Go to 400f doublet or stick to 345f triplet?, My screen is a little to big...

Status
Not open for further replies.
Hi there!

My hami diy projector works nearly perfect. I'm just sticking with the problem that my screen size is a litte to big

I've calculated that increasing the focal length of my objective to 400 will produce the desired measurements. The thing is, it's not 100% necessary to make the screen size smaller (it's just so I don't have to move stuff anymore).
But the downside is that the 400mm objective is a doublet lens and my 345mm objective is a triplet. Will I notice any difference in quality on my screen?

could you guys advice me on what to do?

kind regards!
 
Status
Not open for further replies.