Sigma 50-500mm F4-6.3 Ex Dg (1 Viewer)

JTF

Well-known member

• May 25, 2008

• #1

Has anyone used a 1.4X or 2X EX teleconverter on this lense, I am buying the 50-500mm this week for birding. I am not planning on getting a teleconverter but salesman indicates it can take either of the two telconverters listed.

 

rezMole

Well-known member

• May 25, 2008

• #2

2x will be an absolute no. You'll lose far too much detail. I have used a 1.4x on my Tamron 200-500 with only little success. Works OK when near to the bird and you just want a close-up shot, but generally, if the bird is too far away without a converter, don't bother.

 

Lisa W

I really need to get out and bird more

Staff member

Supporter

• May 25, 2008

• #3

What Camera are you using with it? If a Canon, it is my understanding it won't work on anything except a 1D version. Definitely won't work on the 20D even with the pins taped.

 

JTF

Well-known member

• May 26, 2008

• #4

Thanks for the info, I have a Nikon D50.

 

Roy C

Occasional bird snapper

• May 26, 2008

• #5

Lisa W said:

What Camera are you using with it? If a Canon, it is my understanding it won't work on anything except a 1D version. Definitely won't work on the 20D even with the pins taped.

Click to expand...

Just to clarify, it will work but not on AF. I do not own this lens but from what I have read it does not take a tc very well from a IQ point of view.
Have you thought about the new Sigma 150-500 OS lens which is just coming into the shops now - no detailed reviews yet but early sample shots look reasonably promising.

 

Last edited: May 26, 2008

Lisa W

I really need to get out and bird more

Staff member

Supporter

• May 26, 2008

• #6

Roy, thanks for clarifying my post, I did mean to say wouldn't autofocus - but left it out somehow.