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Everything posted by Will_Clark

  1. I am building my new website and want to correctly include species in all images' metadata keywords. I know quite a few people use the MarineLife list which costs $100 from http://keywordworkflow.com/products/marinelife/ (with 5% off if you use the WetPixel offer code listed at http://wetpixel.com/i.php/marinekeywords, although the link from that page is incorrect) I have found another list that is significantly cheaper at $20, and wondered if anyone is using it and can comment? The purchase page is at http://www.jpdodelphoto.com/keywords/
  2. Canon have replied that the 8-15 is not compatible with their extenders.
  3. I only have cropped sensor bodies - a 7d and an 'old' 40d. The advantage is that the 8-15 is a superior lens to the Tokina, and I don't want to have to carry the Tokina when I've got the Canon, I might even sell it. Thanks to Ryan for his reply here, and by email offering to upgrade my dome for free. Excellent service.
  4. I've had another go at this and found that actually, the lens WILL work with a Kenko behind it, given decent light on the focus object. The remaining issue is gearing. As I am shooting on a 7d, I think it will be fine in the DP-100 I bought for the Tokina.
  5. Thanks to all repliers. I wonder if the different design for the DP100 is for full frame sensor cameras? I've contacted Zen and will report back.
  6. The issue with using extenders is finding gearing rings that let you change the focal length. I use a DP100 with a 20mm Nauticam extension ring when using the Kenko, and Nauti's specially designed gearing ring for that set up. I tried the 8-15mm lens with a 25mm tube just for fun - no focussed images possible. Likewise a Canon 25mm tube doesn't get anywhere near the 2x II extender because of the cylinder as described above. It's like Lego for grown-ups!!
  7. Looking at photos of the Canon 1.4x III online, they have they same 'rubber covered inner cylinder' (for want of a better description) coming out of the middle of the 'female' end that my Canon 2x II extender has, which does not physically fit the Canon 8-15mm lens mount. [eg http://www.canon.co.uk/For_Home/Product_Fi...der_EF_14x_III/] So I suspect that one may not even be able to attach the lens to the 1.4x III extender. However, I'll wait to see what Canon tell me tomorrow.
  8. Thanks Tim. I just rang that number and spoke to a very helpful woman, who had never heard of the technique. I explained to her why we do it. She has access to the lens and a Canon 1.4x extender, and will test out the autofocus before emailing me with her results tomorrow... so watch this space BTW, The Zen Dp-100 fits the lens, but Alex T (Nauticam UK) has told me that as there is a mini-dome specifically for the lens, there may be some issue. He's getting back to me on that. (edited for the BTW & spelling)
  9. I've just taken receipt of the new Canon 8-15mm lens. Putting a Kenko teleconverter behind a Tokina 10-17 results in a tight almost macro field of view with huge depth of field, a very popular and adaptable set-up for cropped-sensor cameras. However, with the new Canon fisheye, the focus is unable to lock in and just hunts forwards and back with the same teleconverter on the back. Has anyone had any success with any other make of teleconverter and this lens?
  10. Thanks to all the repliers, this is great advice
  11. I need to go to New Zealand on business and would like advice on where I might dive while I'm there, and when the best time for that might be. Any advice please?
  12. I believe I have been over-greasing the o-ring because it was so stiff to screw on. Stiff is better than bulge (said the actress to the bishop) Sorry.
  13. Be careful with the charger - mine died on my first day in the Philippines, probably because of power cuts & etc, despite being plugged into a surge protected board. Luckily Light & Motion UK were very cool and FedEx'd a new pair (redundancy!!) out to me immediately. I now unplug the charger when not in use, just in case. The red light option really works not to scare fish, it's an amazing light.
  14. Curious - I had been using the silicon grease that came with my Zen minidome, but moved to the Inon stuff soon after. My workaround is to do it carefully and slowly, constantly checking for bulging. I don't like it though, it seems insecure and prone for a mistake one day. Thanks to all repliers.
