Can it damage a Canon L Series Lens (or a photographic lens with anti-glare lenses) if a powerful (Class IIIB or IV) laser is passed through it?
I would like to get a wide laser beam but a high quality one. That's why I'll make it go through a high-end Canon lens. But I would like to know if that is likely to damage my lens ! Maybe it will ...
I have been asked to take some product photos of various scientific lasers. Most of them will just be simple shots of the boxes on a white background but I will also have to do an 'action' shot a bit ...
Would it be possible to get a "white" lighthing of a subject by using 3 different lasers (R, G and B) If so, which wavelengths and proportions should be used ?