Extenders RF 1.4 Converter

[MrSparks999]

Ok so got one of these, but always thought if added to a 100-500 it would give 1.4x across whole range, but appears only from 300 upwards. Is this correct or am i being a muppet.

 

[YangMills]

It's correct. The 100-500 can't physically be zoomed below 300 with the 1.4x fitted.

 

[Canyondust]

Ok so got one of these, but always thought if added to a 100-500 it would give 1.4x across whole range, but appears only from 300 upwards. Is this correct or am i being a muppet.

This is a limitation of that particular lens.

 

[RDM5546]

If you use the RF1.4X TC on the RF 100-400mm lens it will be the equivalent of 140-560mm while losing 1 f-stop of brightness.
I have both the RF100-500mmL and the RF100-400mm and they are used with my R5 and R7 depending on the shoot. I find the 300-500mm restriction of the RF100-500mm annoying for action shooting so may use the RF100-400mm lens instead in those shooting situations.

 

[dmanthree]

Ok so got one of these, but always thought if added to a 100-500 it would give 1.4x across whole range, but appears only from 300 upwards. Is this correct or am i being a muppet.

Yeah, physical limitation. You can't even attach it unless the lens is zoomed to 300. Bummah, but the good news is that it's excellent.