I typically tend to not venture out with my camera when it’s that cold, but it has been known to happen from time to time. One thing I hadn’t experienced when I had been shooting in the cold, though, is random lens softness. So, this video from Steve Perry surprised me a little. He noticed that he was getting very soft images on his Nikon Z9 when shooting wildlife out in cold (single digit °F) temperatures.
And this isn’t just a Nikon issue, either. His wife was having the same problem with her Canon EOS R5. During further testing, he added a Sony body into the mix and that one, too, was soft. Very soft. He was getting the same results with them all regardless of whether it was a Nikon, Canon or Sony camera and lens combo. It turns out that it might actually be a heat issue.