Suggestions for a new lens
Posted: Wed Sep 07, 2011 1:57 am
All,
Since I scratched my lens, I have to look for a new one. I can go back and get the same lens, but I was thinking that it would be good to get a longer focal length lens. A longer focal length has a few advantages:
1) it is more forgiving with focus
2) It is possible to generate a thiner kerf
3) It keeps edges more square
4) it keeps the work farther from the lens and reduces changces of geting smoke on the lens
Does anybody have a longer focus lens? What do you think if you do have one? I'm having trouble finding a lens that is coated to reduce reflection losses at 1045nm like the ones we have now.
Any thoughts or recommendations?
Since I scratched my lens, I have to look for a new one. I can go back and get the same lens, but I was thinking that it would be good to get a longer focal length lens. A longer focal length has a few advantages:
1) it is more forgiving with focus
2) It is possible to generate a thiner kerf
3) It keeps edges more square
4) it keeps the work farther from the lens and reduces changces of geting smoke on the lens
Does anybody have a longer focus lens? What do you think if you do have one? I'm having trouble finding a lens that is coated to reduce reflection losses at 1045nm like the ones we have now.
Any thoughts or recommendations?