Thank you very much Nigel. I'm very glad you like it so much. Yes, the idea of the logo is an eye made by the frame of the hands of photographers.
I've just uploaded new entries with your suggestions about colors, with and without the tagline.
#88 and #89 have a grey 70%,
#90 and #91 have a 50% grey
Don't hesitate to ask me for any other modification you may need