On Thu, 07 Nov 2013 12:48:04 +0100, Bertho Stultiens <[email protected]> wrote: > On 11/07/2013 12:34 PM, Sebastian Bachmann wrote: >> The problem ist that the terms high magnification and depth of field does >> not fit well together. > > You can improve on the DOF if you use a very small apperture: a > pin-hole. You will need a lot of light to image anything through a > pin-hole and a good objective lens on your camera system to image > properly on the sensor.
yes, with a ideal pin hole camera you would have no depth of field at all :) if you build a optical system with a very small aperture (sorry in my previous mail i wrote large aperture, i meant large aperture value = small diameter) you create light diffraction on the edges of the aperture blades - which needs to be compensated by the optical system, which is very complicated and the optical system will get very heavy. ------------------------------------------------------------------------------ November Webinars for C, C++, Fortran Developers Accelerate application performance with scalable programming models. Explore techniques for threading, error checking, porting, and tuning. Get the most from the latest Intel processors and coprocessors. See abstracts and register http://pubads.g.doubleclick.net/gampad/clk?id=60136231&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
