Histogram Lied to Me !

Started Sep 10, 2007 | Discussions thread
Zane Paxton Veteran Member • Posts: 6,947

Matt_Anderson wrote:

Red/Magenta Zinnia.

According to the histogram, I was perfectly exposed. (heck it said I
had 1/3 stop of headroom)

"Perfectly" ?

If I interpret what you are saying, it sounds like you placed the petals in zone 7 maybe???

According to Ron Reznick's color luminosity chart, majentas should be exposed for zone 4-5. (interpreting Ron's value of color E5 at 115/255. which is about zone 4-1/2 + -) Bright color doesn't necessarily equate to high luminosity (only true for yellow). The interesting exercise is to convert Ron's color chart to B&W to see how light meters see the luminosity values of color.

Ron's chart below from his post about 2 months ago:

But, as we see, the flower petals are not perfectly exposed.

Twenty some mosquito bites and my excitement upon seeing a Monarch
Butterfly proved to be distracting enough to forget simple exposure
fundamentals ...

-- hide signature --

Nikon D2x
NAPP Member

'Life is not measured by the number of breaths we take, but by the number of moments it takes our breath away.” ~ Anonymous

 Zane Paxton's gear list:Zane Paxton's gear list
Nikon D7000 Nikon AF-S DX Nikkor 16-85mm f/3.5-5.6G ED VR Nikon AF-S Nikkor 17-35mm f/2.8D ED-IF Nikon AF-S Nikkor 70-200mm F4G ED VR +2 more
Post (hide subjects) Posted by
(unknown member)
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow