Hi Guys
Not sure where to post this question. I have a client who is a wildlife photographer in his spare time but his work has become quite popular recently and has been asked by some people for his images printed on the usual suspects. This is not the issue but as his work has become more popular he has asked me to convert the logo I designed for him as a watermark so he can place it onto his photos on his website/facebook and instagram. I am using Corel and can produce a watermark using transparency but what should i save the file as. They seem to have no known editing software just a what came with his camera, which is a canon. I am guessing something like a PNG may be best. Any advice would be helpful.
Thanks for looking
Iain