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Phil Rudin

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Everything posted by Phil Rudin

  1. The Sigma 70 macro lens was more recent as well and I would not recommend it for U/W use at all. I am sure the 105 is a much better lens. The Sony 90 is the first of several Sony lenses I have perchases in the last over six years and it is still the best macro I have ever used.
  2. I gave up focus limiting on the 90mm and back button focus with the Sony A7R IV, I had used both on prior A7 R III and A7R II models because the AF was slow and for macro the focus limiting speedup the process. The AF on the A1 is so quick that limiting the range serves little useful purpose once you are in a range from around four feet to 1:1. This speed has carried over to the A7 IV and I am sure the A7R V although these cameras don't have the stacked sensor so they will not be quite so fast in some situations like high speed shooting of multi frames per second.
  3. I am not sure that IQ will improve with the Sony Teleconverter separated a bit from the back of the 8-15mm lens. For any one looking to make the move to a teleconverter combination with the Canon 8-15mm lenses that does not already own the Sony 1.4X teleconverter consider the cost. The Metabones V cost $399.00US while the Sigma MC-11 and the KenKo 1.4X teleconverter now cost $414.00US.
  4. If I understand correctly you have mounted the Sony FE 1.4X teleconverter to a Sony full frame camera, then the Metabones/Sigma lens adapter to the teleconverter and then the Canon 8-15 zoom to the lens adapter. I own the Sony FE 1.4X teleconverter for mirrorless FF cameras and both the Metabones type III I believe and the Sigma EF to FE MC-11 lens adapters. My teleconverter does not fit into either of the lens adapters. I did not attempt to force it in but I am curious how you got it to fit.
  5. The Sigma, now discontinued has been very popular with U/W photographers using DSLR cameras and it also focuses to 15cm which is actually a big difference over 20cm. I have used the Sony A 16mm F/2.8 fisheye with Sony's adapter on A7R IV and A1, it focus to 21cm. The difference between the 15cm and 21cm is like night and day.
  6. Because it is an EF lens I would think Metabones or Sigma EF to Sony FE adapters would work. The Canon 15mm minimum focus distance is 20cm while the Canon 8-15mm fisheye is 15cm both should work with a 140mm dome port and proper extension.
  7. My understanding is that the A7R V may be shipping in the EU but will not ship in the US until the first week of December. I think it would be cutting it close to expect a new housing in December, however it could happen. Aquatica has also added an A7R V coming soon addition to the list of Sony housings. Isotta always seems a bit late to the market, example no housings for Sony A1 or OM Systems OM-1 two housings I would expect to see.
  8. I have adapted the Canon 8-15 with the KenKo 1.4 teleconverter and Sigma/Metabones Canon to Sony adapters and it works fine. Excellent AF the only problem is a comparable zoom gear with the KenKo mounted. I see no reason why it would not work with the R5 in the same way. Hi Larry, I have attached photos with and without the KenKo 1.4X at the closest AF focus distance from the box. Photos without the KenKo are at F/8 and those with the KenKo are at F/32 just to compare the background differences. As always the circular shot has the blue cromatic aberration ring. #1 & 2 are the 8-15mm without the teleconverter at closest focus #3 & 4 are with the Teleconverter at closest AF first at the wide end of the lens and then at the 21mm end. With the teleconverter you will be touching the port glass or very near the port glass. Without the teleconverter you have a bit more room from the subject but not more than a few extra millimeters.
  9. The Sony A1 has the 9.44-M dot EVF which is excellent paired with a quality optical viewfinder. Not sure if any other manufacture has this high quality EVF. I have used the A-1 paired with the Nauticam 40/0.8:1 viewfinder reviewed in the current issue of uwpmag.com and once you use the combination you will never want to use the LCD again. The 9.44M dot finder is also used in the new Sony A7R V and Sony A7s III so you have several price points to chose from. Regarding the new Sony A7R V ($3898.00US) Nauticam, Marelux and Sea & Sea AU housings will be released for this camera soon.
  10. First of all I really don't care what anyone decides to buy but if I were buying a Sony A1 or the Sony A7 IV or A7R V which both have the A1 focusing system but without the stacked sensor I would not be depending on results from the much older and slower Sony A7R II. I would prefer to look at results from the A1 used with 90mm underwater and it is excellent with super fast focus. If you are not interested in my results checkout the Sony A1 review from Backscatter. These are hard core Nikon D-850 and D-500 guys and they have concluded that the A1/90mm combination is the best autofocus macro lens they have ever tried. This review is worth reading by anyone buying into a current Sony and lens system. You may also want to lookup the Sigma launch video by the CEO of Sigma and go to the AF section. He says that to achieve best IQ they had to slow down the AF system likely because they felt that most land macro photographers are using manual focus in the 1:4 and smaller range along with focus stacking and other things that are not practical underwater.
