Leica T lenses: Correcting some distortions

I will say, too, that software correction is absolutely an issue. It is true that in many cases it is minor and doesn’t make much of a difference. But in other cases it absolutely affects absolute image quality, and if you’re asking for 5x retail price for a camera based on premium lenses, software correction is a factor. The worst cases of software correction, in my experience, are when large barrel distortions are corrected in camera. If you want to see what this looks like, buy a Canon SX230HS travel zoom, install CHDK, and shoot raw, to see what the captured image circle looks like before Canon’s software gets to it. There is a LOT of correction going on under the hood, and pixels are severely stretched. The other end of the spectrum would be minor distortion correction, which, agreed, doesn’t make much of a difference. With the amount of correction shown here, I wouldn’t feel that I was buying a premium lens, that’s for sure.