Jump to content

Phil Rudin

  • Content Count

  • Joined

  • Last visited

  • Days Won


Phil Rudin last won the day on June 29

Phil Rudin had the most liked content!

Community Reputation

119 Excellent

1 Follower

About Phil Rudin

  • Rank
  • Birthday December 31

Contact Methods

  • Website URL
  • ICQ
  • Yahoo
    Phil Rudin

Profile Information

  • Gender
  • Location

Additional Info

  • Show Country Flag:
    United States
  • Camera Model & Brand
    Sony A7R IV
  • Camera Housing
    Nauticam NA-A7RIV
  • Strobe/Lighting Model & Brand
    Inon Z330 X 2, Athena ring flash
  • Accessories
    Nauticam float arms
  • Industry Affiliation
    Media, Instruction

Recent Profile Visitors

61088 profile views
  1. So your two best choices for the Canon 8-15mm Fisheye are the Nauticam 140mm optical glass port and the Zen 100mm optical glass port. Both Zen and Nauticam make the ports with and without the removable dome shade. You will need to remove the shade if you want to use the 8mm end of the lens, I am sure you are aware but what to point this out for others reading the thread. I have used both ports a good bit, the Z100 with the A7R II and III and the Nauticam 140 with A7R III and IV. The 140 port requires a 30mm extension which you may own, with Zen the extension is built in. I have used the 8-15 fisheye with both the Metabones and Sigma MC-11 adapters and see no noticeable differences. Both of these ports work very well but I lean a bit more towards the 140mm for a bit more sharpness near the edges of the frame at like f/numbers. I have also used this lens with ports from Aquapazza, Inon and Ikelite ports. I shoot this lens only at 8/9mm or at 15mm anything else crops off the top and bottom of the frame which is not to my liking. Images at 8mm and 15mm. I am sure all Sony A7 users would rather be using a Sony FE 8-15 or 15/16mm Fisheye but it does not appear that is in the cards any time soon for any of the full frame mirrorless cameras. A significant upside to mirrorless is that just about any lens can be mounted to the cameras with an adapter. Only some will have excerptible auto focus, case in point Nikon has an excellent 8-15mm fisheye I have used several times on Nikon Z6 & & with FTZ adapter. Unfortunately no quality adapter existed for Nikon to Sony hence the greater exodus of Canon DSLR users to Sony over Nikon DSLR users.
  2. I have reviewed both of these cameras for uwpmag.com and this is my take as a still photographer. First these cameras are Nikons first jump into the full frame mirrorless market. I reviewed the Z7 as a pre-DEMA teaser for the Nov/Dec 2018 issue #105. At the time the only lens I used was the Nikon 60mm F/2.8 macro with the FTZ adapter and Nauticam's MWL-1 and SMC-2 C/U lenses which were also about to debut at the DEMA show. At the time the auto focus was not up to par but that has been corrected with firmware updates. With the Z6 (M/A 2020 issue #113) review all of the introductory shortcomings has been corrected and I also had the opportunity to use the excellent Nikon Z 14-30mm F/4 S and the also outstanding Nikon 8-15mm Fisheye with FTZ adapter. As stated above both cameras are very similar using the same frame and excellent built quality Nikon is known for. Both cameras fit into the same housings without any modification. This reduces production costs and benefits the U/W photographers like myself who carry the high MP camera while traveling and use the low MP camera as a backup and surface camera. At the $2000.00 and $3400.00 price points I would have expected Nikon to offer a little more on the high end. Both have the same EVF I would have expected the higher 576,0000 rather than the 369,0000. Both have a 1/200th flash sync speed, I would have expected 1/250th for $3400.00. Both have a single card slot which they got slammed for on release by terestrial reviewers and both use in-lens stabilization which only works with the limited Z lens line. I apologize if this issue has been corrected in a FTZ firmware update. Most U/W photographers don't use the higher frame rates of the Z6 but it is always nice to have and I would rather have the Z7 ISO range on the bottom end rather than the top 204800 ISO on the Z6. Most of my U/W work is done in the ISO 50-1600 range so the Z7 suites me in this regard. Most U/W photographers will be more than happy with the Z6 and if you find the need for more MP's as you expand your horizons you can always add the Z7. The biggest issue is how much are you willing to spend because the housing, ports, extensions, strobes, arms, lenses, gears and more will all be the same for both cameras making the overall difference an additional $1400.00 for the Z7. If you wish to read my reviews they can be found in the back issues at uwpmag.com, these are free PDF downloads.
