Hi,
I want to apply a gradient to some text in a poster, I'd prefer to use InDesign to do this, but for some reason im thinking illustrator may give better results.
Would it?
Vector gradients in any program can result in some nasty banding at large sizes, so I would be loathe to use one on a poster unless I really trusted the printer to work with me and make sure that the printing comes out right. And if you do the whole thing in Photoshop it’s easier to add some noise and make the whole thing look more natural.
I second doing the gradient in photoshop and adding a tad bit of noise to it. Vector-based gradients can go horribly wrong. There's quite a discrepancy between math-based formulas for color gradations and real-world printed fades. The only time I'll use a gradient in Illustrator or Indesign is if it's a very subtle fade between similar values of the same color.
Hi David
Years ago I knocked up this one for my own amusement; all gradients applied within Indesign.

As James says, the postscript routines in both Indesign and Illustrator are pretty much the same thing. However – vector-based gradients can go horribly wrong – the only time this happened to me was on an A1 poster in which the banding was a direct result of the shift between two colours being too subtle over too wide a distance. A 10 or 15% shift on one of the plate colours was not enough, and the gradient was replaced with a blend containing the maximum number of steps. Wearing the cost of remaking the film & proof certainly learnt me a lesson...
Captured from web.archive.org on 8 Nov 2013. view this capture