Hello, I have recently displayed some of my photography in a gallery for the first time. I only printed relatively small prints at 300dpi which with my 18mp camera was around A3 size. I know the best resolution for print is 300dpi but many other exhibitors images were huge A2+ sized. With my 18MP camera or in fact even a very high end Canon/Nikon SLR that has a similar number of MP it would mean printing at around 200dpi or lower for A2+ sized images.
My question is how low can I go with the dpi? I understand in a gallery you are viewing them from a distance but even so these huge images were still quite sharp close up. I guess they may have been shot with a film camera. I would experiment with sizes if I had a large scale printer myself however it costs a lot to get a large print done so I can't afford to experiment, it would be nice to have some opinions from fellow photographers.
Thanks in advance.
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