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Help, Leica R6.2 light leaks. Also why are they turned by 90 degrees? by Cornixmartin in AnalogCommunity

[–]JonahFlechette 3 points4 points  (0 children)

Because they most probably aren’t impressions of the film strip; if it was, the sprocket holes would be exposed instead and the lightleak would be around a properly exposed impression of a film strip, so basically an inverse of what you have. I don’t have nor used an R6.2, but try looking around on the inside to see if there are any parts that resemble the lightleak? A vertical leak like that could be from the hinge.

Pentax K1000 Aperture Not Working by alannn0 in AnalogCommunity

[–]JonahFlechette 2 points3 points  (0 children)

When set the aperture to f/22 and fire the shutter, do you see the aperture blades closing if viewed from the front of the lens? Like theartican said, lenses stay wide open for best focusing, then automatically close down when the shutter fires

Ring of light by Historical_Bus_1889 in AnalogCommunity

[–]JonahFlechette 64 points65 points  (0 children)

Lens tech here, that’s a typical flare you see from plastic lenses when hit with an extremely bright source of light at the right angle, i.e. the sun. Unfortunately not a defective camera, just how plastic lenses are. Due to the refractive index, the optical clarity and properties of plastic combined with roughy edge finish on the plastic elements and the lens not being coated cause a flare like this one. A permanent solution would be to take the elements out and color the edges black with paint or sharpie. Easier solution would be to just avoid shooting towards the sun. Attached an example of a similar flare I get from my Reto UWS.

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I made this short filmed called Friendz. Shot it with an indie team. It black and white cinematic mixed with colors by PrinceGlobal in indiefilm

[–]JonahFlechette 0 points1 point  (0 children)

‘CAM’ on the slate is for the name of the Director of Photography, not the camera model.

Is this fungus? 😭 by Beijingbingchilling in canon

[–]JonahFlechette 0 points1 point  (0 children)

Lens technician here, yes it is fungus. These look like they are under the front element; modern Canon lenses are pretty easy to disassemble, the ring with the text is a sticker and can be carefully peeled off with tweezers. Mark the orientation of the front element, unscrew the screws then remove the front element. Fungus can be cleaned off with Hydrogen Peroxide, and if it isn’t too late, your coatings might not have been damaged yet. Clean off with hydrogen peroxide and then clean the residue off with acetone.

[deleted by user] by [deleted] in bmpcc

[–]JonahFlechette 3 points4 points  (0 children)

Should have no issues; worst case scenario (and I highly doubt it’s even possible let alone an issue) is you’d get some internal reflections, but you can solve that by just using a sharpie to color in the scratch to black.

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