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Everything posted by adamhanlon

  1. @Alex_Mustard and @adamhanlon chat about some of the creative options that using vintage lenses can provide for underwater photographers in this episode of Wetpixel Live. Alex kindly shares some of his imagery that illustrate some ideas about how you can use them to create different, noticeable pictures.
  2. Once you used a pixel editing program (like Photoshop) you cannot save any edits made within it to a RAW file. It will have to saved as a TIFF, PSD, jpg or similar. If it is likely that you will be returning and editing the image again, saving as a TIFF file makes sense, as this allows you to do so without quality loss. If you don't think that you will ever edit the image again, high res jpg is probably sufficient. A few print publications still want images supplied as TIFFs, so again, if the images are likely to be used for print, it makes sense to save them as TIFFs. Storage is cheap...time is less so!
  3. Lightroom has an "Embedded + Sidecar" option on import. This uses whatever sized jpeg is embedded within the RAW file...
  4. You can browse and select images on a card (pre-import) in PM. So you could select your images via PM or import without offloading the whole card. The App actually only uses the embedded preview jpg files within the raw files, so is super fast. You can also set Lightroom to do the same. The setting is within the Lightroom import screen and if selected, Lightroom does not build preview files and you just view the embedded jpgs. Similarly, you can also view and select the files on the card (pre import) and it is faster than Bridge... If required, Lightroom builds preview files so that you can view and edit files at full resolution. Lightroom is a parametric editor. It doesn’t change the original photo file in any way. Instead, it keeps a record of any changes made to the photo in the Catalog. As the original photo is unchanged, Lightroom needs to generate previews to show you how your photos look after you have edited them. Like you, I sometimes shoot many thousands of files in one shoot. Lightroom can cope with this fine! If I am up against a hard deadline, I do import via PM, but this is a topic for another video...
  5. Alex, do you not do global color and exposure corrections (as required) in LR? PS definitely has better selection tools and arguably the implementation of anything Content Aware is more accurate, but to do global corrections non destructively, you need to either do it in layers, or ACR? Either way is more complicated/time consuming than using LR? Years ago, I used to convert to DNG, but found that the conversion process produced some really nasty artifacts. Lightroom and Bridge are different tools for different things, so comparing their speed doesn't really make sense. Bridge is an image browser that allows for metadata editing. LR is a DAM that stores not only the location of an image within a computer's file hierarchy, but also the RAW file, metadata, EXIF data and any edits carried out within Lightroom. To do this, it needs to generate preview files, which does take some time. Bridge (in Alex's and your use case) only deals with processed images, so does not need to do any processing in order to display an image. If speed is your goal for browsing, Photo Mechanic is way faster than Bridge and allows for very sophisticated and automated metadata management.
  6. Well...at the risk of being argumentative... DxO PhotoLab performs better than Adobe? Which Adobe app and at what?
  7. Bridge is an image browser with some metadata editing abilities. It is not an editing tool. I uses ACR as a RAW rendering tool, which is ultimately very similar in terms of speed and accuracy as Lightroom's Adobe's workflow would be to use Lightroom as a tool to import/sort/rate and do initial edits. Any additional edits would then be done in Photoshop (selective edits primarily, with perhaps some sharpening) At this pint, Alex exports images to a folder of "finished" photos that he browses using Bridge. I don't do the same...but that will be for a future episode... Lightroom's color management is ProPhoto RGB, and renders colors perfectly, but you should avoid doing color critical work on a laptop. I'm not sure what you mean by an additional catalog you just import the "trip" catalog to your "main" one...here is my workflow for trips...https://wetpixel.com/articles/tutorial-lightroom-field-workflow
  8. In this episode of Wetpixel Live, @Alex_Mustard explains the steps of his imaging workflow, from offloading camera cards through to providing images to magazine editors. It is important to stress that he does not chat about editing specifically and we stress that the best place to get detailed tutorials about editing is Erin Quigley's site: (https://www.goaskerin.com
  9. In this episode of Wetpixel Live, @adamhanlon and @Alex_Mustard chat about the tools that are needed to capture beautiful portraits of reef fish. Among other things, they cover lens selections, lighting and autofocus options.
  10. As other have said, I think that the trick with dodgy water conditions is to get closer rather then further away! The 60mm is great lens on cropped sensor cameras - it focuses fast and accurate, and has a super close working distance. I don't think the solution would be the 105mm!
