[cire_iel]

N12-24用在FX機係咪可以用18-24mm果段?
如果可以,相片質素會一樣?好d定差d?

[pierokwong]

cire_iel,

There is a couple of aspect that involved in your question.

First of all, I wanna point out something that you've got wrong in your question.

If you use a 12-24 on a FX body, you are getting a 12-24 range.

The impact for all DX lens on FX body will be:
- You can have a DX1.5x mode on FX body, that will provide you a longer range. But at the same time, you will lost some mega pixel as a trade off. I can't remember but it should be down to 6MP in that DX crop mode.

or you don't setup your camera to switch to DX Crop mode automatically, then you will have
- Dark circle around the edge of the image as the sensor size on FX is bigger than what the lens can see. But in this mode you will have the full resolution, and you don't have the longer 1.5x range.

Hope I have provide you some answer to your question.

Cheers,
Piero

[cire_iel]

Thx ching