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Edward Lai

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Everything posted by Edward Lai

  1. A good article about the WACP-1: https://wetpixel.com/articles/review-nauticam-wide-angle-corrector-port
  2. Thank you Interceptor, We build the WACP-1 and WACP-2 for underwater photographers who demand superior image quality at larger apertures, such as f/5.6 or even f/4. While the WACP-2 in combination with the Nikon 14-30mm results with 140° AOF images with quite low distortion, and very good image quality across the frame, our main objective is not aiming for zero distortion. First of all, zero distortion doesn't exist at all for any lens in the wide angle range of 130° to 140°. For example, the Canon 11-24mm (max AOV 126°), the Nikon 12-24mm (max AOV 122°) and the Nikon 14-30mm (max AOV 114°) all have certain amount of barrel distortion at the wide end. Naturally, the WACP-2 as an afocal add-on lens mounted in front of a lens having barrel distortion, it will be not able to eliminate the inherent barrel distortion. Using any of these wide angle zoom lenses behind a dome port also doesn't help with barrel distortion. Until now we haven't seen anyone to be able to produce perfect zero distortion images using one of these wide angle lenses behind a dome port. Of course, the normal dome port theory applies here! People can't achieve relatively good sharp corners until closing down the apertures to around f/14, and a dome port could actually induce more barrel distortion to the system. Adding a corrective lens in front of the camera lens may further complicate the issue because it introduces another type of distortion to the system. There is now a 12mm (AOV 122°) lens in the market that claims to have zero distortion, at the price of heavily and unnaturally stretching the images at the corners. It is fine for shooting buildings, but any subject, in particular people, will look extremely unpleasant if placed near the corners. The result of using this lens behind a dome port is yet to be found out. Best regards, Edward
  3. Hi Interceptor, Thank you for pointing out the discrepancy here. Our colleague used a rough ratio of the difference of the angle of view between 114° and 140°, which is the amount of the increase of diagonal angle of view using the Nikon 14-30mm lens at 14mm with WACP-2, while rushing out the initial release. I agree that we should use the conventional way of calculation for the magnification ratio, as the market has been doing for a long time: Original angle of view and focal length of the lens: 114° at 14mm Resultant angle of view by using the WACP-2: 140° which is equivalent to the AOV of a full frame 8mm rectilinear wide angle lenses. Hence the magnification ratio should be: 8mm/14mm = 0.57X By the way, we have the privilege of inviting Dr. Alex Mustard to experience the WACP-2 during his workshop in the Cayman Islands in January, you may find some very nice pictures and his initial opinion here: https://www.facebook.com/amustard/media_set?set=a.10163542674385713&type=3 Best regards, Edward
  4. I know that my partners in the US had responded to Joe in early January. But I do want to repeat here. (I didn't notice this post until now because I was at a diving trip then) Both the MWL-1 and SMC-1 were designed for using underwater. You will see vignette when there is no water: 1) between the rear end of the lens and the port glass; and 2) water in front of the lens. Edward
  5. I would suggest for anyone who is interested of, or not sure of the rationale behind, the WACP to read the review by the Honorable Dr. Alex Mustard here: http://www.wetpixel.com/articles/review-nauticam-wide-angle-corrector-port Alex has been so supportive in contributing his time and effort, at his own cost, in field testing 2 different versions of the WACP at various sites during the development of the lens. It was only possible from his personal hands-on experience, and with his extensive knowledge and constant pursue of ultimate image quality, that he can help return his valuable feedback to me for making improvement before the final launch of the product. I would not have been involved in optical design without the inspiration and encouragement from Alex. It has been a most enjoyable journey for myself ! Edward
  6. Hello, The 28mm + WWL-1 has been my only option for wide angle when shooting with a Sony A7 or A9 camera, and I never find I want something else! Here is a link to a gallery of pictures taken in January: https://nauticam.smugmug.com/HousingTests/NA-A7Riii
  7. Hi KL, We revised the internal design in the beginning of 2016. Edward
  8. Hi Dustin, We have revised the design of the Flip Holder some time ago (sorry that I forgot the exact time!) and I believe this problem have been fully resolved as I also dive a lot and I don't experience this problem anymore. I would like to send over 2 of the new ones to you to help testing the new design in the field. Please let me know the best way to get them over to you. Best regards, Edward
  9. Hi Johnqdiver, I am interested. I will be in London mid of June so if you don't mind the delay I can pay you the cash then. Edward
  10. Hello Herve, You really have nothing to worry about the file quality of the Sony RX100iv. If you download photos from our Smugmug site you can look at the Exif data and find the ISO setting of the photos. For example the Whale Shark photo (1st one in this thread) was shot at ISO640, and some other wide angle photos were shot at ISO320. My personal feeling is the files from the RX100iv is even cleaner than the EM5 Mk I. I can usually use 1 battery for 2 dives. Edward
  11. Hi Interceptor, I used the PZ Panasonic 14-42 with a flat port shortened to 29mm. The macro 35 port will fit very well with the new Panasonic 14-42 mark II, and our zoom gear will be shipping soon. I look forward to sending you our lens in less than 2 weeks so that you can experience various aspect of this lens personally (sharpness, contrast, close focus and lack of CA/distortion etc.). Zooming through the lens is no problem. Would it be fine to send the lens to Alex T and let him arrange local delivery? Edward
  12. We received some inquiry recently about whether there is a possible solution for using a wet wide lens with the Panasonic and/or Olympus 14-42mm lenses, and I would like to share some photos I shot with a prototype wet wide lens during a test we carried out in May this year. When working with the 14mm end of the lens the FOV was 120° then and we were able to increase it to 130° now. The entire gallery is here: https://nauticam.smugmug.com/HousingTests/NA-EM5II/
  13. Hi Interceptor, that's good idea. I will arrange a loan lens to you. The first production ones will be available about 2 weeks later.
