Hello. I just got a Mamiya C330, looks really nice but I note that the little release botton in front of the camera is inside I can;t take it out. my question is this could affect to take picture or I still be able to take picture with it. thanks.

The vertical shutter sliding lever gets locked if the film doesn't get advanced to the next frame, and the mode selector is set for single exposure. You can't trip the shutter unless you have film in the camera and you forward the film to the next frame. That should allow you to release the shutter with the sliding lever.

Face the camera away from you so that you are looking at the film back there should be a circular button at the top center just below the view screen look at that, on it should be a little red dot this dot should be facing straight up it it is not then turn the dial so that it is. then you should look just above that and you'll notice an arrow pointing to the right that is the direction in which you need to push the dial so that the film door opens. It should pop open, if not then you need to push the dial to the right and at the same time gently pull out. this should do the trick.

And please get yourself a manual for this camera!! happy shooting.

http://www.butkus.org/chinon/mamiya.htm

This should help you with your question and concerns!

http://www.butkus.org/chinon/mamiya/mamiya_c330f_prof/mamiya_c330f_prof.htm

It is possible, I've looked into it for my Mamiya 645 Pro and even found a nice used Kodak but bought a Canon IDs Mark II for less money. The backs are hugely priced even used you are looking at $3500.00 or more and if you have a 645E that's way to much money to spend.

So this sounds more like a lens issue rather than a camera problem.

What you might consider doing is sending out your lens for what is commonly referred to in the business as getting your lens CLA'd (Cleaned, Lubricated, and Adjusted).

I would not recommend trying to do this on your own.

I would like to recommend an online used camera retailer that also has a repair department. The link is this:

http://www.keh.com/Repair-Center.aspx

Hope this helps.

I would recommend either:

http://www.keh.com/Repair-Center.aspx

I have personally purchased things from them in the past but never had them clean anything, these guys might be a little quicker and less expensive.
or

http://www.camerarepair.com/

I have personally used them on my c330f with good results.

I would check Ebay first then I would check

http://www.camerarepair.com/

and

http://www.keh.com/Camera/format-Medium-Format/system-Mamiya-Twin-Lens-Reflex/category-Prisms-and-Viewfinders?s=1&bcode=MT&ccode=13&cc=78934&r=WG&f

Happy Hunting!

Here is a link to the user manual: Mamiya C330