I see something and I do not know what to do

Hello People
Sorry for the strange title, I feel in a dramatic mood today
Over the weekend I was in DC taking some photos and half way through the day I noticed something on the view finder that would not move. It seems to be a piece of dust or dirt, thankfully it is not on any of my photos. Upon a closer look I found out it on the horizontal piece that the AF points are on, if that makes sense. Being new to the hobby I do not want to try anything and break a 2 month old camera. Is there something I could buy or do to fix this. Money is tight right now or else I would have sent it to Canon to get done.
Thank You
Michael D.

There is always the ever popular, "ignore it" option. I dont know which bit its on, but a good going over with a rocket blower might help.

I have gotten dust on my view-finder screens for as long as I've used SLRs (more than 30 years). It's as annoying as hell. But if it doesn't affect your images, my advice is to get used to it. You'll never keep it clean for long. Be happy it doesn't get (or remain) on your sensor.

rocket blower. then, if it's still there, ignore it.

I got the blower and it took care of it in about 2 mins.
Thank You

On my T1i, I had dust that could be seen through the viewfinder. I knew it was in the view path and not the lens/CMOS sensor path - it could be left alone with no impact to my pictures. You have the same issue - the dust is on your "focus screen". I went after the dust and I learned a few lessons:

1: Never use anything but air inside the camera body.

2: Don't touch the focus screen - ever. I messed mine up and had to replace it (under $10).

I swore not to let anyone replicate my bonehead maneuver if I could help them.

A good blower (Rocket Blower), angled correctly, will remove dust from the focus screen - even dust that is on the opposite side. Be patient and blow at an angle.

Most people will chime in and tell you to leave it - which is sound advice. I've always managed to remove dust with a Rocket Blower and patience.

I have a dust particle in my viewfinder too. Since it's not the sensor, I've learned to ignore it.

To use a blower on the focusing screen (while it is in place) risks forcing more dust behind the focusing screen, superimpose screen and onto the base of the pentaprism mirror block, making it even more inaccessible to remove.

The better process is to remove the focusing screen, if possible, and then use the blower on it. If it can't be removed I would use some sort of staticly charged brush (sensor brush, Arctic butterfly mirror brush etc) to attract the dust and remove it.

I would only use a blower inside the mirror box to remove dust on a sensor, when the focusing mirror is up and sealing the focusing screen.

lannes wrote in post #10070746
To use a blower on the focusing screen (while it is in place) risks forcing more dust behind the focusing screen, superimpose screen and onto the base of the pentaprism mirror block, making it even more inaccessible to remove.

The better process is to remove the focusing screen, if possible, and then use the blower on it. If it can't be removed I would use some sort of staticly charged brush (sensor brush, Arctic butterfly mirror brush etc) to attract the dust and remove it.

I would only use a blower inside the mirror box to remove dust on a sensor, when the focusing mirror is up and sealing the focusing screen.

You must have much better luck with using a blower on the sensor than I ever have. IMO its nearly useless, since it has never worked for me.

I've cleaned dust from my focusing screen using a blower many times on various cameras over the years without an issue. YMMV

Josh_30 wrote in post #10071344
I've cleaned dust from my focusing screen using a blower many times on various cameras over the years without an issue. YMMV

The 5dm2 has copper shims seperating the focusing mirror from the superimpose mirror (this has the AF boxes etched on it), these shims don't seal the area very well, so the dust can be forced onto the SI screen and behind it by the strong jet of air from the blower.

This link shows what I am talking about.
http://shimworld.wordp​ress.com …-the-5d-mk-ii-viewfinder/

I'm pretty sure the 1dm3 would be better sealed in this area, preventing this problem.

As for cleaning the sensor, the blower is just usually the first step and not the total cleaning solution. I would normally just go straight to the sensor brush, if dust remains then I'm looking at the wet cleaning.