|Rock Behind Ice Plant - Morro Bay, California|
This monochrome image has been given a warm tone.
I think this idea is an invention of the digital generation. I don't remember hearing anyone claim in the darkroom that soaking an image in sepia or other toning chemicals changed the monochrome purity of it. In fact, toning black-and-white prints was the norm. A lot of photographers wanted to add a warm or (less often) a cool tint to their images to evoke a feeling. It was usually subtle, but sometimes it was obvious.
|On A Brighter Day - Tehachapi, California|
This was toned, too.
I'll go a step further: all black-and-white photographs should be toned if it improves the images. Often monochrome photographs are made better by changing the color tint, because the emotion is made more obvious (even if subtly). We have a subconscious response to warm and cool tones.
|Energy - Tehachapi, California|
Yes, this is also toned.
Finally, the argument that black-and-white photographs should not be toned is ridiculous because digital black-and-white is not true grey. Digital black-and-white includes subtle blues. It's already toned! Those who say that black-and-white shouldn't be toned have toned black-and-white photographs and don't even realize it. That makes me chuckle just a little.