smeezekitty wrote:I have a new lens setup. I took apart the lens from a broken camcorder and used only the front part. With a bit of cutting and sanding, it fits perfectly in the hole in the front of the case.
It is much more practical than having the lens on a tripod way out in front. I can turn the lens to focus it although it doesn't change it that much -- probably because how far it is from the disc. It only focuses on objects rather close in.
That was a good idea to use another lens and cover the lens hole out right reduces noise and lets the light from the lens enter .
Yes to check the lens focus to the disk put some white paper on the nipkow placement point it at things at different distance and see where it will work and check the image on the paper if its not in focus it never will ...
When trying a lens its some thing that's has to be worked out by testing ... its a 32 line camera so your not going to need long distance focusing you want it to focus close arms length or 2 at most so you can fill the screen.
Try the paper test and see how in focus a object is on that white sheet you might have to adjust the lens distance or the nipkow mounting position .
I tended to do this in my garage with the door open and with sun light the focusing on that white sheet is easy but you want close so a lamp and test card is more wanted here ....we want reflected light ...Troys nipkow camera on this forum he shows this procedure .