  11. I have done quite a bit of testing by introducing deliberate leak; cat hairs, sand grains, lint, misplaced O rings etc. They all trigger alarms within 3-4 minutes, with most being much quicker.
  12. @adamhanlon and @Alex_Mustard provide some advice about one of the unsung but critically important components of any imaging system: Memory cards. They discuss the types of cards available, how to select a card, and what you can do when they go wrong.
  13. @Alex_Mustard shares some of his beautiful images of oceanic whitetip sharks (Carcharhinus longimanus) from Egypt's Red Sea and provides essential advice for those wishing to capture images of this iconic species.
  14. With many of us not being able to travel, we are turning to creating underwater imagery in our home locations. For those of us that live in temperate climes, this often involves shooting in somewhat limited visibility. @adamhanlon and @Alex_Mustard chat through some thoughts and ideas about creating memorable images in less than ideal visibility.
  15. This housing is now sold. Thank you for your interest Adam
  16. On-chip phase detect is NOT the same as phase detect using a separate AF sensor. The former compares the image on the sides of the sensor and is (currently) less accurate and slower than the former. The D780 looks like a great camera, but I would argue that the D500 is a better choice for underwater use... Nikon told me that the SLR was dead and there was to be no more development after the D5 series. Well, since them telling me that they have released the D6 and D780... The only people that know Nikon's actual plans are not telling. My guess (and the current rumor in the industry) is that we will see a series of hybrid cameras, using similar sensors, but with SLR AF and improved Live View performance from the Z series. These have the potential to be very exciting for underwater use.
  17. With the correct flash and housing hardware, you could use HSS, which would avoid the problem slow flash sync speed issue. I guess the disadvantage is that the Live View focusing is still not as good as the phase detect AF in existing SLRs... I'm not sure it will make a huge difference for video. I have heard a (very) unconfirmed rumour of a new high resolution SLR with D6 phase AF and the contrast detect/on chip phase detect from the Z series. That sounds very interesting! I should stress it is a rumour! Adam
  18. @Quinn More typos....I think you mean "Hulkster", not "Huckster"? Adam
  19. Thank you for all the ideas. I have some excellent rubber ducks that know how to pose perfectly, but wanted something that actually was a similar size to the types of subject that we actually shoot. This is specifically for the EMWL/Laowa 14mm f/11, although we plan to test WACP 1 and 2, as well as comparing this to 230mm and 16-35mm. Obviously, the nudis will not feature much in the WA tests!
  20. I should state that I am not against having a vacuum in the housing...as others have said, it keeps ports and housings closed. What I am (somewhat) against is continuous monitoring of that vacuum. False positives are a thing! I have had it with several systems, and they are a significant problem when on assignment. I should point out that my experiences were some time ago, however. Some vacuum systems state that they are temperature compensated, but my experience is that this tends to work better going from warm to cold, rather than the reverse. Once the vacuum has held for a period and hence confirmed that you have correctly assembled your housing, there is no real advantage in having continuous monitoring. The reassurance of having a colored light continuously telling that the vacuum is constant is purely psychological! If the vacuum has held for a period, the only way the housing can flood is some kind of catastrophic failure (port implosion or similar), which a vacuum will not prevent. I think @TimG and @ChrisRoss's posts both sort of demonstrate this. If the vacuum has held for 5-10 minutes and then starts to flash, and you do not have your pump...do you (a) not dive or (b) assume that this is an issue with the vacuum system and that you have correctly assembled your housing and dive? If the answer is (a), the addiction is too strong! As (a possibly irrelevant) aside, in the ROV and offshore engineering industry, vacuums have been used since (at least) the '50s to ensure that instrument pods are sealed, and once this is proven the pods are (often) then pressurized with an inert gas to reduce fire risks and to maximize crush resistance. Obviously, they are working at much greater depths than we normally do and the pods are bolted together, so the chance of them coming apart underwater are slim... Historically, as Alex points out in the video, Peter Scoones was definitely adding vacuum systems to his housings long before any of the commercial manufacturers were (or possible even existed!) John Ellerbrock traces their use to the '60s at least: https://wetpixel.com/articles/john-ellerbrock-the-origins-of-seal-check So they are not a new idea
  21. Wetpixel Editor @adamhanlon and regular contributor @Alex_Mustard discuss the pros and cons of vacuum housing leak detection systems, along with some ideas about how to use and maintain them in the field.
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