Hey guys. Planning my projector and ran into a major problem. To get the image size I want, I need a projection lens with a focal length around 910mm. I can't seem to find any lenses this big.
What can I do about this?
I know DIYPC sells a lens with 455mm fl. Is there a way I can use it and put in something else to effectively double its fl?
Any ideas would be greatly appreciated.
What can I do about this?
I know DIYPC sells a lens with 455mm fl. Is there a way I can use it and put in something else to effectively double its fl?
Any ideas would be greatly appreciated.
Look for a projection lens used in astronomy (telescopes) and astrophotography:
http://www.astrokrak.pl/sklep/product_info.php?products_id=270
http://www.astrokrak.pl/sklep/product_info.php?products_id=270
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