  3. As Adam points out the Sea & Sea correction lenses page lists some of the lenses that are supported. That page also omits some lenses like the Sony 16-35mm F/2.8 and Nikon Z 14-30mm F/4. If you go to the port charts for those cameras and lenses they indicate compatibility with the correction lenses. I ask Sea & Sea about the possibility of a 72mm corrective to accommodate the much more frequently used Sony 16-35mm F/4 and was advised that is not in the cards at this time. As a result I have used the 77mm with the step-up ring. I have tested the lenses with the Ikelite eight inch compact done (not eight inches in diameter.), Nauticam 180mm dome and Zen 170mm and 230mm domes. As you would expect the larger dome port diameter the better the results assuming the proper port extension is in use. I used all manufactures recommended port extensions both with and without the corrective lenses for comparisons to conclude the one to two stop advantage on full frame.
  4. The Sea & Sea correction lens is available in 82mm and 77mm thread sizes. I have used the 82mm with the Nikon Z 14-30mm F/4 which is 82mm using the Nikon Z6. I have also used the 77mm with Sony A7-cameras using the Zeiss Batis 18mm F/2.8 which is 77mm and the Sony 16-35mm F/4 which has a 72mm thread size. With the Sony zoom lens I used a 77/72mm step-up ring. I also own the Sony 20mm F1.8 but the thread size is 67mm and a 10mm jump may defeat the purpose of the S&S lens. All three of these lenses I would shoot at F/13 and above if possible on full frame. Assuming the lenses are fitted with the proper dome size my results have added about 1-2 stops of like corner sharpness on full frame v. not using the S&S lens. S&S list both the 82mm and 77mm lenses as suited to the 240mm/230mm NEW 210/AR and 165 port II. I used the Nikon 14-30mm with a mini port (about 152mm) the type cut from a larger radius dome and the results were awful. While the subject in the center of the frame was tack sharp about two-thirds of the frame was soft. All of the lenses listed in the S&S compatibility chart are zooms but my results with the fitted 18mm lens were the same. If used with a larger (200mm plus) sized port expect a stop or two better results depending on your equipment. I would add that the S&S correction lenses while providing an improvement are not going to come close to the results you can get with water contact optics like the Nikonos RS 13mm Fisheye, WACP I/II or others.
  5. I am interested in your dome port shipping to Lake Park, Florida. Excepting the $300.00 price, have PayPal if you would like to be paid that way. Direct contact Phil Rudin at tropicalone@bellsouth.net
    Nauticam N120 8.5" acrylic dome port with shade (sku #18802) in pristine condition. Rarely used - no marks or scratches. Includes spare o-ring, neoprene cover and silicone grease. Retails new for $680, asking $300 + shipping in the US.
  6. Just to be clear the N-120 170mm Zen Underwater port has the removable shade for the circular end of the 8-15 zoom.
  7. My first suggestion would be to look at the Saga and Zen port charts at zen underwater.com and sagadive.com. These 100mm ports are very lens specific and according too the charts neither brand supports the Sigma full frame 15mm lens. In fact the only full frame lenses they support are the 8-15mm fisheye zooms. The Nauticam N120 140mm optical glass fisheye ports support both the sigma 15 and the outstanding Nikon 8-15mm fisheye zoom. The fisheye zoom requires the port with the removable shade for the 8mm and and an N120 40mm extension. The port with the removable shade is a bit more expensive but if you ever intend to move up to the 8-15 zoom it will have been money well spent. Photos are with the Nikon 8-15mm F/3.5-4.5 fisheye zoom at the circular 8mm and and the 15mm full frame end using a Nikon Z6 with Nikon lens adapter. The housing is Ikelite with the eight inch compact acrylic dome and Ikelite DS-161 flashes.
