Quote:
Originally Posted by allan gould
Must be honest as I think that CF is a gimic especially with a refractor of f7.5. My Al tube holds focus all night and night after night. Never seen the need for it, but if you like the look of CF then go for it as it will be lighter and make you feel good at the same time.
|
I'll go against the grain on this one. I have converted my C11 to CF and it did a hell of a difference in keeping focus. I also have an ED80 (alu tube at F7.5) and a CF triplet 90mm (F6.7). The triplet will keep focus and won't get as wet as the ED80 does if temp drops a lot. So it did work for me.