Originally Posted by jump11
When you have found a picture
you like from a phto and converted into grayscale
do you copy the colours on the grayscale phto
if not please explain what to do.?
I think you're asking if you do the finished painting with the same values as the reference photo that has been converted to greyscale. If you like the value structure in the ref photo, then yes you could make your values the same or very similar. Personally, though, I like to tweak values - perhaps pushing the very darkest parts of the reference to the darkest I can get with paints, lightening the lightest parts to white, expanding some values to give more structure, compressing other areas to simplify and reduce detail (like distant areas).
aso how do you make sure
the tones are right painting from your imaganation?
Painting from imagination is, IMO, more difficult, but the same color & compositional principles apply. It's good to do a rough preliminary sketch to work out color & composition. Don't be shy about making adjustments - especially in value structure...that is so important.
Observe color in the world, paint, analyse your work (what you've done well and not-well), repeat as often as possible.