Talk:Neutral density filter
From Wikipedia, the free encyclopedia
 |
This article is within the scope of WikiProject Physics, which collaborates on articles related to physics. | |
| Start | This article has been rated as Start-Class on the assessment scale. | |
| Low | This article is on a subject of Low importance within physics. | |
|
This article has been rated but has no comments. If appropriate, please review the article and leave comments here to identify the strengths and weaknesses of the article and what work it will need. |
||
 |
This article is within the scope of Wikipedia:WikiProject Filmmaking, an attempt to better organize information in articles related to filmmaking. If you would like to participate, you can edit the article attached to this page, or visit the project page, where you can join the project and/or contribute to the discussion. |
| Start | This article has been rated as Start-Class on the assessment scale. |
"Parallelicity" is not a word. Try parallelism, or refer to the property of coherence instead. A: Coherence has nothing to do with beam being parallel (collimated) or not. An ideal parallel beam does not even exist.
What is "film speed" ?
I will never understand why photographers talk about "shutter speed" when they mean exposure time. Speed and time have different physical units and mixing them will only confuse people.
