[Klaus]

I'm currently preparing the Sony 85mm GM review and did the usual size comparison (using camerasize.com) - see attachment.

Ok, of course, the Sigma looks ginormous with the attached hood but even without it, it's a magnitude bigger than the native GM lens (to the left). I'm really wondering how desperate you have to be to buy such a lens. Simply lengthening the lens barrel is conceptually just silly.