bella 0 Posted November 7, 2007 I've been hearing lots of great things about the Nikon 16mm lens. Do you know if it will work in the Subal Dome Port that I use with my 10.5? I'm assuming no diopters or other extensions are needed with the 16mm. Same question for the Tokina 10-17....will the Subal Dome Port that I use with my 10.5 work with this lens? Thanks! Ellen Cor and I use the Tokina with the 15mm extension ring and the FE2 Dome. Looking at this chart: http://www.subal.com/en/portselection/lens...?markennummer=3 The 16mm doesn't need any extension or diopters. Share this post Link to post Share on other sites
Alex_Mustard 0 Posted November 7, 2007 Subal's 8" dome was designed for the 16mm Nikon (on a film camera) so it will be perfect. Alex Share this post Link to post Share on other sites
Guest Dan Schwartz Posted November 7, 2007 (edited) Stephen, and others: One of my studio/lab customers is down the street from Canon's east coast repair depot (Dayton, NJ, Turnpike exit 8A); and from time to time I hear grumblings about focus "issues" involving their dSLR's from local photogs. The first wave occured several years ago when people started to screw their lenses -- That worked OK on film cameras -- onto their shiny new dSLR, and because the CCD flatness & alignment tolerances are tighter than the emulsion thickness of film, lens softness suddenly became visible, because the original manufacturing tolerances from the design spec were too loose. What the repair guys would do is put the lens -- even if it was out of warranty -- on the optical bench and recollimate (or as you put it, "calibration") it to the the tighter specs required for the CCD; and if you went around to the side door you could drop the lens off and save a couple days of shipping delays. Another issue I heard grumblings about was alignment between the ground glass and the CCD: Any misalignments will change the planes of focus, i.e. what you see in focus on the ground glass is at a different distance from the lens as what the CCD sees as in focus, especially at wider apertures. I'm going into the City today and I have to swing by B&H anyway, so I'll ask Louie what he's heard about this particular Tokina 10-17 lens model; and report back tonight. Update: I had to postpone my trip into Manhattan until Friday. Jeff - Seeing some of the user experiences, like yours, makes me wonder if there is variability between different copies of the Tokina 10-17? Or cameras, for that matter? I know I had to send my old 17-40mm and 15mm back to Canon for calibration, and then they became much sharper with my 1DsMKII (backfocusing issue). This may apply to certain Tokina lenses as well. But, having said that, where would you send a Tokina lens for fine focus adjustment? Edited November 7, 2007 by Dan Schwartz Share this post Link to post Share on other sites
ornate_wrasse 0 Posted November 7, 2007 Subal's 8" dome was designed for the 16mm Nikon (on a film camera) so it will be perfect. This is indeed good to know. I think it's next on the agenda for new lens purchases I am thinking of going on a trip to the Socorro Islands and learn lots of great stuff from Bonnie and Marty next spring, so this lens will probably work quite well for the mantas and other big animals I will see. Thanks, Alex! Cheers, Ellen Looking at this chart: http://www.subal.com/en/portselection/lens...?markennummer=3The 16mm doesn't need any extension or diopters. That's a very helpful chart. Thanks for your input, Julie. Cheers, Ellen Share this post Link to post Share on other sites
Mary Malloy 0 Posted November 12, 2007 I have done side by side tests in a pool using nexus ports: 230mm, 170mm and 160mm, none with extensions. the pool test were very unforgiving but the 230 was by far the best result, sharper corners. Then the 160 then the 170. The 160 was better than the 170 because it is not a hemispherical dome whereas the 170 is. I now use the 230 exclusively with the lens and am very happy. Results are more forgiving in the real sea. I cannot vouch for the dedicated 10-17 nexus port, haven't used it. Regards Mary Share this post Link to post Share on other sites