Go Back   Steve's Digicams Forums > Digicam Help > Newbie Help

Reply
 
Thread Tools Search this Thread
Old Jul 12, 2010, 12:35 AM   #11
Senior Member
 
VTphotog's Avatar
 
Join Date: Mar 2005
Location: Extreme Northeastern Vermont, USA
Posts: 4,214
Default

Quote:
Originally Posted by tclune View Post
Just a terminological point. Graduated does not mean that the change is gradual. There are two kinds of graduated neutral density filters -- one is a sharply-demarcated filter with a dark half and a clear half. These are intended to be used in, e.g., photos of sunsets over the ocean, where there is a sharp horizon line. The more common (and more useful) GND is the gradual one. But both kinds are called "graduated neutral density filters."
The kind of filter with the sharp demarcation is usually referred to as a half-filter. They are available in half ND and half color. Graduated does actually mean there is a gradual change.

brian
VTphotog is offline   Reply With Quote
Old Jul 12, 2010, 1:47 AM   #12
Senior Member
 
TCav's Avatar
 
Join Date: Sep 2005
Location: Washington, DC, Metro Area, Maryland
Posts: 13,543
Default

The problem with both a GND and CPL is that you can't adjust them when you've got a lens hood on, and sometimes a lens hood is more important.

That leaves HDR or some other method of post processing to restore the detail in the shadows:
Attached Images
 
__________________
  • The lens is the thing.
  • 'Full Frame' is the new 'Medium Format'.
  • "One good test is worth a thousand expert opinions." - Tex Johnston, Boeing 707 test pilot.
TCav is online now   Reply With Quote
Old Jul 12, 2010, 5:53 AM   #13
Senior Member
 
Join Date: Sep 2005
Posts: 1,093
Default

Quote:
Originally Posted by VTphotog View Post
The kind of filter with the sharp demarcation is usually referred to as a half-filter. They are available in half ND and half color. Graduated does actually mean there is a gradual change.

brian
Brian, I know that you are quite knowledgeable. So it occurred to me that I may simply have been using terms incorrectly all my life. I Googled to see what I could find, and was unable to find anything about half-filters. However, there was no shortage of information on "hard edge" and "soft edge" graduated neutral density filters. This Wikipedia page is as good as any: http://en.wikipedia.org/wiki/Graduated_ND_filter For a use of the terms by a manufacturer, you could try here: http://www.singh-ray.com/grndgrads.html

You may have been referring to something other than these things, but this is what I was attempting to communicate.

TCav: I address the problem of adjusting a GND when it's on the camera (I have a hard time seeing the dark/light sides at all, even without a hood, when it's on the camera) is by painting the outer ring with white nail polish around the clear half of the filter.

Last edited by tclune; Jul 12, 2010 at 7:20 AM.
tclune is offline   Reply With Quote
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 1:01 PM.