Thread: FOV with a barlow for photowork
View Single Post
  #3  
Old 07-10-2006, 09:02 PM
janoskiss's Avatar
janoskiss (Steve H)
Registered User

janoskiss is offline 		 
Join Date: Jan 2005
Location: Sale, VIC
Posts: 6,033
Keep in mind exposire time goes like square of magnification:

2x barlow -> 4x the exposure
3x barlow -> 9x the exposure
etc
Reply With Quote