> Maybe you're asking something else, like what is the "normal" lens for
> 6x9 film. I think it would be the same length as a diagonal from one
> corner of your film to the other. So, to calculate that you would take
> the square root of (6x6 + 9x9) which is approximately 11cm or 110mm.
> I think thats right.
Correct (for 120 film about 115 mm for 6x9, 80 mm for 6x6 and 75 mm for
4.5x6 is the standard.
Be aware: If you take closeups with a pinhole at such long focal length the
unsharpness due to the pinhole size will be much larger than assumed in the
standard formulae used to calculate optimum pinhole size. You should choose a
bit a smaller pinhole (but closeups with pinhole tend to be a bit frustrating
if you are going for sharpness ...)
keep on
martin
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Maybe you're asking something else, like what is the "normal"
lens for 6x9 film. I think it would be the same length as a diagonal from
one corner of your film to the other. So, to calculate that you would take
the square root of (6x6 + 9x9) which is approximately 11cm or
110mm. I think thats right.
----- Original Message -----
Sent: Friday, October 26, 2001 9:52
AM
Subject: Re: [pinhole-discussion] Micro
or macro photo with pinhole photo
Thank you for your response
But I did not want a wide angle image, so for instance, if I want to
make images of fruits, with a 6X9 120mm film, is my image going to be
distorces ? How can I have a normal image for a 120mm film ? I do have a
zero 6x9 camera and thinking to built a 4X5 one
Thank you so much
Luciana
>From: George L Smyth
>Reply-To: pinhole-discussion@p at ???????
>To: pinhole-discussion@p at ???????
>Subject: Re: [pinhole-discussion] Micro or macro photo with
pinhole photo
>Date: Fri, 26 Oct 2001 09:36:25 -0700 (PDT)
>
>
>--- luciana napchan wrote:
>
>
>
>
I would like to know which camera should I use to make macro or
>micro photography with pinhole ?
>
>It doesn't matter - just place your subject close to the
pinhole.
>
>Cheers -
>
>george
>
>=====
>Handmade Photographic Images
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>
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