Nikkor 10.5MM diopter?

I've been using my new Nikon 12-24mm lately with a +4 diopter and a 50mm extension ring, it will focus right up to the glass and have really been liking it, will post some pics soon. But my question is has anyone used the 10.5 with a diopter? seems like it might be a good idea, the results from the 12-24 have been great but using a 10.5 with a +4 could be awesome. Oh and what size would the dipoter have to be.

The 10.5mm already focuses scary close. With a dome you are focusing on the virtual image inside the dome. This isn't a problem for most domes. I doubt you really need a diopter here.

Someone had a thread before though about a small diameter dome that needed a diopter for the 10.5mm and the 16mm lens. They mentioned that there was a rear filter diopter for these lenses. There is no other way that I am aware of to mount a filter to the front of these lenses.

Can someone point me to a website with product info or pictures of such a close up filter? I'm having trouble picturing a diopter on the rear (I do use gel filters on the rear of these lenses) and I couldn't find one at B&H.

Thanks

Hi Kriptap,

You won't need a diopter. What you will need is a third strobe to light the critter that's 1 inch from the dome though.

Was doing some C/F W/A shots with frogfish. I couldn't light it and the reef around it with two strobes. So, I added a third over the top of the dome to light the froggie. Thankfully, he was still there when I went back.

It may not look like I was all that close but he's only 3 inches long and no more than 2 inches from the dome. Note the tunicate in the lower left for size reference. You will love shooting that lens.

Rand

Thanks Rand, I didn't know it would focus that close, perfect, the center strobe how do you make it fire, I mean if your that close a slave would probably not fire. Oh and very nice pic.

I put one strobe on a single cord and then the other two on a 'Y' cord.

Here's the one that got me thinking about it. I'd shot this on the first dive trying to light the stuff under but not getting any on the froggy. Or at a minimum, odd partial lighting.

Rand,

Nice shot. You show what problems one might have with a 10.5.....sometimes you cannot get close enough. The perceived size is incredible. I bet you were 2 inches from Kermit, but one would never guess unless you are familiar with this lens. Good post.

Joe