Most people use the standard 220,330mm ohp fresnels. Diagonally through a 15' lcd you need to see 60.5 degrees with the 330mm side. This explains to me why I never got a triplet to work well. I'm using a ohp lens. Most cooke triplets are designed for about 45 degrees.
Could someone explain how a cheap standard triplet can handle this?
Could someone explain how a cheap standard triplet can handle this?