The 24mm f/2.8 obviously isn't as wide as the kit 18-70mm, but is a fair bit faster and is tack sharp. A bargain if you find a decent used on.
As a comparison, the 18mm f/2.8 Nikkor prime is a £1150 lens, and the AF 14mm F2.8 is £1097.
So a true, wide prime is serious money.
__________________ "All the technique in the world doesn’t compensate for the inability to notice." - Elliott Erwitt
"It's no good saying "hold it" to a moment in real life." - Lord Snowdon
I looked at the 14mm, then looked at my credit card statement, and looked at the second-hand section.
:D
__________________ "All the technique in the world doesn’t compensate for the inability to notice." - Elliott Erwitt
"It's no good saying "hold it" to a moment in real life." - Lord Snowdon
For the money you are not going to get better than the 18-70mm kit lens, as you can see from the above prices. Advice is to take shots with this lens & if & when you get to a point you feel justifies better glass, then go for it.
Note the kit 18-70mm lens is raved about for its quality. It's actually the main reason I changed from Canon 300D with kit lens to the Nikon D70 with kit lens, as it was cheaper than upgrading the Canon to similar glass levels.