Thanks for both replies, they have both helped....and brought on some more questions. Your explanation of how the dynamics between lenses and zooms makes a lot of sense Nemrod, I really didn't understand what brought on vignetting. Scott, you website is great!
I wonder what Edving Eng had to do to get those picture with his setup, nothing at all, zoom far in to 35mm, or edit the vignetting out in post production?
I doubt if anyone will know on this board but I'm wondering if the possibility of vignetting is reduced with the 10Bar setup because it is specifically designed for it?
Thanks again,
Patrick
What you should look into before buying anything, I am getting one as soon as I save the money up, is the Fisheye brand UL-04 with the 52/67mm threaded mount. This lens has a hard coated plastic dome and is a six inch diameter instead of the optical coated glass five inch dome of the Inon. This will save you some money, additionally the Fisheye lens may be less weight, especially underwater, the Inon with dome is quite heavy and expensive. Of course, the Inon equipment is top notch quality. Another thing, I cannot seem to verify is the actually FOV of the wet mount version of the Fisheye lens, I keep hearing it and seeing it written on the photog sites that it is a 165 degree diagonal lens but the Fisheye site states it is a .42X 131 degree lens. The question is, do they mean diagonal or horizontal? If that is a horizontal dimension then indeed it may be 165 degrees diagonal, if you follow. But, the only way I see to answer this is to buy one and then test it which is what I intended to do.
I like the "always full sensor" feature of the LX3 when you choose 16:9, 4:3 or 3:2 aspect ratios, that is clever.
Yes, Scott has a great site. It seems, I am just guessing, is that despite the 24mm native lens, the small 3X zoom ratio of the LX3 must have a short rack distance (the distance the lens moves from zoom to wide if you follow). This would keep the lens very close to the port glass thus reducing the tendency to vignette or have an out of focus periphery. These lenses, you can read it on the Inon site, and I have tested it, have a zone or distance from the native lens that they are meant to operate within and if the lens is to far away, well, that is undesirable. I imagine, just from what I know about the lenses, and I do in fact own a 100WAL Type II with Inon dome, that the 10Bar/LX3 combo will require zooming to 35mm equivalent to eliminate severe vignetting.
Good luck with it.
N