40D - Grainy viewfinder???

[EspressoJunkie]

Hi all,
Was out today for the first time with my new 40D and noticed that the viewfinder seems to have a very grainy look to it, which seems to get more grainy the further out the lens (18-55) is zoomed. Is the 40D supposed to be like this, ot is there a fault? Ive only ever used an A200 prior to this.
Thanks guys

 

[lawrenceots]

My new (to me) 30D is the same.First time I look thru it, bring used to a D70s, I was shocked at the grainess and darkness but after a few days I don't notice it. Could be a fault, I don't know

 

[Ste Manns]

My 50D is the same, didn't notice it much before but it's a lot more apparent with my M42 lenses, especially when I close the aperture. I assume its meant to be like that.

 

[User Name]

Aren't you just seeing the grain on the focusing screen?

 

[Ste Manns]

Aren't you just seeing the grain on the focusing screen?

That is what I assumed yeah.

 

[andrewc]

its not dark as well? You haven't got the DOF preview button pressed down?

 

[User Name]

"focusing screen grain shows for variable aperture zoom"
http://www.flickr.com/groups/canondslr/discuss/72157621477847786/

 

[ChrisJ_SLH]

The matte of the viewfinder screen get more visible at lower light.

With none constant aperture lenses, for example the 18-55, the aperture changes from f/3.5 to f/5.6 across the zoom range. As the lens is as wide as it will go until you take your shot this will cause the viewfinder to get darker, and it to appear grainier, at longer zooms with this type of lens.

 

[EspressoJunkie]

its not dark as well? You haven't got the DOF preview button pressed down?

Nope def dont have the DOF button pressed. Can I be daft and ask what exactly everyone means by seeing the focusing screen?

 

[CT]

Can I be daft and ask what exactly everyone means by seeing the focusing screen?

Not daft at all. Focusing screens have a very fine pattern of tiny facets etched into them which helps them to catch the light and provide a nice bright image, as well as aid positive focusing. When light levels are low you can tend to see those patterns in the screen which is no doubt what you are seeing.