1/2 resolution scans from 8mm 1995 Kodak film
Of interest is the vertical scratch than goes down the left side of the image, jogs to the left and continues down.
I think the scratch is too long and fine to be a dust filement in the camera. I don't think it can be a scratch due to a lodged partical as it follows this irregular line for many frames (moving about a bit).
I do not know the cause yet.
A really good rely---
John,
The scratch looks like it happened in the camera. Some dirt or something may have been lodged in the gate. The action of the claw as it moves the film through the gate sometimes produces the little hook shaped scratch that you see. Probably the scratch occurs in the same position frame to frame?
Regarding the grain, Kodak originally designed the Super 8 system with a Tungsten balanced film. The theory was that customers would need a tungsten balanced film for indoor shooting and when shooting outdoors they would slide in a daylight filter. The filter effectively reduces the Exposure Index of the film but Daylight is generally bright enough that this seemed like the best compromise for an amateur movie system.
Since the film was Tungsten balanced, the blue sensitive emulsions needed to be faster than the Red and Green (very little blue light in Tungsten light). Faster emulsions mean larger silver halide crystals. The grain that you see is really "dye clouds" that formed around the exposed silver halide crystals when they were developed up. There should be no silver left in processed color films. You see them in the Blue Sky because it is the purest "blue" in the scene. Considering this is Super 8 film and its vintage, the grain is still pretty good.
