AF-I or AF-D

[markyboy.1967]

I have saw a Nikon 300 AF-I for sale which i believe is an older lens but added to tat there a a 300 AF-D for sale. Can anyone tell me if the AF-I is much better than the AF-D type lens.Cheers.

[puddleduck]

AF-I is the first version of AF-S

The lenses are generally much bigger than AF-S (build quality) but with stellar optics.

AF-S and AF-I are totally compatible and if you want to use Nikkor TC's you are better of with AF-I or AF-S, rather than AF-D.

[markyboy.1967]

Thanks mate. Just looking to replace the 300 f4, would like a 400 f2.8 or 500 f4 but due to costs im going to have to save and when i saw the 300 f2.8 both in AF-I and AF-D for sale it would let me get a better lens now and still help save towards the lens i really want. What the AF-I like for focus speed? and is the AF-D similar focus speed to my 300 f4 AF-D.

[puddleduck]

As a rule of thumb an AF-I version of a 300mm will focus faster than an AF-D.

AF-D focus speed is body defendant though - on older Pro class D1 bodies you'll find the AF-D very quick, on lower end bodies ie D200, D300 then the AF-I will be quicker.

I have shot with a 300mm AF-I, its really huge. Optically its amazing.

If considering an AF-I lens I'd make sure the motor is in good order, as trying to get one repaired will cost a fortune.

[markyboy.1967]

Thanks Puddleduck, yeah it worries me about the AF-I as im told Nikon wont service them any more. Stuck in 2 minds to just keep my money and save for that 400 or 500 or buy an upgrade 300 lens until i get the money together...Cheers.

[Nicola.P]

This site might be of some use: http://www.nikonians.org/nikon/slr-lens.html