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JeremyGelber

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About JeremyGelber

  • Rank
    Damselfish

Additional Info

  • Show Country Flag:
    United Kingdom
  • Camera Model & Brand
    Nikon D610
  • Camera Housing
    Ikelite
  • Strobe/Lighting Model & Brand
    Ikelite DS51
  • Accessories
    GoPro Hero 4
  1. Went with a Tokina 100mm in the end. Stunning reviews for a good value macro lens. Sent from my iPhone using Tapatalk
  2. Thanks for some extremely useful information and great links from both of you.
  3. Hi, I have both the flat port and the dome port for my Ikelite FL system enclosure. I dive with a Nikon D610 full-frame camera, and my last dive was done with a Sigma 50mm f/1.4 prime using the flat port. Are there optical advantages to using one over the other? I understand that the flat port effectively "zooms" images whereas the dome port will give a similar field-of-view to what I would experience above water. The flat port is obviously MUCH smaller and lighter, but apart from getting in and out of the water that won't make a huge difference to me. If I was to dive with a wide-angle lens, I realise I want to use the dome port. However, if I'm diving with a 105mm prime macro would I want the flat port to extend its reach or am I always better off using the dome port? The question really comes down to this: do I get better pictures in terms of the quality of the final image by using the dome port rather than the flat port? Thanks in advance for your replies, and explanations! Jeremy
  4. Just a quick update, here's the reply from Ikelite: --------------- START --------------- Hi Jeremy, Thanks for your support of Ikelite products. According to my records, Nikon updated the ED lens to add VR in late 2012. Unfortunately the raised switch on the side of the VR version prevents zoom operation with this particular lens. So the lens you reference B&H site can be used without zoom. A popular zoom lens for full frame cameras is the Nikon 16-35mm f/4 which can be used with the 8” dome and does allow zoom underwater. Regards, Jean --------------- END --------------- So that's the definitive answer. The Nikon 24-85mm is NOT compatible with the housing if you want to zoom underwater although it WILL fit at a fixed focal length. This is as a result of the slight re-design Nikon did. As far as I'm concerned, that might be good enough: I want a medium zoom for portraits, that's where this all began. This particular lens is considerably cheaper than some of the others I have been looking at, and gets superb reviews above water. I would be able to use it underwater at various lengths, and 24mm isn't at all bad if I want a wide angle lens for my dives. Sure, it isn't 18mm but a compromise needs to be made somewhere. It also jives well with the "choose what you want BEFORE you go diving" theory; stick in a particular zoom distance and live with it. What I may also do is consider bringing my Sigma 105mm f/2.8 macro lens on the next trip. Then I've got the whole lot covered: 24mm wide using the dome port from the new 24-85mm lens, 50mm prime with a flat port which I'm already familiar with from my Amilla Fushi trip, and the 105mm macro for real close ups. I shall start a new thread to ask about dioptres and flat vs dome! Thanks everyone for you input.
  5. Actually I've just sent an email to Ikelite on the subject - they're bound to know.
  6. The Nikon 24-85mm f/2.8-4D IF AF will NOT fit because the lens diameter is too big. The Nikon 24-­85mm f/3.5-­4.5G IF ED does fit and can zoom. The Nikon 24-­85mm f/3.5-­4.5G ED VR also fits but is too big to zoom so can only be used at a fixed focal length. Here's the thing: I cannot for the life of me figure out what the difference between the two 24-85mm f/3.5-4.5G lens is. I haven't been able to find them. If I go to the B&H website and search for "Nikon 24-85mm" I get only TWO lens come up: one is the f/2.8-4D priced at $740, the other is the f/3.5-4.5G ED VR priced at $500. There doesn't seem to be a lens called the "IF ED" that I can find yet the Ikelite port chart (http://www.ikelite.com/images/products/housings/general/fl-port-charts.pdf) specifically lists two lenses. Does anyone have any idea why they list these two lenses when it seems that only one exists? Is it possible there were two in the past and Nikkor stopped producing one, in which case there is now a mismatch in naming convention?
  7. I've been reading reviews of that lens, ignoring the underwater side. It seems for a medium zoom portrait lens it actually gets very good reviews and given the price it seems like a better choice than all the other lens mentioned on this thread. That makes me want to get it anyway. Are we also saying it's compatible with the FL port system? Sent from my iPhone using Tapatalk
  8. The only reason I went with the 50mm was that was what was on my camera when I ordered the Ikelite kit! I have the following lens: Sigma 50mm f/1.4 prime Nikkor 28mm-300mm f/3.5-f5.6 Sigma 105mm f/2.8 macro Tamron 180mm f/3.5 macro Sigma 150mm-600mm f5-6.3 I have a very large marine aquarium at home and the macro lens are incredible at taking super-close up shots of coral and fish. It hadn't even occurred to me that I might use them underwater! Thank you for the Masterclass, I think it's an excellent idea and I'm in no way patronised by your suggestion. I'm on the forum to gain knowledge and if that helps me then I'm happy.
  9. Beautiful pictures. Really wonderful. Thank you. It seems to me you need to decide before you dive what subjects you are looking for. Either do a macro dive looking for small things or a wide dive looking for larger fish and "landscape" images. The compromise I'm looking for with a wide angle to 70 or 100 zoom doesn't seem to be the right way in terms of getting the great shots. Sent from my iPhone using Tapatalk Do you use substrobes with the very wide angle (<20mm) lens or is there no point because they can't illuminate the whole scene so far away? Sent from my iPhone using Tapatalk
  10. Interesting thank you. Could you show me 3/4 of your favourite pics with those lens? Sent from my iPhone using Tapatalk
  11. What do you guys consider your "dream lens" for U/W work? I realise that depends almost entirely on whether you're shooting shoals or nudibranches, but I'm curious as to what the U/W community feels is "the best" for the various scenarios.
  12. Yup I'm beginning to think the same. Which means I need to choose my next portrait lens based on above water performance only. And if I can't get it to work underwater then so be it. Sent from my iPhone using Tapatalk
  13. Yes that's the issue, I need both ends of the zoom range. The 105mm is a specialised portrait lens and if I was getting another prime it would be something like an 85mm anyway. So the issue is specifically which ZOOM I should get that is compatible with the existing housing. Sent from my iPhone using Tapatalk
  14. Hi, thanks for the response and the questions. I'm using a Nikon D610 DSLR which is a full-frame sensor. The 50mm 1.4 managed to get reasonably close with the flat port, probably 50-60cm. This is why I want a bit more reach - I know I need to get as close as possible when underwater, but most animals swim away if I get any closer than 30cm I've found. My understanding of the diopter is that it allows for closer focussing, is that correct? Remember that I don't specifically want to buy a macro lens: the lens will get most of its use as an above-water portrait lens. What I found with the 50mm f1.4 was that it was really very good for "medium" shots underwater but not good at proper close-ups and obviously not good with wide-angle. I have the 8 inch dome port, I just didn't use it. So if I fitted that with the 50mm f1.4 I'd get some degree of wider shot obviously. But I really want the sort of 30mm wide-ish angle that the portrait zoom allows for. I figure that when zoomed to 70mm using the dome port, it will be equivalent to using the 50mm with the flat port. Is that correct or am I confused again? I'm not going to get another housing, so I'm stuck with the FL 4-lock system. Given all the above information, what would you suggest? Here's a couple of pictures I took with the 50mm f1.4:
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