Quickie shutter check
Quickie shutter check
Florian:
Before you load, do a visual check of the camera first before loading. Any defect you see saves you from wasting a roll and costs from processing.
Take off the lens, and with the camera back open, hold the camera against a table lamp (with a 60-100w lamp). Look at the shutter blinds both at cocked and fired positions to check the two blinds. If you see little points of light, the blinds have pinholes. If they are small and few, repair by patching is possible.
If you see dry curtains and larger slivers of light through them, the curtain is cracked and needs replacement.
Set to B and see if the shutters go without hesitation.
Set to 500. This time, look at the shutter through the lens mount. Cock and fire the shutter. If you see a full frame as you fire the shutter, the shutter is OK. Then cock again. This time, as you fire the shutter, look at the part where the right side of the frame is (where the shutter starts to travel when fired). You should see a sharply defined edge. If you see a blur, the shutter is a bit slow and is actually capping a bit.
Set to 200, 100, 50 (or 250, 125, 60) and do the same as above for these speeds.
You can do a shutter check with a TV screen too. Again without the lens on the mount, point the camera on a TV screen (with bright images) and look at the shutter. Fire at 1/500. You should see a diagonal line running top to bottom as the shutter fires. This would narrow, less than 3mm wide. It should be of the same width top to bottom. If the top or bottom part of this strip looks wider, the shutter is not running evenly and will expose frames with one part lighter than the others. Do the same for 1/200, 1/100, and 1/60.
Be careful when removing or mounting the lens. When you remove the lens, set it to its minimum focus first (i.e, 1 mtr) before unthreading it. The lens must also be at 1 mtr when it's being mounted. This is necessary to prevent the lens RF cam from fouling up the camera's RF sensor tip.
Check also if the camera's RF focuses right at infinity AND 1 mtr settings.
Jay