Hi.
Don't know if I've posted in the right category, so feel free to move it.

Anyways, this might seem like a pretty stupid question, but I've been thinking about it for some time now. I want to know how a mirror reflection is perceived by the eye.

You can focus on objects in a reflections, why can't you do the same on objects in a screen image?

Simply because when light waves pass through an aperture(in this case your pupil), the light waves form a single point of an observation subject are spread oiut over the surface area of the retina, proportionally to the diameter of the aperture devided the distance from the aperture(and this is true to every single point on the observation image, thus creating a blurred image. When you focus on something the lens of the eye converges the light at the aperture so the light from a single point of the observation object is converged to a single point at the aperture, thus effectively reducing the aperture to as close to zero as possible(like with a pin hole camera) . As a mirror is just a reflection of light waves you still have to adust focus for near and far objects, in regards to the surface of the mirror to get them to converge at the aperture.
Say you are focusing on a TV screen, What you actually doing is observing a recorded image of both focused and blurred objects. You are ideed focusing in on the recorded image, but if that recorded imaige is of say a blurred car, you cant resolve it, as it is a secondary image that has already been burned into the screen as blurred.

Hi.
Don't know if I've posted in the right category, so feel free to move it.

Anyways, this might seem like a pretty stupid question, but I've been thinking about it for some time now. I want to know how a mirror reflection is perceived by the eye.

You can focus on objects in a reflections, why can't you do the same on objects in a screen image?

What do you mean by focusing on a screen image?

I doubt this will help, but I was bored so I drew this to illustrate focus.
http://i94.photobucket.com/albums/l106/imaplanck/ffggd-1.jpg