Updated manual, please!

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J.C
Licensed Customer
Posts: 1861
Joined: Thu May 13, 2010 6:35 pm
Location: Wrocław

Dear Otoy, why Octane features are so poorly documented especially new features? There is only one sentence describing some parameters.
eg.
Coma - Rays hitting the lens edge have a larger field of view.
Do we have to guess what this does?

In comparison, please take a look at vray manual:
https://docs.chaosgroup.com/display/VRA ... icalCamera
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VVG
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+ C4D for noobs
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jobigoud
OctaneRender Team
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Joined: Sat Aug 15, 2015 1:28 pm

J.C wrote: eg.
Coma - Rays hitting the lens edge have a larger field of view.
Do we have to guess what this does?
For some optical characteristics it's going to be hard to describe without diving into physics.
For this particular one, just paraphrasing, it does distort rays in such a way that the periphery of the lens is acting like a lens with a larger field of view. There is not much more to say about it. This distortion is gradually stronger towards the periphery. Wikipedia says this: "coma is defined as a variation in magnification over the entrance pupil.". Or, maybe more concretely, "This causes an image that is not in the center of the field to appear as wedge-shaped." (Not sure if that helps much though…) https://en.wikipedia.org/wiki/Coma_(optics%29

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J.C
Licensed Customer
Posts: 1861
Joined: Thu May 13, 2010 6:35 pm
Location: Wrocław

jobigoud wrote:
For some optical characteristics it's going to be hard to describe without diving into physics.
For this particular one, just paraphrasing, it does distort rays in such a way that the periphery of the lens is acting like a lens with a larger field of view. There is not much more to say about it. This distortion is gradually stronger towards the periphery. Wikipedia says this: "coma is defined as a variation in magnification over the entrance pupil.". Or, maybe more concretely, "This causes an image that is not in the center of the field to appear as wedge-shaped." (Not sure if that helps much though…)
I and probably most users don't need detailed technical documentation. What we need is an updated manual with examples how to use new features without guessing what given parameter does.
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pegot
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+1 for more examples and tutorials...
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samsue
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+1
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