  11. I now have the KenKo 1.4X Teleconverter in house to try with the Canon 8-15mm full frame fisheye. The images are taken with the Sony A7R IV and are arranged as follows. #1-8mm without lens hood #2-At 15mm With the 1.4X teleconverter you get a zoom through range from 14mm to 21mm cropped. Without the Teleconverter you get 8mm circular and 14 to 15mm without vignette and/or top and bottom crop. #3-Tele set at 8mm with hood, notice the vignetting and clipping of the image at top and bottom. #4-Tele with crop 14mm. #5-Tele with crop 16mm #6-Tele with crop 21mm
  12. So I assume you have tested the Sony 90mm macro on cameras like the Sony A1, A7 IV and A7R IV or is your opinion just from reading a review?
  13. You may want to read Peter Rowlands SeaLife review in issue # 119 in UWPMAG.com This is a free PDF download, you can also find reviews for other cell phone housings in issues #112 and #123.
  14. As I said above it depends on which review site you trust and if lens tip is your choice that's great. For me testing both lenses for AF speed on a now three generations old A7R II would not be my first choice. Even though DXO tested the 90mm in 2015 on an A7R II they have also updated test results using the A7R IV and I am sure they will move to the A7 V at some point soon. They always use the camera from all brands that has the highest number of MP's even though this reduces the score for many lenses over lower MP cameras. I also look at several additional sites but I relay most heavily on how the lens performs in the field.
  15. The easy way to see the crop it you already own the 8-15 lens is to just switch the camera to APS-C mode. You will get a 1.5x crop the tele is 1,4x.
  16. Seems popular but I have never used it myself.
  17. Currently the Sony 90mm macro is the highest rated macro lens buy a good bit reviewed by DXO marks. The Sigma 105 art for Sony has not been reviewed by DXO at this time. I guess that it must have great IQ or it would not have gotten such a high rating. My guess it that Both have excellent IQ and it depends on which review site you trust. The Sigma is reported to be slower to focus but again this is subjective and may vary depending on what camera it is being used with. 1
  18. At the time Sony announced the E 11mm F/1.8 G they also announced the E 10-20mm F/4 PZ G lens. Unlike the 10 year old 10-18mm the 10-20 has internal focus, advanced AF motors, much better optics, close focus and much more. Because it is a power zoom lens it can be controlled from several of the APS-C camera bodies by assigning the zoom to a control button. On full frame I have the FE 16-35mm F/4 PZ set to zoom wide using the OK button and to zoom tele using the down arrow on the key pad. This eliminates the need for an expensive zoom gear with adaptable cameras. Unless you have an above water need for the fast F/1.8 of the 11mm, I think the additional $200.00 for the 10-20 would be a much more versatile choice. Both lenses will likely require a 180mm dome port and likely very similar port extensions. Another excellent choice which can be found in the used market is the Zeiss Touit 12mm F/2.8 with the 180mm dome port.
  19. I have used the Canon 8-15mm for over six years now with Sony cameras and the Nikon 8-15mm with Nikon cameras. Both are excellent choices and both convert well to mirrorless cameras with a verity of adapters. I have also used 100mm, 140mm, 200mm and 230mm domes with the Canon lens. For me the best choice is the 140mm dome port. I zoom the lens all the time during dives and have never used the lens without a zoom gear. With the Marelux housing the recommended port extension for both the 140mm and 230mm ports is the extension ring 30. With the Kenko 1.4X teleplus pro 300 you would need to add extension ring 20 to the Marelux system. As you have listed above to use the 8mm end of the lens you must remove the dome shade to prevent the vignetting. Marelux has the best solution I have used for this problem with the bayoneting dome shade. This shade can be easily removed and reinstalled underwater. I reviewed this port in uwpmag.com issue #128 which you can find in the back issues if you are interested.
  20. I have both but my top choice is the 90mm including for blackwater.
  21. The newer Sony FE 28-60mm is a much better lens than the old 28-70mm. It is very fast to focus and requires a shorter extension ring. You now have the choice of using the smaller, lighter and less expensive WACP-C which is an excellent optic.
  22. The WACP-C is much more like the WACP-1 than WWL-1 because it is a direct mount to the housing rather than mounting to a port Like WWL-1 which is designed to have water on both sides of the lens. I have experience with all four WWWL-1 WACP-1, WACP-2 and WACP-C. As advertised the WACP-1 gains a stop over WACP-C but in every other way they are much alike. This is most noticeable the higher the number of MP's for each camera. It will shine with the A-1 and A7R-4/5 cameras.
  23. I have not used this lens and camera combo but it has the same problem as the Tamron 28-75 F/2.8 with Sony systems. As the lens is extended it hits the rear of the WACP-1 and you don't get the full zoom through only 130-83 degrees. The Sony 28-70mm with the Techart adapter is still the only lens that gives the full 130-59 degrees zoom through on Nikon-Z.
  24. This is how the Sea & Sea converter looks on the 16-35mm F/4 PZ lens.
  25. The 12-24 F/2.8 is a fantastic lens if you are doing a lot of top side work as well as underwater work. It is much better than the old F/4 version but I will be recommending a 12-24mm F/4 II version when it arrives. I have been using the new 16-35mm F/4 PZ with the PZ function assigned to the OK and down arrow buttons rather than using a zoom gear. It has 8 zoom speeds and I think video users will find it user friendly. I have been using it with the S&S correction lens which helps the corners when using a 230mm dome port. I would now recommend the 16-35 PZ over the Tampon 17-28 F/2.8 used for some of the above photos.
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