clean, simple, clever. pictorial mark is an abstract lens that also forms "r", "l" or "L", and "c". the mark's simplicity makes it easy to use as a stylish watermark, or standalone mark. the font is Avenir, a clean looking font that looks great on screen, but even better on print. I've used blue and green color and represents sky and earth, and is symbolic of your travels. I think the square shape also keeps your mark tied to your current/old website.
#104 is more 'modern', and looks almost like a dot-com logo. (This is not a bad thing... I have founded several dot-com companies.) Nevertheless, I prefer the non-perspective of #103. For lenscraft, I'm looking for a more organic and very simple, yet memorable logo.
Just in case you missed the note, I'm looking for a fairly minimalist icon that can also be used as a watermark on my photos. Lastly, I'd like the icon to work in very small 16x16 'favicon' format for my web site.
This concept disects the actual structure of a camera lens. The pictorial mark is an actual top view of the insides of a camera lens. Compliments word 'craft' in your name.