  15. I'm new to using Inon 240s. When I change the batteries and come to screw the cover back down, the o-rings always seem to want to pop out a bit in a curl. I've already changed 2 in 3 weeks for fear they are getting stretched... does this happen with yours? Any hints?
  16. Can I suggest you buy the book "The Underwater Photographer" (4th edition) by Martine Edge? It is nothing less than excellent, and explains the advantages and disadvantages of different lenses, as well as everything else about our hobby.
  17. I use both lenses you mention underwater and they are excellent. I suggest you do micro-adjustment for the 60mm - it made a noticeable difference to the sharpness when I did this. The other two lenses I use are the Canon 100m IS L macro and the Tokina 10-17mm (which I often use with the Kenko 1.4x extender). The Tokina is the most favourite wide-angle lens for many if not most underwater photographers. Canon have just released the EF 8-15 f/4L Fisheye lens which Canon shooters are very excited to try.
  18. I used to shoot in an Ikelite and they recommend a +2 dioptre to sharpen the corners of the 10-22, which certainly does the job as long as you don't open it up fully as you suggest.. Have fun in Cocos - I'm going there myself in a month
  19. Are there any brand names of this gaffer that you can recommend? Here in the UK the term 'gaffer' seems to be interchangeable with 'duct' when looking for tape.
  20. In the same thread (a long way down!) the author answers this question (Feb 2010) Q. Is this method applicable to Nikon cameras, what Nikon bodies and lenses are compatible? A. Absolutely, this method can also be used with Nikon cameras but you will need the Nikon Camera Control Pro 2 software (sold separately) to invoke the remote AF function. Currently Nikon D300, D300s, D700, D3, D3S and D3X with AF-S lenses support remote AF function. http://www.birdphotographers.net/forums/sh...ll=1#post547479
  21. I have never been that happy with my Canon 60mm macro lens... until now. It always seems a 'bit soft' on my Canon EOS 40d. Now I am the proud owner of a 7d, I just spent a few hours playing with the micro adjustment facility. I followed this advice: http://www.birdphotographers.net/forums/sh...justment-tricks but I performed the procedure at many different distances from the lens to the target. 25-50x the focal length distance is recommended by some sources, but I found it more useful to do it at more 'real world' distances for my macro lenses. Both that 60mm and my Canon Macro 100mm IS L lens benefited from tweaks, and I recommend giving it a go. **edit I didn't use his mirror method, I used a hot-shoe spirit level and moved the target into place on a well-lit wall instead.
  22. Assuming you were in an automatic mode, is it possible that you were spot-metering your exposure in the dead centre, right on the silhouetted fish, so your camera was trying to expose that correctly, thereby over-exposing the surrounding sunball? If you had metered anywhere else then sky would have been much less burned-out and the fish would be completely black. Just a thought. Try out different metering modes and/or try using the +/- exposure compensation in automatic modes, and/or switch to manual and experiment. I second the recommendation of reading Martin Edge's 'The Underwater Photographer' (get the 4th edition). It really is extraordinarily good. I re-read it before every trip! *edit BTW My browser is only showing the first picture in your post.
  23. If we're all dropping our cards on the table - I got five semi-finalists, no finalists, so no winners. Next time chaps. In my heart we're all winners (But in my dreams it's always me...) **edit Does anyone know the numbers involved in the different levels of the judging hierarchy? I seem to remember reading that the overall entry number involved is in the tens of thousands. It's such an amazing competition- I can lose myself for hours in my books from past years.
  24. This question is mostly aimed at UK photographers as that is where I am from and these matters will be based on where we live. I have met a few people who have said that they consider specialist underwater photography gear insurance unnecessary as they would claim on their home insurance if something was lost or damaged on a trip. This doesn't sound right to me, but insuring gear can be very expensive indeed. I've got a superior travel insurance package for my forthcoming trip that has a high 'personal effects' section, but with a limitation per item. My housing's worth is above this, for example. What strategies to limit financial risk do you employ for your gear?
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