minus violet filter a must?

Traveler · Post by **Traveler** » Fri Jun 18, 2004 11:47 pm

Hi guys,
I read that a minus violet filter on a telephoto lens will sharpen the image by reducing the chromatic aberration around bright stars. I'm wondering will there be any much difference when using an APO telephoto lens?

MooEy · Post by **MooEy** » Sat Jun 19, 2004 5:15 am

the minus violet filter is pretty much a gimmick. it's just a yellow filter, main purpose is to remove the purple fringing. but after removing the purple fringing the images do look a little bit better.

an apo is one that is design to have no chromatic aberration, thus all the minus violet filter does is make the image look yellow, nothing else.

~MooEy~

Traveler · Post by **Traveler** » Sat Jun 19, 2004 2:19 pm

icic...thanks for your reply Mooey!