Does sigma 1.4x work with canon 300 f/4 L IS lens ?

[kaustubh]

the subject says all about my question. Does anyone out there have

experience with this combination ? if it does work, does it work in AF

mode or MF on elan7e.

 

I am debating between sigma 100-300 f/4 if ex hsm apo lens and the

canon 300 f/4 L IS lens. I already have sigma 1.4x that I use with my

sigma 180mm ex if hsm apo macro lens.

 

same Q for sigma 2x. Even if it were to work, i know that 600 f/8 can

be considered quite slow.

 

Thanks in advance.

 

Kaustubh

[awindsor]

Yes to the question about working. No idea about the quality. The Sigma TCs do not report the effective aperture. The camera will AF with the 1.4x anyway. The camera will attempt to AF with the 2x since it will report 4 as the maximum apeture not 8. Whether it succeeds depends on the ambient light and contrast of the subject.

[awindsor]

The lens appears on the extended <A HREF="http://www.camerahacker.com/

sigma_teleconverter/">compatibility chart</A>. This may be helpful if you own other

Canon lenses.<p>

 

I was mistaken about the aperture information though. The Sigma does correctly

report the aperture information. Apologies. <p>

 

Hope that helps. <p>

 

PS: Out of interest you might like to look at <A HREF="http://194.100.88.243/

petteri/pont/Reviews/de_TC_vs_TC/a_Tamron_vs_Sigma_1.4x.html">Pettteri's

Pontifications TC shootout</A>. Then again maybe not ;)

[yakim_peled1]

I have the 300/4 IS and wholeheartedly recommend it. Think about it: 1/60 under all shooting conditions and 1/15 !!! when you (well, actually I but I am sure everyone can achieve this) brace yourself against something.

 

Happy shooting ,

Yakim.