Hi, I have had a Canon EOS 50D for a long time and decided to upgrade to a 7D Mark II since this fitted my need for indoor sports photography. I also purchhased a used Canon 70-200 f/2.8 L USM. But I am not happpy with the images, they are not sharp but have a soft focus. I saw that a focus screen (EH-S) is available suitable for lenses with f2.8. Does anyone have experience of this focusing screen?
The images shoot indoor is usually at 1/800, f/2.8 and ISO 6400
