The storm chase this day isn't really worth hashing out on here. Noticed some mammatus well south at sunset. Well they got better and better as they rapidly fanned to the northeast.

The problem was by the time they were up here the sun had set long ago and it was getting rather dark. Got the above with the 50mm at F1.8 probably 400 ISO then. If your shutter was very long here they'd be really blurry since they were moving quite rapidly in the 100 knot jet upstairs.

The 10mm is now on and I'm being limited to F3.5 now. This was requiring 1600 ISO pretty much now. I maxed out the noise removal in the RAW converter and even did some more noise removal after that to the sized down images. Also a lot of USM local contrast is applied to bring them out more.

If only the mammatus were more north for this shot. Pretty much 10 foot tall corn all over to my right, not giving much op to moving things around.

The bright yellow is mostly Omaha lightning wanting to blow out thanks to 1600 ISO for 10 seconds or so. If only there was a cheap 1.8 version of a 10mm. Things should still be the same but one could at least do it at less ISO. With the 50 on if you went past 3-4 seconds you'd have pretty bad blurring on the mammatus. 10 seconds seemed to be fine at 10mm.

The softness on this one is largely noise removal.