Cir Polarizer


Status
Not open for further replies.

ndroo

Moderator
Staff member
Nov 22, 2003
8,243
3
0
47
www.fuzzyeyeballs.com
www.fuzzyeyeballs.com
#1
question from a newbie. since we can turn circular polarizers to select our desired setting, can it be turn to a 'off' position (ie. where it becomes a 'normal' mode)? what i m planning is getting a cir pol only w/o a uv filter (since i read in a thread that most lens would have some form of uv filter 'built in') & to avoid 'stacking'
 

Ian

Senior Member
Feb 20, 2002
2,548
0
0
56
Perth Australia
#2
renegade said:
question from a newbie. since we can turn circular polarizers to select our desired setting, can it be turn to a 'off' position (ie. where it becomes a 'normal' mode)? what i m planning is getting a cir pol only w/o a uv filter (since i read in a thread that most lens would have some form of uv filter 'built in') & to avoid 'stacking'
Yes you can use it this way, however be aware that a PL filter be it linear or circular will reduce the amount of available light by around 2 stops when fitted to a camera, so in reality you are far better off to remove it when it's not needed ...
 

ndroo-

Deregistered
Nov 6, 2003
117
0
0
47
Singapore
#3
Ian said:
Yes you can use it this way, however be aware that a PL filter be it linear or circular will reduce the amount of available light by around 2 stops when fitted to a camera, so in reality you are far better off to remove it when it's not needed ...
wow this was one of the question in my head ... forgot about it. since having extra filter does reduce the amt of light, i guess an UV filter will cause the same thing? but i read somewhere that usually the UV filter is installed to 'protect' the lens. so err ... is it recommended to have one on?
 

Jay

Senior Member
May 29, 2003
730
0
16
East
Visit site
#4
ndroo said:
wow this was one of the question in my head ... forgot about it. since having extra filter does reduce the amt of light, i guess an UV filter will cause the same thing? but i read somewhere that usually the UV filter is installed to 'protect' the lens. so err ... is it recommended to have one on?
The PL filter reduces the amount of light (if you notice it is grey tone thus like sunglasses simply put). UV, being clear, does not reduce the amount of light but filter out ultra-violet light that creates haziness. It protects as well.
 

ndroo-

Deregistered
Nov 6, 2003
117
0
0
47
Singapore
#5
Jay said:
The PL filter reduces the amount of light (if you notice it is grey tone thus like sunglasses simply put). UV, being clear, does not reduce the amount of light but filter out ultra-violet light that creates haziness. It protects as well.

thanks for the info
 

Status
Not open for further replies.
Top Bottom