 | 18% Grey | Apr 18, 2005 |
The 18% gray value comes from the print world. On printed material, it's claimed that the half way point between black and white reflects 18% of the light. So a neutral gray (not whitish or blackish) is 18% gray.
If a scene differs considerably from a statistically average scene, a wide-angle averaging reflected-light measurement may not indicate the correct exposure. To simulate an average scene, a substitute measurement sometimes is made of a neutral test card, or gray card.
The combination of exposure increase and the card orientation gives recommended exposures that are reasonably close to those given by an incident-light meter with a hemispherical receptor when metering with an off-axis light source.
The instructions a neutral test card recommend that the indicated exposure be increased by ½ step for a frontlighted scene in sunlight. The instructions also recommend that the test card be held vertically and faced in a direction midway between the Sun and the camera
http://en.wikipedia.org/wiki/Portal:Photography
http://en.wikipedia.org/wiki/Bokeh
If a scene differs considerably from a statistically average scene, a wide-angle averaging reflected-light measurement may not indicate the correct exposure. To simulate an average scene, a substitute measurement sometimes is made of a neutral test card, or gray card.
The combination of exposure increase and the card orientation gives recommended exposures that are reasonably close to those given by an incident-light meter with a hemispherical receptor when metering with an off-axis light source.
The instructions a neutral test card recommend that the indicated exposure be increased by ½ step for a frontlighted scene in sunlight. The instructions also recommend that the test card be held vertically and faced in a direction midway between the Sun and the camera
http://en.wikipedia.org/wiki/Portal:Photography
http://en.wikipedia.org/wiki/Bokeh
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 | - Blah - | Dec 14, 2007 |
Another tour of Thailand episode. :D
Just last week, we were away from Bangkok for a short sightseeing trip to the north of Thailand, taking advantage of the holidays(HM King's birthday) As i took quite a number of photos, i'll be splitting them into multiple posts in the photos... morePrevious blog entries: | ||
| Oct 17 | - | Many Faces of Naomi |
| Jul 8 | - | New 7 Wonders |
| Mar 20 | - | I'm the Joker! |
 | - Moving Pics - | Oct 8, 2007 |
Mola-Mola in Nusa Penida Bali
Check it out :) We finally saw the Sunfish :)Previous videos: | ||
| May 2 | - | Happy lil dude |
| Jan 17 | - | Counting_In_English.wmv |
| Aug 18 | - | Sharks in Pulau Payar, Langkawi |
 | - For Sale - | Apr 18, 2005 |
-sold- Mares Jubilee (M)
*edit* PRICE is Negotiable, please contact if interested.Mares's MOST streamlined BCD, or even the market.
Highly Rated by Divernet. (http://www.divernet.com/equipment/0903divertests.shtml#jubilee)
Works very well and is very streamlined... more
 | - Sounds - | Nov 23, 2007 |
Copy Cat Clan - Why you so Like that
All those you remember this 80's music. This will prob bring back memories from the old old days :p | - Clicks - |
