Archived posting to the Leica Users Group, 2011/07/05

[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]

Subject: [Leica] B&W on a digital camera
From: lrzeitlin at aol.com (lrzeitlin at aol.com)
Date: Tue, 5 Jul 2011 20:04:44 -0400 (EDT)
References: <mailman.1640.1309894598.1103.lug@leica-users.org>

Technical question:
When a B&W picture is made with a digital camera incorporating a Bayer 
filter, are all the pixels on the sensor used to form the image? Or, as 
in TV, is the B&W image derived from the green pixels? Secondly, if a 
color image is converted to B&W in Photoshop or a similar program, does 
the program simply desaturate all the colors, transform the colored 
pixel intensity to a greyscale equivalent, or use an algorithm to 
compose the image?
I was asked this question at a photography show and I didn't have an 
answer. Perhaps a Lugger knows.
Larry Z




Replies: Reply from kanner at acm.org (Herbert Kanner) ([Leica] B&W on a digital camera)
Reply from richard at imagecraft.com (Richard Man) ([Leica] B&W on a digital camera)