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Forums > Back > 14-24 but .....with crop
Rainer
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#18
01-16-2011, 11:06 AM (This post was last modified: 01-16-2011, 11:06 AM by Rainer.)
[quote name='genotypewriter' timestamp='1295171709' post='5569']

Are all rectilinear lenses made the same?

[/quote]



Well, to be called "rectilinear corrected", the projection used in the lens

must follow the formula



FOV (rectilinear) = 2 * arctan (frame size/(focal length * 2))



as good as possible ... since it is this projection formula that

keeps the straight lines you see straight on the image you take.

So, yes, the better the correction of the lens, the more accurate it

will follow this formula.
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Messages In This Thread
14-24 but .....with crop - by ficofico - 01-15-2011, 05:55 PM
14-24 but .....with crop - by blende8 - 01-15-2011, 06:08 PM
14-24 but .....with crop - by ficofico - 01-15-2011, 06:31 PM
14-24 but .....with crop - by Rainer - 01-15-2011, 06:36 PM
14-24 but .....with crop - by Brightcolours - 01-15-2011, 06:58 PM
14-24 but .....with crop - by genotypewriter - 01-15-2011, 07:13 PM
14-24 but .....with crop - by Brightcolours - 01-15-2011, 07:17 PM
14-24 but .....with crop - by genotypewriter - 01-15-2011, 07:21 PM
14-24 but .....with crop - by blende8 - 01-15-2011, 07:27 PM
14-24 but .....with crop - by Brightcolours - 01-15-2011, 07:37 PM
14-24 but .....with crop - by Rainer - 01-15-2011, 08:05 PM
14-24 but .....with crop - by Rainer - 01-15-2011, 08:22 PM
14-24 but .....with crop - by Rainer - 01-15-2011, 08:40 PM
14-24 but .....with crop - by blende8 - 01-15-2011, 09:04 PM
14-24 but .....with crop - by genotypewriter - 01-16-2011, 06:16 AM
14-24 but .....with crop - by Rainer - 01-16-2011, 09:36 AM
14-24 but .....with crop - by genotypewriter - 01-16-2011, 09:55 AM
14-24 but .....with crop - by Rainer - 01-16-2011, 11:06 AM
14-24 but .....with crop - by genotypewriter - 01-17-2011, 03:54 AM
14-24 but .....with crop - by Guest - 01-29-2011, 01:56 AM

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