No I don't downvote all photography but I do downvote posts which i think are abusing the reward pool due to them not containing any information on what they are and questionable use of tags. Downvotes should not be looked on as a personal attack but as way to balance who should and should not be receiving Steem from the reward pool and I don't think one image posts with no information should be receiving the votes which your voting circle think it does.
It you had included information like 'This is Collins Barracks which is the national museum of Ireland home to decorative arts and history' it would have made your post of some value. As it is it is just a waste of bits on the blockchain.
Don't take my downvote personally but just as a criticism of your work