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Huw Jenkins

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Everything posted by Huw Jenkins

  1. Would anyone like to upload a couple of canon EOS raw files shot underwater for me look at? I am currently making a Picture Style for videographers to use underwater. When shooting video, the white balance, contrast, saturation etc, is burnt into the video as it is recorded, rather like when shooting in JPEG. This means that the Picture Style used could be important, often an overlooked detail. With a variety of raws, I can get a better understanding of how the Picture Styles I create will be effected by different underwater conditions. Natural light shots would be great, strobe lit shots could certainly be interesting too.
  2. dubstar, because i shot everything in raw, i didn't need to use a red filter. if i needed to tweek the white balance afterwards, i could do this in lightroom with the raw file. i was actually mainly shooting video, so i would set the white balance for each shot with a white slate. huw
  3. researching this on the web for the GF1 it's 0.072sec, so comparable with reflexes, faster than the 5d(0.075sec) but slower than the 1d (0.051sec). again this could to be verified if someone also knows a reliable resource, this is according to www.impulseadventure.com/photo/shutter-lag.html auto focus can be slower on the older models, on the tested lens on the GH1 0.2 secs, but i understand that the GH2, the newest panny model has got that down to 0.1 secs, so faster than a lot of dslrs, depending on the lenses used.
  4. looks great, but what's with the wallpaper lol
  5. this one is fixed, which is a shame as attachments will never be as good as dedicated lenses. But what might be interesting is that it could be contained in a really small housing, the controls separated into the handles and the lcd screen as a separate entity on a moveable rod. but the touch screen is worrying a little, are all the basic controls available through a lanc or equivalent?
  6. yes, i should clarify, that i do not think for a moment other shooters would not be able to get the shots with a much larger setup, but the smaller setup just helped me. in the egg cowries for example, i felt i could actually place the camera in between the coral fronds without any fear of touching and damaging them. it did seem that i could also stick the camera right into any creature's face without it being intimidated so much, but maybe thats just my imagination Mike, someone can correct this, but i think they lag just as much as reflex cameras. autofocus can be slower, but on WA fast action shots, i assume the focus is set before hand and locked? thats how us movie people would have to do it lol
  7. thanks I'm using the Leica 45mm f2.8 lens m43s. It's a great lens, the sharpness is almost the same at the edges as in the center but the macro can be a tad slow to focus. it should work well on the oly too. My housing is 10bar, it too has it's problems which i've discussed in other threads here, but it's advantages over the other available housings is it's very small, is aluminium and has a clear back so you can see instantly if one of the 2 o rings is flooding.
  8. here's a small collection of photos taken with one of the new style of mirrorless cameras, more can be seen on my flickr page here: http://www.flickr.com/photos/47889331@N05/...57625980295388/ The camera's small sized proved useful for getting shots that i would not have been able to get with the larger form dlsrs. All of these were shot with natural light, so the whole setup added very little in terms of size and weight to my luggage. C&C welcome!
  9. i concur with hdvdiver, 4/3s is the best sensor size for me too. it has a more manageable dof than aps-c or the 5d etc. i think that the af100 with an external recorder like the nano flash will be awesome, but bear in mind that it will be so much larger in the housing than the present hacked cameras, so this could out way the benefits of allowing cranking at 1080p if travel is one of your priorities. plus with the hacked cameras being so cheap now, if you flood one it's not gonna break the bank.
  10. the days are counting down till the 1st, are you gonna have this underwater or just for topside testing? go on... stick it underwater, and share the results
  11. unfortunately, when it comes to rotoscoping/keying unless the new background's lighting and angle match perfectly, it'll never look real, let alone the light dappling effect created by shooting underwter. i think even if you use the same background, but change the color of foreground, unless you lightwrap it really well, it's gonna stand out like one of those pictures you get from a photo booth with you and tom cruise / kylie minogue. lol however if you want to go the leandro blanco route, then this is probably your best bet for easy keying.
  12. have a go with the 'channel mixer' effect in the channel effects. what it does is to allow you to remap channels... in your case remap the green or blue channel to the red channel. the green channel will always have less noise/artifacts, so it good to start with that, and only add the blue channel if you need too. it's a very powerful tool, and can be used to put a lot of color 'back' into the image. there probably wont even be a need to do the chromakey/rotoscoping that you mentioned. however if you think, cool i can remap the green channel to the red channel and the blue channel to get a much better quality image, you'll end up with a black and white image lol
  13. try disk utility a couple of times, sometimes it catches and works, even after a few goes or if that fails, rebuild your catalog b-tree (say that when your drunk lol)
  14. i know different people have different views on cleaning o rings, so just a different view here, nothing more. i haven't had any reason to remove any of the port orings after about 60 dives and 30 snorkles. i probably swap the ports every 3-5 dives. i just check if the oring looks clean, wipe it with a dedicated cleaning cloth, and sometimes add it tiny bit of grease. i keep everything in separate ziplock bags, so no dust / dirt can get on anything while it is being stored / not in use that day. the back plate oring i remove and clean at the beginning and end of each day, so after 3 camera changes during the day. if one 'pops out' during a battery / card change, i clean it then. this is my practice, i know people differ on this hugely. was there a reason to clean everything before you took it into the water the first time? if it is straight from purchase, wasn't it pretty clean when you got it?
