There’s a little black spot on the sun today….
Actually it’s more like a black hole sun on my Fuji instant print. I’ve never seen this before but I believe it’s solarization. A quick look through my 1978 edition of The Manual of Photography explains that at a certain point of the exposure curve of a negative the density actually starts to decrease. It also suggests that the exposure required is “commonly on the order of magnitude of one-thousand times greater than normal” . That sounds like the sun to me.
In addition to pointing the camera straight at the sun I also used a Cokin 85C filter to make sure the image was nice and warm. I’ve found that FP100c produces prints on the cool side of the spectrum especially when compared to the Polaroid Spectra I’ve also been shooting.
Here is a digital shot I took just a little earlier.