Different Lighting source for feature detection

[Mfranquelo]

Hello 

I have a question:

- If its okay for Agisoft to have 2 different images (for stereo photogrammetry measurements) with different lighting sources on the subject.
I guess this could affect the feature detection if the same "features" are in a different lighting condition, for example in one image light is coming from the zenith and on the other one its coming from the front.

Could anyone clarify this please?
Is this very critical ?

Thank you a lot,
Manuel.

[Alexey Pasumansky]

Hello Manuel,

We recommend to avoid direct light sources especially for turn-table capturing scenario (or scenario when the source of light moves relatively to the object).

[Mfranquelo]

Hello Alex,
Thank you a lot for your response.

What about if the light source is diffuse ? Light direction would change of course, but the change would be very subtle.
Is the feature detection affected really negatively by this approach ?

[Alexey Pasumansky]

Diffuse light is much more preferred and should not affect the alignment, of course, providing that it is doesn't cause heavy shadows.