Got quite a basic photoshop question here about what peoples favored method of putting highlights/shadows on renders is, between the dodge/burn tool or the airbrush( as well as whether using just a black/white airbrush or lighter/darker variants of the colour you’re rendering?).
Also are there any particular positives or negatives to either method to do with things such as ability to go back and chance level of contrast between shading etc?
Thanks for the reply cyberdemon. I see what you mean with the example of rendering an apple.
I currently use dodge/burn at the moment so know a little about the different effects highlights, midtones etc give but will definitely have more of a play around with them.
With dodge and burn is there an easy way of adjusting the level of shading quickly? For example if I do a render with quite subtle shading but at the end decide I want the whole thing to be much bolder with the highlights/shadows is there a quick way to adjust this or does it mean going over each dodge/burn again?
I like to use black and white also, put them on other layers and use the layer modes so that it’s easy to change if you need to without being too destructive.
It doesn’t work on all colors, you just have to pick what works best for each specific situation. Sometimes d+b gives the best result, sometimes it doesn’t.
I’ll spray black on a multiply layer and white on another layer. Then spray a bit of sky blue in the upward facing surfaces and yellow in the downward facing surfaces (just a bit, very slight). Flatten it and dodge and burn it to push the contrast… and don’t spend to long futzing with it.
A more flexible/reversible alternative to d&b is to create two curve adjustment layers above what you want to dodge/burn (one made brighter, one darker), fill their respective layer masks with black, then paint in the effect by using a low opacity/flow white brush on the mask.
More of a photo retouching technique, but it could be useful here.
Yet another thing to try and test (as with others, not perfect for every situation) is to create separate layers for shading (black) and highlight (white) airbrushing layers. Then block in your color above the shading layer(s) on a multiply layer and adjust the transparency of your highlight layer(s) as necessary.