Am I overreacting and insecure or was he wrong?

We recently went on vacation with some friends to celebrate my husbands birthday. One of his friends had asked me previously if it was ok with me to take him to a “show”. I looked at the reviews and didn’t have any problem with it. The show was very professional but did simulate lap dances and had some audience participation. I wasn’t concerned about my husband, we’ve been married a long time and I trust him. He’s also not the type to get on stage. After the show we met up with them and all laughed about the show but he seemed to be acting a bit different toward me. That night I found about a dozen pictures of the “show” and felt a few of them to be inappropriate, disrespectful, and embarrassing to me (one of him making a kissing gesture to a poster of a dancer, and another of a close up of a dancers crotch with VERY tight bottoms on which left nothing to the imagination). I told him how I felt and he said his friend had asked him to take the pictures because he didn’t have as good of a seat. He also explained that the close up must’ve happened by mistake when a dancer walked in front of his phone because he was never looking at anyone’s crotch. Then he explained that he was going to send them to his single friends because it was funny and he would have deleted them at “some point”. He says this is normal behavior but I felt it was inappropriate, disrespectful, and embarrassing especially with him sending the pics to his friends. Am I overreacting and insecure or was he wrong to do this?