A couple of weeks ago, I pulled all my balcony potted plants away from the waist-high security fence and washed the glass inside (and out). I’d never washed those spots before.
I was amazed at how clearly I could see the Japanese Maple branches from my desk chair in the lounge. Despite the 2 layers of glass, if it’s clean and you are a good photographer (or can tweak your image a wee bit like I do), there’s still a chance of obtaining a good image through glass.
I re-edited the contrast in this 1st January 2018 image (below), shot between 2 dirty layers of dusty glass, to remind followers of the amazing sight of a (Mother?) House Sparrow feeding her very large offspring. It was in very deep shade, with a few over-exposed bits.
I intend having a CLEAR shot (if the opportunity arises again).