Sigma 2X EX DG APO

It bumped my f/2.8 to a max f/5.6 when added, but that was expected. As other reviewers stated, check the sigma specs on this to see exactly which lenses it will work with! And be prepared for a massive looking camera - I thought it looked mean with a...

Users need to be responsible for what they buy. I have all but tossed out Sigma lenses, but others, not so. Pay attention to what you buy. Don't accept myth an don't assume too much. Saying something has AF doesn't mean it will AF with this or that --...

Love the way it attaches to the lens. You do need to understand that using this converter takes two F-stops off the max aperture. A user who does not appreciate this could be disappointed with an apparently poor result. However, when used in bright...

Love the way it attaches to the lens. You do need to understand that using this converter takes two F-stops off the max aperture. A user who does not appreciate this could be disappointed with an apparently poor result. However, when used in bright...

Wildlife photography, mainly birdwatching

Wildlife photography, mainly birdwatching

I use this with a sigma 70-200 mm f2.8 lens which by itself is super sharp. The reach with the 2x tc is welcome but there is some inevitable loss of ultimate sharpness with the teleconverter. Some tweaks in light room work wonders. OK a £6000 prime...

I use this with a sigma 70-200 mm f2.8 lens which by itself is super sharp. The reach with the 2x tc is welcome but there is some inevitable loss of ultimate sharpness with the teleconverter. Some tweaks in light room work wonders. OK a £6000 prime...

no great shakes but no real faults either.bought with 70-200 lens and a good combination.

no great shakes but no real faults either.bought with 70-200 lens and a good combination.