6 sensor, LOTS of pixels, though the LENS   
   >>    isn't THAT great. 6x6 with a GOOD lens is usually   
   >>    pretty spectacular.   
   >>   
   > They were not.   
   >   
   > Very few cameras use 6x6.   
      
      I'd count Hasselblad as a "significant" exception ...   
      
      Though 6x7 is "better".   
      
   > they were generally about 2.25" x 3.25 " on 620 film.   
   > I only remember 127 class cameras generating square negatives   
      
      A lot of the cheap 620 cams did 6x6 ... I had a   
      number of them. Big square negs.   
      
      127 was popular in the 60s/70s ... it was also   
      square ... 4.5x4.5 maybe ? Again it was most   
      popular in cheaper "consumer" cams. My mom   
      had a few, and now I do.   
      
   > IIRC today's 'half plate' (Medium format)  cameras are only 5x4"   
      
      Ummmmmmm ... look again.   
      
      IMHO, "medium-format" is at least 6x4.5 (Mamiya 645) to 6x9   
      
      Basically, it's about 35mm X 4 area   
      
      Does wonders.   
      
      I have a Mamiya 645 and Pentax 6x7 (original model).   
      Beautiful pix. Puts 35mm to shame.   
      
      One of the antiques looks like maybe 6x12 ...   
      one of those really really old vertical formats.   
      Likely would have to physically fabricate from   
      4x5 roll film. Serious pain !   
      
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