  15. are these scenes not in the disney version? wow that would be very lame, as these scene are really powerful, and send a better message than any words to people that some sort of action needs to be taken. (i guess when i was writing the word disney, i should have just remembered who disney's target audience is) do you happen to know what stock/film speed they used? it was graded to look early morning, but the shutter speed would have to be 1/300, so did they have a little more light (ie around midday) or use a high iso?
  16. thanks jack one thing to note for anyone purchasing the 10bar housing for the gf1 is the backplate. i have the first release. although i like the housing, i actually hate the back plate! and i am annoyed that the updated backplate cost so much as a replacement. i bought the housing recently, i think i shouldn't have to pay £250 or $250 in hong kong to have it "updated". it was updated for a reason, because it's terrible for non point and shooters, so give it to us at manufacturing and shipping price! ok rant over
  17. this one is interesting, french version, so google translate http://www.sbcine.be/index.php/archives/3492
  18. hey long john, i have the first release. although i like the housing, i actually hate the back plate! and i am annoyed that the updated backplate cost so much as a replacement. i bought the housing recently, i think i shouldn't have to pay £250 or $250 in hong kong to have it "upgraded". it was updated for a reason, because it's terrible for non point and shooters, so give it to us at manufacturing and shipping price! ok rant over so yes, only buy the new version. i do. i've already scratched mine, (60 dives with it) but it's acrylic so i'm gonna micro mesh it to new yes. it's absolutely necessary. for mjpeg you want to set it at 60fps, and then i lock the auto exposure before starting every shot. so add that to white balancing every shot and moving the point of focus, you've got a lot on your hands. but play it back on an hd tv, and the 100mbit is glorious.
  19. i agree, and i thought the grading was stunning. quite stylized but so beautiful. the palette appeared to have been restricted hugely, the sky color always seemed to be very early morning, but very elegant. another massive chunk of the budget that no-one really thinks about is insurance. yup, it's boring as hell, but unfortunately it's needed and ridiculously expensive! would love to get a final figure for that one. man, that must have been cool!
  20. the film has quite a few fictional parts to it. for example the whales, dolphins, sharks caught in the nets, being finned are animatronics. there's cg in quite a few scenes, the cherbourg museum was extended by cg etc. new stabilization technology was developed to be able to shoot steadier on zodiacs, mini copters etc. the storm scene with the huge ship powering through the waves at the end couldn't have been cheap. the top shots were shot on 35mm. it's gonna rack up the dollars shooting a high shooting ratio on 35mm. i think it took 6 years to make. so divide that by the number of crew and knock off the equipment, and it probably works out to about 80 grand per person per year. (nope, i'm not good at maths, but you know what i'm getting at)
  21. yes. i've just discovered that the spanish version too is completely different to the american bond version, there is very little commentary, just a sentence here and there to introduce ideas so the scenes feel much longer. this is probably why some people like it much more than the people watching the american version. try getting a french / spanish version cheap on ebay, you'll see love it. (it doesnt matter if you cant understand it, there's literally one sentence per 5-10 minutes - for example there is no commentary what so ever from the introduction of the seals/comorants hunting, during the great white attack / orca attack, right up till after the blue whale, a little during the night topside shots, and then no commentary during the whole of the night time scene where the mantis attacks the crab etc)
  22. i thought the editing within the scenes was superb. yes the transitions between scenes was hurried, but thats splitting hairs a little. It's a different experience in the cinema, you have people eating popcorn and talking on mobile phones, the pacing should be different to a television documentary. It's a group experience, so cant be so information intensive and often needs to be more fast pace. The sound design was fantastic! you cant really blame bond, he's just the voice artist and would have read a script. no matter who read it, it would still be the same words read in the same way. (i watched it in spanish and it's the same)
  23. dxo makes it seem like there isn't much difference at low iso's between the gh2 and the sony nex5, with difference growing in favor of the nex at higher isos. http://www.diwa-awards.net/wip4/lab-results/l.epl?cid=12157 something i've found with larger sensors is that narrow dof is a tough beast to tame when shooting underwater video marco. you need a lot of light! however, for wide angle and non macro, as we've seen with 5d footage, larger sensors do make great use of what light is available.
  24. the 10bar. it's built like a tank (literally, it looks kinda world war 2) and has a clear backplate to check the 2 orings when you pressure test it. i recommend it, there's more info on it and pics here http://wetpixel.com/forums/index.php?showt...32112&st=20
  25. sadly the af100 is recording PH at i believe 24mbits (please correct me if this is wrong). this just cant compete with 100mbits at 4:2:2. yes the af100 is 1080, but thats even more pixels compressed into the PH. however, hooked up to an external recorder, i think the af100 will be awesome! but for the size, this is tiny, you cant beat this. in it's housing it's smaller than a z1 or hc9. it's cheap so you can use it as a second cam, or in situations where you primary cam is too valuable. and you can stick an insanely expensive piece of glass on the front and get some spectacular quality.
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