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Interceptor121 last won the day on November 10

Interceptor121 had the most liked content!

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330 Excellent

About Interceptor121

  • Rank
    Humpback Whale

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  • Location
    Woburn Sands, UK

Additional Info

  • Show Country Flag:
    United Kingdom
  • Camera Model & Brand
    Panasonic GH5
  • Camera Housing
    Nauticam NA-GH5
  • Strobe/Lighting Model & Brand
    2x Sea and Sea YS-D2, 2x Inon Z240
  • Accessories
    Too many

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  1. I use the canon on my micro four thirds A guy I met on a boat had a Nauticam set up you need an N100 to N120 adapters then you get a 30 mm extension ring and a fisheye dome His images were great and he did not have focus issues Sent from my iPhone using Tapatalk
  2. Ah. The 10-18 mm is constant aperture? How big is your dome? Sent from my iPhone using Tapatalk
  3. I would keep the 16-50 if you have a dome well designed and placed you can shoot even wider Obviously that may not be the case but I can go all the way down to f/2.8 in a 180mm dome with a MFT so f/4 would be a possibility for sure I have been looking at malapascua for the last 10 years and so far i have not taken the plunge It is fairly blue so maybe a good one for black and white Sent from my iPhone using Tapatalk
  4. If you have a wet wide angle lens set the focus at beginning with your on something at 1 meter and then switch to manual Also at f/5.6 the scene will be fairly dark this is only a 1” sensor you can let the camera go wider Sent from my iPhone using Tapatalk
  5. Hey trimix Your pictures are pretty good I fully agree that the 16 mpix older sensor is not on par but the EM1 GH5 and EM5 III have a 20 mpix sensor And no am not saying that at the same ISO the EM1 performs like a DX What am saying is that when the Nikon says it is at ISO 1600 it really is 1250 when the Olympus says 3200 it really is 1250 too. DX and the MFT sensor differ more on dynamic range and to some extent colors You then have to consider that you need to close the aperture one stop between DX and MFT so at the end is similar With FX equally there are two stops but you loose them with dome sizes What is true is that a raw file from a sony a7 3 or a nikon d850 will recover much more shadows highlights etc as it is more iso invariant Anyway this is way to technical! Sent from my iPhone using Tapatalk
  6. The low light performance of the OMD EM1 MKII is pretty much identical to a DX camera. However the Olympus ISO is well known to be inaccurate when it says 3200 is around 1300 800 is less than 400 It is a marketing trick that creates issus to many. If you shoot at nominal ISO 3200 is like a nikon at 1600 which is also inflated but only a few hundreds Sent from my iPhone using Tapatalk
  7. I use a clip with a soft edge as otherwise it cuts the card but you are making a good point I will add a picture I just heard Keldan is coming up with a checker card and I will receive it for prototype testing
  8. The way I work is to use filter in the first 12 meters where the color rendering is good. Actually the URPRO can go deeper however you have a great housing with a flip which means you can get rid of the filter and use the lights The ambient filter becomes useful in situations where you are at shallow depth and are in the shadow or you want to have colors in the foreground and background that are homegenous For a close up you are going to use the lights as primary source so take filters off because you can If you keep the filter on at close range on both you need to make sure you white balance for the dominant light not on ambient because the light with the filter will be predominant. For example you are at 10 meters and your ambient filter is 12 if you balance for environment you set for 10 but at close range it will be like 12 meters because of the lights and you end up with cool colors or cast which is what happened to you With a housing like the gates you have the flexibility required use the ambient filter only in mixed light situation and skip otherwise
  9. I have been testing DxO Photolab primarily to deal with rectilinear lenses. At first sight the functionality is similar to lightroom then there are some really technical tools but what makes it interesting is the lens profiles by DxOMark The shots that I am enclosing here are 3 versions of the same RAW files, the first is the file as I processed it in lightroom, the second is the same file where I processed it exporting a DNG and then applying settings in lightroom to my surprise it turned out different, the third is a file where the lens distortion correction has been turned off What I can observe is that lightroom is using the lens parameters embedded in the raw file and there is no way to remove the correction the outcome is the lowest quality output in terms of sharpness with some limited pull in the corners but the image is still ok The second file has been processed by DxOLab using an optimised profile for the Panasonic 8-18mm lens as you can see there is less crop and the image is sharper with less pull in the corners Finally there is the same file where distortion correction has been turned off this results in no pull in corners however in my opinion the quality is less than the Dxo Profile. This image has residual barrel distortion in it which has not been corrected The images are at full resolution it will take time to load Images taken with Panasonic GH5 in Nauticam housing with 7 Acrylic port that is the best performing option on the port chart School vs School by Interceptor121, on Flickr DXO_Corrected by Interceptor121, on Flickr DXO_Uncorrected by Interceptor121, on Flickr which one do you like the most?
  10. What happens if you travel to Baja using an internal and not international flight?
  11. I was referring to the close up shots being cold and actually have a blue cast from the keldan filters Your system with a flip diopter is great you should limit the use of ambient filters only to shallower water to eliminate shadows or when you swim through a cave I would recommend the 6 meters blue green filter that matches better with the urpro filter and definitely remove everything in close up shots to take advantage of the high cri of the lights Sent from my iPhone using Tapatalk
  12. Excellent and a great improvement over the A7. The URPRO filter works well with Sony cameras for some reason The camera is also held very steady don't know if you have stabilised in post the port with the diopters together with the camera 12x zoom work a treat In some cases the colours look a bit cold maybe you wanted to keep the natural look or the keldan filters were in action and they result cold If you only shoot video there is no need in my opinion to go for a camera the ergonomics are just too hard compared to a nice camcorder Also the iPhone seems to be a winner!
  13. I have seen the Sony A7RIII with the metabones smart adapter and the canon 8-15mm and the results are great It focus fast and it also holds phase detection it is absolutely not the same of panasonic and nikon mirrorless full frame For what concerns rectilinear and macro options sony does have some of the sharpest lenses on the market Obviously there are other ergonomic issues and Sony does not appeal to former canon or nikon so there are not as many ambassadors out there But the results are stunning and at least on par with Nikon D850 Sent from my iPhone using Tapatalk
  14. Avoid the blue filters if you really have to buy divepro get the blue/green I tried to explain them blue water does not exist with no success
  15. I would recommend one of Panasonic 12-35 f/2.8 or Pana Leica 12-60 f/2.8 with acrylic port 7” The field of view is 84 degree which for the size of the dome means you can shoot wide and zoom if you need Sent from my iPhone using Tapatalk
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