Generally because the 12-24 is a super wide angle lens and also because of its better bokeh than the 18-55.
Both are fine lenses; they are just optimized for somewhat different shooting situations.
Also, the 12-24 is f/4.0 (at all focal lengths) which makes it better than the 18-55 at the longer end (f/5.6) at capturing light. This may matter in certain situations. The difference between f/4.0 and f/5.6 is one full f-stop which means the 12-24 can take in twice the light -- or looked at from a different perspective, work in half the light the 18-55 needs for an equivalent photo.
The 18-55 lens is also much more a mass-produced lens. Body and mount are plastic, not that there's anything wrong with that. Nikon will make & sell close to one of these lenses for every D40/D40x/D50 produced. How many 12-24s will they sell? I'd guess at significantly less than 10% of Nikon owners buying a new one. Factor in the tooling costs for what is a pretty complicated assembly, and there's your answer.
Why is the Nikkor 12-24 so much more expensive than the Tokina 12-24? Mostly, because it's a Nikkor.
"Why is the Nikkor 12-24 so much more expensive than the Tokina 12-24? Mostly, because it's a Nikkor."
So what is the difference in price between the 2 lenses? And is there a perceptible difference in the glass that would justify the increased cost with the Nikkor name?
I am really interested in this lens to as one of the 2 I want to get to complete my kit. (The other is at least a 300mm or 400mm zoom of some sort, preferably with VR.) But with the costs of the glass I want I am going to have to save for a while to satisfy this NAS.
Rena in Delaware Knowledge is the power behind the lens.
Thank you tronic what does bokeh mean? Also if I purchse the wide angle would it make my 18-55 useless? What do you think of the 50 MM f/1.8d I know the auto focus won't work on the d40 and would have to use it manually...but everyone is saying its a must have.
>Also if I purchse the wide angle would it make my 18-55 useless?
No, it will still work.
Seriously, only you will know if the focal range is still useful to you.
For the 50 f1.8, "must have" is a relative term. If you shoot in low light, the fast aperture will come in handy and may help you get a shot at a particular shutterspeed that would be impossible with a slower lens. "Must have?" Well, if you're getting paid and have to get a shot in those conditions, I'd say it's a must have. If you're not getting paid, it's an "I want."