Both kids started basketball today. I took this shot on a Panasonic GX85 and Sigma 56mm f/1.4 using the built-in Ex-Teleconverter feature.
According to the manual: “Extended Tele Conversion enables you to take pictures that are further enlarged without deteriorating the picture quality”. Again, this is built-in camera feature… not a physical teleconverter adapter.
I don’t fully agree that it doesn’t affect picture quality as I feel there’s some degradation. However, this feature can essentially take a prime and give you two additional focal lengths out of it… 1.4x and 2.0x.
So for this 112mm prime lens (35mm-eq), you also get 159mm and 224mm!! Sounds like a pretty good deal to me!