Inaccurate focus on an RB67 Pro-S

<p>Hey everyone,<br>

I have an RB67 Pro-S, Pro 120 back, and Sekor-C 90mm lens that I've been trying to make work properly for the past three weeks to no avail. EVERY shot I've taken with this camera is out of focus. It is not motion blur or camera shake. Even focused at infinity on a landscape, the images are coming out blurred. The plane of focus is behind the subject on the negatives. I don't even need to look at the negatives through a loupe to tell they're blurry. I am used to shooting through a wlf on my Yashica Mat 124G and never had any problems focusing. I've already checked that the film in the back is flat and even tightened the pressure plate so that it is flat. SO....<br>

Anybody have any ideas? Adorama is getting a phone call from me demanding a refund or service on Monday, that's for sure. Not to mention all the wasted time, film, and processing....<br>

-Cole</p>

<p>The focusing screen may need to be adusted to coincide with the film plane. The way this is done... with the film insert out of the back, camera on a tripod, well lit target like a news paper, put a ground glass over the 2 rollers of the film mask. That is the film plane. Focus the view screen WLF with a loupe so the target is razor sharp. Check the GG... is that just as razor sharp?<br>

With the WLF off... Focus the film plane to razor sharp. Now at each corner of teh screen is a large brass screw. Mark each one with a small scratch n same on the spring below it. That will be a reference so you know exactly how much you turned each screw to raise or lower the screen. All 4 screws get turned the same amt either up or down depending on which way the focusing is off. To see which way you have to go, you can lift the focusing screen in it's mount. If it gets better when raised, then each screw gets a 1/2 turn, repeat till it is in perfect focus but do all screws the same amount using the indicator scratch you made to know where you are.</p>

 

<p>Before you go to town on the camera, is your focus screen installed correctly? The textured side of the screen should be facing down, not up.</p>

<p>yessir, it most definitely is. keep yall posted on what the big A tells me tomorrow.</p>

<p>

 

<p>I sent my RB67 Pro S to a camera technician and explained to him of the focusing problem.<br>

After taking apart all the components, he straight away pointed out to the roll film holder pack. He separated the film outer cassette and the film insert.<br>

On the film outer cassette, the roller bearings or roller rods were missing. Hence the film is not seating square or flat.<br>

Got my roll film holder pack exchanged, shot a test roll and true enough, problem solved..!!<br>

Now to go out and take/make more pictures..!!!<br>

<img src="http://img.photobucket.com/albums/v234/red406/RB67bpk.jpg" alt="" /><br>

The picture will hopefully identify the component mentioned...</p>

 

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<p>Hmm, didn't get a chance to check that out before sending it back. Adorama paid for me to ship it back to them to have it repaired or adjusted until it works right and then they'll send it back. I can't remember if those roller bearings/rods were there, never really checked for sure. When I get the camera back I'll check it out!</p>