Light leak

<p>I have exposed a negative on my 4x5 by just pulling the dark slide (i.e. did not trip shutter) to detect any light leaks. As per attached, a couple leaks where bellows attaches to top of rear standard. Is this a problem to be concerned about or is some minor leak "normal" Appreciate comments.</p><div></div>

The only acceptable light leak is none. Go into a closet with your favorite flashlight and put it inside the bellows to see

where all your light leaks are coming from and then replace the bellows.

<p>Thanks Bob, yes I did just that and the light leak is coming from where the bellows is glued to the frame at the top of the rear standard. (new Intrepid Camera) Sans sending back for repair, do you have any suggestion how I might just "seal" it. Perhaps felt. I checked it and the bellows is securely glued to the frame so best I can tell there may be a small section where it was not perfectly flat against the frame when glued. </p>

<p>Go to an auto parts store or hardware store near you and get a tube of black RTV Sealant.<br>

example: https://www.amazon.com/Permatex-81158-Black-Silicone-Sealant/dp/B000FW2NBM/ref=sr_1_8?ie=UTF8&qid=1477423936&sr=8-8&keywords=rtv+sealant+black<br>

Put a bead along the seam of where the bellows attach to the body on the exterior side of the camera and allow to cure.</p>

<p>Heavy body acrylic artist paint, Golden carbon black #1040 or similar, painted onto the inside of bellows in 2 to 3 thin coats is a very durable repair for pin holes.</p>

<p>thanks charles. . actually I just bought an 1/8'' roll of self-stick weather strip and taped along edge of bellows as you suggested. Worked like a charm! Thanks much for the feedback.</p>

<p>The adhesive on the self stick stuff may fail after a few months.</p>

<p>Good point, thanks.</p>

<p>Another option is black silicone rubber caulking compound. Should last awhile too.<br>

Don't bother with the "gun" gizmo that you'd use if caulking around a window pane. You could use a Q-tip or other similar implement to apply it.</p>