I’ve been wondering for a very long time if using a teleconverter, moreover a 2x one, was worth it or not. I’ve heard a lot on forums that I would lose light, the aperture is reduced 2x (f/2.8 becomes f/5.6) that it is not sharp at all and that I would even lose autofocus. That made me doubt a lot even if it is not that expensive, but still, from $120 to $180 on average, that is always money coming out of you wallet that would be lost in the end if this is really bad!
I use this Sigma 150mm f2.8 APO macro lens for all my macro work that is very good but also big and heavy. I wanted to have this extra reach to do some wildlife photography without adding the bulk and weight to my backpack and without paying $1500-$2000 for a 300mm lens. A teleconverter then seemed like a good idea so I gave it shot. I bought this Bower Teleconverter on Amazon for $126.
I am extremely pleased with my purchase. This adapter is pretty small, 1 inch (2.5cm) wide, about 7oz (200g) so this is not much of a big deal to always have it with me in my backpack. As a reminder, I shoot with an Sony A7 mark II and use the Sony LA-EA4 adapter specifically for this Sigma lens. I thus add the teleconverter (A-mount) in between the lens and the LA-EA4 adapter. Continue reading Is It Worth Using a 2X Teleconverter? Bower A-mount With Sony A7II (With LA-EA4 Adapter)