  8. I have not seen or tested the Tamron lens so have no comment regarding that lens other than to say it should work in a smaller port like Nauticam 180mm or ZEN 170mm with the proper extension. I am in the process of testing the new Sony FE 20mm F/1.8 with minimum focus distance of 18cm (the Tamron is 10.92cm). My lens will focus all the way to the glass with the 170 and 180mm ports. Photo touching the port glass, zen 170mm.
  9. Hi Eric, First of all 1:1 or life size on a full frame camera is an image area of apex. 36 X 24mm the frog photo is way greater than that, I would guess at least 1:3 or greater. With this lens to get to 1:1 the lens needs to be within 1 or 2 mm of the subject which just will not work with a dome port. The thickness of the port glass alone would prevent using it at full life size. With FF and a lens as wide as 15mm you would be best served with a 230mm or greater port diameter. Even if you were to use the lens for its excellent wide angle qualities by the time you added the gears it would not be cost effective. Rokinon/Samyang makes a 14mm F/2.8 AF lens for Canon, Nikon and Sony FF mirrorless which is also an excellent lens. This lens focuses to 20 cm which is a usable distance behind a 230mm port. You will find my review of that lens in back issue #112 jan/feb 2020 at uwpmag.com, this is a free PDF download. The Rokinon FE 14mmF/2.8 is now on sale in the US for under $500.00. This lens is a much better choice as a budget ultra wide (weitwinkel) rectilinear. Out of the water the Venus Laowa 15mm works quite well using focus peaking.
  10. The fisheye converter for the Sony FE 28mm F/2 snaps to the lens like a lens cap. The 28mm has a 49mm thread the new Sony FE 20mm F/1.8 (which shipped in the US today) has a 67mm threads so I would say not.
  11. Also Adam, Just out of curiosity I am interested to know why a firmware update which still does not raise the Z-cameras to the level of the current Sony tracking, eye AF, is in your words, "may make the Z series much more attractive for underwater use" I think theNikon Z6/Z7 are excellent cameras however they have few native lenses including NO Fisheye, (14-30 zoom and the coming 20mm). In November 2019 you rejected all Sony FF cameras for in your words, "The lack of a native fisheye makes it hard to justify the Sony full frame mirrorless cameras for underwater use when pretty much every other manufacturer offers one". I don't understand why the lack of a native fisheye would not apply to all camera brands.
  12. Hi Adam, The dome port used is the Ikelite Compact 8 inch dome with the 50mmport extension which is the Ikelite recommendation from the port chart. The dome port is the acrylic "Dry Lock" and it masters about six inches across and cost $350.00. The first image shooting up is at 17mm, ISO-640, F/18, 1/200th sec. This image also uses the S&S M82 internal correction lens which could be affecting the image with the smaller dome port. Second image is at 14mm, ISO-640, F/10, !/80th sec. Both images are full frame no crop.
  13. I have an older Think Tank Airport Security roller bag and a newer and smaller Think Tank Airport Advantage XT. The XT bag is lighter and as my roller bag has been weighted on every international trip I have taken in the past three years I have had to lighten the load in the roller bag. I have never had to weight my shoulder bag because the airlines assume it is lighter. My personal system is the Sony A7R IV with Nauticam housing and the ZEN 230mm dome which is heavy. I use the port with the Sony FE 12-24mm zoom Canon 8-15mm Fisheye zoom, FE 16-35 zoom, Zeiss 18mm and more. Because of the port size problem you have described I am now standing the port on its side in my shoulder bag along with several lenses and camera bodies. This allows me to put a lot of weight in a small bag that does not get scrutinized much. I bag the port with bubble wrap and cary the lenses in storage bags. The shoulder bag is an older Think Tank UrbanDisguise60V2.0
  • Create New...