[klem]

GRAthos

I think the photo is misleading because you are assuming he is aiming at a target. I think he is just leaning to the right or perhaps 'aiming' at the camera (which is a little to his left).

I have marked the pilot's eye position behind the sight and then projected the MG17 and aircraft centrelines onto the photo and placed the sightline pro-rata in position according to Lixma's FW190 drawing. You can see that the sight line passes to the right of the pilot's eye - or the left of it from the pilot's point of view (see thumbnail).

Then I enlarged the pilots face and placed a box around his eyes. I then placed a red box of the same width, offset to the right by the amount the aiming eye is off the sight line (I added the eye position too) plus it's centreline. You can see that the red eyes box centreline is in the centre of the cockpit frame give or take a pixel (second thumbnail).

So it all lines up with Lixma's drawing and the pilot does not lean when aiming.

Unless of course we have a RL WWII 109 pilot on the forum who knows better.