Best eyepiece magnifier for Canon, when wearing glasses?

[eeyore_nl]

In your experience, what is the best eyepiece magnifier for the Canon 20D/30D cameras, especially when wearing glasses?
I read about the Nikon magnifying eyepiece, the Pentax and the KPS (which is the most expensive). Each seems to have its pros and cons. However, I don't see many experiences of people who use their camera with glasses.

The goal, of course, is to have a bit larger viewfinder image, to facilitate manual focusing I always leave my glasses on while using the camera.

Thanks in advance!

[poilu]

I don't wear glasses but take only KPS, the others deform borders and make focus difficult

[Farside]

I never find the Canon 10D (and I assume most of the others are pretty much the same) a problem with glasses. I get full view of the screen and only miss out on the bottom figures, but that's not a problem.
The K10D is the same.
Mind you, I wear letterbox specs and they tend to sit closer in to my face than my older ones.

[SkedAddled]

I also wear eyeglasses, and have no problems with using the viewfinder
on my XTi/400D. My only complaint is that I often have to mash my
oily nose against the back display's Lucite panel, resulting in smears
I frequently have to clean.
To that effect, I've been considering some sort of eyepiece extender
to keep my nose off the back of the camera body.

[eeyore_nl]

Well, I bought a Pentax O-ME53 eyepiece extender (1.2x magnification), and I regret it a bit.

First the good news: it actually helps with manual focus! The image is visibly enlarged (Canon 20D viewfinder), and the subject pops into focus more clearly, even with the standard matte screen (which is all I have for this camera). So, it does work for that purpose!

Now the bad news: it is a pain to use when wearing glasses Without glasses, it works well enough, but with glasses, my eye is just a bit too far away from the viewfinder. It makes that I can see either the image in the VF or the leds below, but not both at the same time. And I think that is pretty annoying.

So yes, it works, it is a good help for manual focusing, but it's not ideal when wearing glasses

[A G Photography]

Using contact lenses is the best and easier method to focus better on any camera.

I found out that glasses sometimes made me find the wrong focus even when I was pretty damn sure it was spot on, maybe it's glass-air distortion or distance to eye (the glasses are nearer to your eyes than normally so when pressed on the viewfinder), don't know... but when I have to shoot where I can't use Live View and using large apertures using contact lenses is a must.

They are also cheaper than any magnifier or eyecup or whatever other photographic device (I tried everything...)

[poilu]

...

[cheve]

I am using the "Contax F-2N" which has a nice rubber eye cup. I wear eye glasses and have found it works every well for me. I use it with a 350D.

Cheers,