[Konvas] The correct ANSWER !!!!A question about 35mm lens

[olivier satnet]

see the attached file !!!!

THIS IS EXACLY WHAT I WANT TO EXPLAIN !!! but my english is not so good
I had play with this all time !!!
TALKING ABOut FIX lenses :

TAKE a 65mm(call it 50mm lens for more easy for those who can t understand )
used for 4x5 inch camera
(Schneider SUPERANGULON )
and use it with a 4x5 inch film (10x12cm)
with the same lens on the Linhoff camera : DON T MOVE NOTHING !
Use a 6x7 roll film back ... this Projected image have NOT changed !!!
it is the same image ... so i only HAD Croped with my film "gate" inside the
same image projected ...
After this , Adapt a 4.5x6 back .... I still crop smaller in the Image ..
adapt it a 35mm SLR camera body
and crop smallest again .... and finally use a 35mm film movie camera .....a
16mm movie camera ...super 8
and whatever !!!!
SO, If some poeples still without understand , i had take 10 minutes of my
time , i take in my archive a IMAGE taked with my 4x5 camera and 65mm lens ,
and put it in the REAL SIZE (10x12 cm  or 4x5 inch)
i do in photoshop the framing in real size too ....

The focal lenght IS THE DISTANCE BETWEEN THE CENTER OF THE LENS AND FILM ,
WHEN FOCUS IS INFINITE !!!   so a 65mm lens have 65mm between his center and
the film when focus in infitite !

UNDERSTAND IT ??? see attached file ....
FOR THIS a 65mm is a
very wide angle for 4x5 inch
Moderate wide for 6x7
Normal for 4,5x6
Short tele for 35mm SLR
Small Tele for 35mm filming
Tele for 16mm film
Super tele for Video HD or 1.3 CCD
SUPER tele for super 8

BUT IT IS THE SAME LENS AND PRODUCE THE SAME IMAGE ....
BUT NOT THE SAME cROPPING IN THE VIEWFINDER !!!

THe problem with modern technology is than people don t understand well the
basic of Opticals Rules ....

oF COURSE THIS IS NOT IMPORTANT ... !  :))

jUST DO films !!!!

Sorry for this "AGRESSIVE MAIL" ....

bEST, TO ALL, oLIVIER .
ps: THE MAN OF THE TREE IS A PICTURE I TOOK FOR THE COVER OF THE NEXT WEEK
LAUNCHED
"oNE DAY IN ECUADOR" .... FROM THE SERIE OF "ONE DAY IN" ....










> Sorry for adding to the runaway thread... I know most of us understand
> how different lenses look on different frame sizes.. here's a very easy
> way to remember how things work, and to convince yourself of the fact:
> A 50mm lens will produce exactly the same sized image on any camera...
> 16mm, 35mm, medium format, 1/3" video, etc.  The "zoom" factor occurs
> because all of these cameras have different frame sizes.  The gate on
> your film camera, or sensor in your video camera is simply cropping out
> a different piece of that original unmolested 50mm lens image
> (projection).  So of course a 16mm camera is going to see an apparently
> zoomed-in image compared to a 35mm still camera -- the gate cropped it
> thusly.  The full image may still be there, it just falls outside of the
> boundaries of your frame.
>
> Cheers,
> Sean
>
>
> Raymond Oelrich wrote:
> > If you study the photos in this image carefully they ALL show the man's
feet
> > on the far right hand side, and the flags at the top on the mast of the
> > ship. I guarantee you, with no doubt, IF you filmed this scene with all
of
> > these different cameras with the same lens you will NOT see the feet of
the
> > man in the sand at the lower right and you will NOT see the flags on the
> > mast. Not possible.
> >
>
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>
> Please be kind when replying and crop the replied message!!!
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