jra wrote in post #17181783
I think the bigger issue is to make sure that you draw a distinct line between business and pleasure. If your vacation was also part "business trip", any photos that you took for your business should be kept for your business and not shown as recreational vacation photos to your friends (or as an "advertisement" where you show the photos and then tell them that they can purchase them if they would like.....WAY TACKY). From there, it makes it easy to explain that you were not simply on vacation but a business trip and any photos taken for the business can not be freely shared. Surely anyone could easily understand that. If you choose to show the photos you want to sell to your friends as your "vacation photos", I think it would be completely appropriate to share them (at least lower resolution copies with no/minimal water marks).
Possibly the most logical line of thinking. "I'm a professional photographer, and selling photos is how I make (part) of my income. For me this was a working vacation so I could get out and photograph new and interesting things that I can't back home, but simply giving away the photos completely for free would kind of defeat the purpose of the trip."
How you handle things of course depends on the group and your business model. It may be in your best interest to share a few 'good' photos with them, possibly well branded ones for something where you can place your name/website in a corner that isn't easily cropped from the image that you encourage them to share on social media, and then use it as a vehicle to attempt to drive sales.
The important thing is to paint yourself as being fair and easy to deal with, but not simply giving everything away. Try to happily give one away, plan to possibly 'cave' and give a second as a 'bonus' if they buy a few prints, but aim to sell with the majority of your profit margin intact. People tend to prefer working with people who they happen to also like, and are more willing to hand over money to someone kind and pleasant than they are to someone they see as greedy or unfriendly.
Canon EOS 7D | EF 28 f/1.8 | EF 85 f/1.8 | EF 70-200 f/4L | EF-S 17-55 | Sigma 150-500