2 x converter

[Poider]

g'day just got a Nikon D3100 for Xmas from the wife can anybody tell me how much it costs for a 2 x teleconverter?
Peter

[OsmosisStudios]

USA? About $500

Theyre not magic, though, and have their drawbacks. Note, as well, that it won't work with either of the two lenses you've listed in your signature.

[Aegea]

I wouldn't recommend any TC for either of those lenses. With a 2x you will be at f/11 at the long end, and you will lose autofocus, plus you will have some loss of IQ. Even a 1.4x will give you f/8 and autofocus will be marginal at best. Been there, done that with a 70-300, and was not happy.

[sk66]

Must say, I use them sometimes and I'd recommend a 1.4 over a 2x whenever possible. I've used a 1.4x with a 28-300mm with good results...and I can recommend the Kenco TeleProPlus Series for quality and cost...

All that said, TC's are never a "first choice"...

[OsmosisStudios]

Originally Posted by Aegea

I wouldn't recommend any TC for either of those lenses. With a 2x you will be at f/11 at the long end, and you will lose autofocus, plus you will have some loss of IQ. Even a 1.4x will give you f/8 and autofocus will be marginal at best. Been there, done that with a 70-300, and was not happy.

Besides this, the Nikon TCs wont even mount to DX lenses and if you modify them to do so, the elements on the TC and the lens will hit eachother at the wide end.

[sk66]

Originally Posted by OsmosisStudios

Besides this, the Nikon TCs wont even mount to DX lenses and if you modify them to do so, the elements on the TC and the lens will hit eachother at the wide end.

Are you certain that's Dx and not "wide" lenses.....
TC's are not designed to work for lenses under 100mm and most will interfere at wider angles....
But to be honest even with a DX body the lenses I used a TC on were FX compatible so I can't say for sure...I do use a Kenco 1.4 on the Nikon 28-300 (which my Sigma 2x won't mount to and I've never actually owned a Nikon brand TC)

[Poider]

Just saw a tamron 200 - 500mm lens is this something i should consider if i want some decent zoom for my Nikon D3100?
Peter

[OsmosisStudios]

Originally Posted by sk66

Are you certain that's Dx and not "wide" lenses.....
TC's are not designed to work for lenses under 100mm and most will interfere at wider angles....
But to be honest even with a DX body the lenses I used a TC on were FX compatible so I can't say for sure...I do use a Kenco 1.4 on the Nikon 28-300 (which my Sigma 2x won't mount to and I've never actually owned a Nikon brand TC)

The rear element on most DX lenses extends to the back of the flange on the mount of the lens, regardless of focal length.

[kirbinster]

Originally Posted by Poider

Just saw a tamron 200 - 500mm lens is this something i should consider if i want some decent zoom for my Nikon D3100?
Peter

The Tamron 200-500 is a nice lens, I have one - but it won't autofocus on a gleded body like a D3100.

[Poider]

What is 'gleded' ?
Peter