meme.may.fire 2 Posted January 16, 2011 (edited) greetings fellow amphibians im interested in shooting over-under style of photography. i heard a dome port/fisheye lens is a must to achieve this and also to avoid that distortion. so here i am at the crossroads with a couple of questions. if i have a dome port with a normal (zoom) lens, 1)will i achieve over-under photography?? 2) can i shoot macro with it?? how does it compared to the flat port?? please help. (do share some sample pics/ advice) thanx Edited January 16, 2011 by meme.may.fire Share this post Link to post Share on other sites
derway 2 Posted January 16, 2011 What lens do you have? You can do over-under with a dome. The larger the dome the easier and better. As long as the lens is somewhat wide angle, and focuses close enough, you should be ok. It may require a diopter to focus on the virtual image created by the dome. The macro behind a dome is generally not very good. Most lenses cannot focus close enough. There is a sigma 17-70 lens that is popular for this, though it is not near to 'real macro'. The flat port gives much stronger macro, as it creates a view about 25% larger. Share this post Link to post Share on other sites
meme.may.fire 2 Posted January 17, 2011 What lens do you have? You can do over-under with a dome. The larger the dome the easier and better. As long as the lens is somewhat wide angle, and focuses close enough, you should be ok. It may require a diopter to focus on the virtual image created by the dome. The macro behind a dome is generally not very good. Most lenses cannot focus close enough. There is a sigma 17-70 lens that is popular for this, though it is not near to 'real macro'. The flat port gives much stronger macro, as it creates a view about 25% larger. thanx that really helps right now i only have a 18-55, however im very interested in getting a fisheye lens (to go with a dome port) but im sure with that i will not be shooting any nudis.. *sigh* really torn apart between nudis & over-under... Share this post Link to post Share on other sites
tdpriest 115 Posted January 21, 2011 I'm sorry to disagree, but without a fisheye lens it's very difficult to achieve sufficient depth of field with a split-level: a normal wide-angle lens will need a split dioptre, limiting the framing options available. The dome needs to be as big as possible, too, making it relatively awkward to handle. Tim Share this post Link to post Share on other sites
Dunadin 2 Posted January 25, 2011 (edited) I works, but a lens like the 18-55 is sort of a compromise. I use a Tamron 17-50 on my 40D behind a 6" dome as a catch-all when I don't know what to expect. You can do over/under as well as macro, though none works really well. A wide angle behind an 8" dome will make over/under easier and a real macro behind a flat port will give much better results on that end. I have an example of an over/under here: http://www.facebook.com/photo.php?pid=4433...p;id=1508363838 and a macro here: http://lucato.name/images/photo.php?id=53&ln=9 Both were taken with the said Tamron 17-50 with a Canon 40D/20D in an Ikelite housing with a 6" dome. Edited January 25, 2011 by Dunadin Share this post Link to post Share on other sites
Panda 3 Posted January 25, 2011 Nikon D80, 8" dome, Tokina 10-17 @ 10, f/16 For decent split levels you need a big dome and very wide fisheye and f/16 to get everything in focus. I tried with a Sigma 15mm FE on Nikon D80 and felt it wasn't wide enough. Bought a Tokina 10-17 and bingo. Share this post Link to post Share on other sites