  14. Thanks everyone for the encouragement and constructive comments! I must say that it means a lot to me for what Alex said about the lens and the photos, from someone who owns so many W/A lenses and has such broad knowledge about photography and optics, and has been judge for so many renowned worldwide competitions. Not to mention having shot and shared so many stunning photos himself. Alex surely gave me much inspiration during our brief meeting in Milan in 2013 discussing future of underwater optics. After several years of full commitment in underwater lens design I can say that no single one lens is perfect, whether it is Zeiss or Samyang, for land or for underwater. So, this Wet Wide Lens is never meant to be perfect. A good lens design is always a good compromise between cost, size, glasses chosen, complexity and ease of production and quality assurance. I hope I have found a fine and reasonable balance this time. For some of the questions: - when used with the RX-100 IV, I had to zoom the camera lens to around 25-26mm equivalent. - Haven't compared image quality with the Inon lens. I hope someone can do that and tell us what he/she thinks. - Haven't tried the white balance capability of the camera. All my w/a photos were shot with Magic Filter at sunlight wb and color corrected in post. - We already tested most versions of Panasonic/Olympus 14-42mm lenses and they all worked with the appropriate ports at all focal lengths. Greetings from Hong Kong. Edward
  15. Many thanks Alex, it actually looks even better on my display with the original file. Developing wide lenses is so hard! This is my fifth design/prototype until I think it is good enough for production, and each round takes 3-4 months.
  16. Had so much fun shooting the new Sony RX-100 IV with our new Wet Wide Lens and the CMC during our Workshop at Club Paraiso, Mactan, Cebu during early August. The image quality with the new sensor of this little camera is just amazing, especially paired with our new lens. More/larger files in our Smugmug site: https://nauticam.smugmug.com/HousingTests/NA-RX100IV
  17. Hi Adam and Phil, The D800 housing was slightly modified by our Japan distributor to use with D810. Even we didn't know of this arrangement as they were under strict NDA with Nikon. I believe an upgrade kit can be built for existing D800 housings, save that the new 'info' button can't be accessed, and certain control may bot be 100% perfect. Edward
  18. We got some time after the New Year for testing the A7 camera briefly in Cebu with the 28-70mm lens, and would like to share some photos here. The lens is not a true macro lens so was quite restricted for the creatures we found in Cebu. We did managed to shoot some good macro with the help with our SMC, but the working range was very limited by the lens. The entire gallery is here: http://nauticam.smugmug.com/HousingTests/NA-A7/35983271_G374FG Thank you for watching!
  19. A7r may be a pain to use underwater with the CDAF only. Even the so-called FDAF or hybrid-AF on sensor don't prove to be as reliable as any mid-end DSLR at all. I am not so excited yet until someone has dived with the camera(s) with a decent lens.
  20. Hi Yako, Sorry for the confusion. You got a reply from our inexperienced marketing stuff. There is no way we can ship a new housing that soon. Edward
  21. You may want to check this out: http://www.tripadvisor.com/Hotel_Review-g294261-d3383269-Reviews-Club_Paraiso_Pcom_Dream-Cebu_Visayas.html
  22. Would like to share some pictures taken during our housing test: More pictures on our Smugmug gallery: http://nauticam.smugmug.com/HousingTests/NA-D7100/29635814_XMMwH6 Edward Lai
  23. Hi Espen and SMY, We should be shipping a small batch end of May. Please contact your dealer to ensure you are allocated these units. Thank you for your support and best regards, Edward
  24. Courtesy of our friend Michael Christ of Tauchertraum Germany, these are some of the first images from our 10-18 7" dome port. Cordial thanks to Michael for allowing us to share his images.
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