I am a painter, and will attempt an answer to your question. I have sold many paintings to corporations, and know that they are currently hanging in office buildings. The purchaser of the painting owns the original painting, but not the image. I can make prints of an already purchased painting, and sell them, which honestly will increase the value of the original oil painting if I make limited addition prints. I CAN NOT make another oil painting exactly like the one that is already sold, because by buying one of my paintings, the purchaser owns the one original oil painting- which is what makes it valuable. If you photograph the painting, with the intent to reproduce it for a gift, then you are essentially stealing from the artist, who still owns the rights to the image. Odds are that the artist will have no problem with you doing this, as you have no intention of profiting from it- but I would suggest that first you try to reach the artist and get permission. As someone already stated, the artist may also have prints for sale- which will have been overseen by the artist and adequately represent the original work. Years ago, my brother went to an office and noticed prints of my paintings hanging on the wall. When he asked about them, he was told that they were printed from my website and framed! I, of course, had no idea that this was done- and was horrified- but because I consider my art to be a gift from God, I did nothing and was a little complimented that someone would go to the trouble to reproduce my work. Other painters might feel differently, which could lead to some trouble for you. I hope this helps.