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Stupid I know but...


ketch e2
7 770 50 Turks And Caicos Islands
19 May 2009 10:45PM
... why are lenses round

and images almost always oblong or square?

That can't be right ...

Robert

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User_Removed 12 2.8k 11 United Kingdom
19 May 2009 11:00PM
It all started many years ago.
Nikon used to make them out of old baked bean cans..............




.....................in fact they still do I believe.

(Sorry, just kidding.)


Gerry.
Big Bri 13 15.7k United Kingdom
19 May 2009 11:44PM
try polishing a curve onto a rectangular piece of glass.
keith selmes 11 7.1k 1 United Kingdom
19 May 2009 11:57PM
Then try making a round film holder ...

Rectangle does seem to be favourite for pictures of any sort ?
GreyMoonRising 6 1.5k 1
20 May 2009 8:29AM
Wonder if that's why the mirror in the camera is rectangle?
joolsb 10 27.1k 38 Switzerland
20 May 2009 8:40AM
Ever tried screwing a filter onto a square lens? Not easy.... Wink
BubbaG2000 7 767 1
20 May 2009 9:51AM
What about round ham slices on rectangular bread?
thewilliam 6 4.8k
20 May 2009 10:10AM
The original Kodak camera did produce round pix, which makes the best use of the lens's image circle. Some fisheye pix are round.

Lenses are probably made round because round shapes are the easiest to produce with normal machine tools. Ever tried to drill a square hole?
SteveCharles 12 2.3k 18 England
20 May 2009 11:47AM

Quote:... why are lenses round

and images almost always oblong or square?



The image that comes out the back of the lens is also round, it's the film or sensor used to record it that's rectangular.
StuartAt e2
9 1.0k 6 England
20 May 2009 12:23PM

Quote:Quote:... why are lenses round

and images almost always oblong or square?The image that comes out the back of the lens is also round, it's the film or sensor used to record it that's rectangular.



And producing a rectangular or square printed image results in far less waste.
20 May 2009 8:00PM
Why is a round of bread square?
spaceman 10 5.2k 3 Wales
20 May 2009 8:04PM
The best lens hoods are rectangular but hardly anyone makes them.
Goggz 7 2.3k 72 Wales
20 May 2009 10:13PM
Buy a "full frame" digital camera and use a crop (APS-C optimised) lens on it and you almost get the best of both worlds...
ketch e2
7 770 50 Turks And Caicos Islands
21 May 2009 8:50PM
I guess its what is easiest to manufacture - my guess too is that what you are looking at right now is in a square or oblong format - but actually what your eyes can see is a much larger orbital or circle around that screen or monitor.

With digital photography we do have the ability to only ever present images in a circular format (or a whole load of other shapes and formats) if we so wished - but nobody ever does.

Would round or oval cinima screens be much more relaxing and give a more natural and realistic feel - my guess is that they would - but that it might be just too expensive to do? So maybe we should have a go at some radically different formats and see how they fare here on EPZ? Does anyone fancy a bit of a challenge?

Anyway - thanks for your comments on what was an irreverent bit of foolishness on my part.

Cheers

Robert

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