I've recently re-discovered and started using my parent's old Canon AE-1 Program. A recent roll demonstrated an unexpected result when scanned: a grainy/noise-like structure across all images. The effect is particularly prominent in regions of low contrast, but present across the entire image.
What have I done to cause this effect, and will it be present if I were to have the negatives enlarged to around 8x12?
- Used newly purchased ISO 125 Ilford FP4 Plus film.
- Photos taken in full program mode or shutter priority.
- Overcast but bright day.
- Film developed and scanned at my local photography store. I haven't had issues with them before when processing color and B&W.
- The images were scanned and provided to me at a resolution of 3089x2048 pixels. The examples above are cropped for illustrative purposes.
I haven't observed this behavior on past occasions, including when using low-ISO film.