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CheungyDiver last won the day on April 10 2015

CheungyDiver had the most liked content!

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53 Excellent

About CheungyDiver

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    Tiger Shark

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  • Interests
    Lots. I take things apart, modify things and make things.

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  • Camera Model & Brand
    Red Epic/Scarlet and soon Dragon. Current DSLRs
  • Camera Housing
    I sell all the best brands
  • Strobe/Lighting Model & Brand
    Only the best brands
  • Accessories
    Almost everything

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  1. I have one I used recently in Palau. Used twice. Also have a custom Polecam configuration. If you know people in SE Asia. Pick up in Singapore. Saves you shipping. Plus they can check it out for you. Which camera you are using? GH4 or Sony A series (A7s). Interested PM me on: info@scubacam.com.sg Cheers David
  2. Peter's methodical approach is probably the way to go. I had about a year with the A7s and I am convinced the camera could not MWB consistently. I get inconsistent ambient back ground colour. I would suggest stay away from PP7 and S-log for UW. Even with a Shogun recorder. However this combo works best topside. I almost ruin a day's shoot at Northern part of Palau with this setting. Very washed out but where as on land this would be okay in post but there is something UW I did not anticipated. You need ND to stop-down as the camera ISO is fixed lowest at 3200. Not good on a bright morning and water full of mantas near the surface. I find the A7s works best close up and with dive lights. Superb results with macro. Set it custom profile that you like and expose properly. Never forget those ND filters. My two cents. cheers David
  3. Hi Drew Yes correction needed. Epic Dragon is 1.17x relative to full frame 35mm sensor. So for 15mm Zeiss it is almost 18mm (17.55mm) And the RS 13mm will be @ 15.21mm sorry gone off topic again. cheers
  4. If it creaks try some lube :) I am looking at some old world goose neck lamps. Not the lamp but the bendy metal part. I have not found one that could resist sea water. I think the new "metal" Gorilla-pod could be hacked and butchered into video light arms. If I found one that works as well then I will let you know. cheers
  5. Hi Jon I would agree the 15mm Zeiss is a fantastic wide angle lens. I recently just came back from a dive trip using the RS 13mm with an adapter for the Dragon housing. Full mechanical control for focus and aperture. The 13 mm RS is now my new favorite lens. Surprisingly it is not as "fisheye" as one would expect. I think on the S35 sensor (approx. 1.6 crop) its like a 20mm. Some pictures soon when I could grab a hour or two.... cheers David
  6. Thats a big O'puss Eunjae! They grow them big in the Korean sea.....One has a white patch on its "head". Why is that? Warning sign or something?
  7. Yes. You will need less angle of beam in certain situations. Beam should be even in either spot, medium beam or wide beam. To do so correctly in a powerful light would need some sort of lens/ diffuser. One thing to note is that better powerful light heads do not use array of power LEDs that is spread out in the light because that would produce multiple shadows. Two cents worth...
  8. CRI (colour rendering Index), lots of power yes but must be dimmable and non- flickering or colour shifting. Sensible battery system for travel and weight. Variable beam adjustment. Just my two cents
  9. hi Moses It depends on the situation. more powerful light gives you more options of what video you want to shoot. These lights still need variable output though. Now thats difficult to make consistent. Say in still water and it is gin clear I would use as much lumen as possible with wider beam. Some UW wrecks are difficult to lit properly for a wide scene. In some waters I would use a narrow beam. With flood lights a condenser lens will work and produces a nice long throw beam. Even with these less powerful light you could do a lot with cameras with high ISO and DR. Well a year ago lights with 2000 lumen is nothing to sneeze at. I say that because now there are portable LED lights that could pump out more than 22000 lumen. But cost over 2K. It is only a matter of time when 4000 to 6000 lumen become the norm and price will drop. It all boils down to demand. Not many would spend a princely sum on a light. More power means more heat generated, bigger power demand, heftier electronic ballast especially for dimming. Color too. High CRI (color Rendering Index) and high power is quite complicated to do. Again difficult for dimming and maintain same quality of light without any flicker. I have seen some high power ones but these are not yet up to par with Keldan or the like. I am sure the Chinese companies is more than capable. R&D and prototyping is costly. Powerful battery is also the limiting factor. Battery tech. with enough juice and light weight for powerful lights is really limited to Li-ion and Li-po. Li-Ion I see at present is the only option as it is in pressurized containers. Li-Po is out of the question for powerful UW lights. Too dangerous. One way to get more light is to get a few of these and bundle them together. I tried four lights in two, two configuration. Output per light is 2500 lumen. Total 10000. Total cost is still less than the cost of a single 6K or 8K light made by premium brands. Not as convenient but does the job like you say Cheers David
  10. I think Canon is in a dillema. They also launched a C300 MII which is only just heads above water in terms of up to date 4K specs. not when Sony has a Fs7 costing half the price of the Canon. The C300 is still the best selling broadcast & news camcorder Canon produced. They have yet to annouce the 5DMIII replacement. Rumor has it that is 4K enabled. I will not be surprised if the wizards at Magic Lantern get there with the Linux hack before Canon's announcement. This neither small or large camera seems to come from some 90s throwback bridge camera design. Had they just allow interchangeable lens mount say the EOS M this would make it more attractive..ie. allowing Meta bone speed booster adapter like the one for the Black Magic Pocket rocket wotsit camera. One saving grace is that it could allow recording to external 4 recorder like the shogun at 10 bit 422. As for if this thing could be used in drones. Too big for stablising gimbal and no remote zoom control. A zoom like that with no wide angle...seriously not even close to competing with Go Pro H4 or the higher end GH4 and gimbal. I think this latest release just show how unimaginative canon has become. Panasonic, Sony and even Samsung have cameras that could run rings around this camera. These are just my opinion of course and if there is redeeming features I have missed then let me know. I hope the image from the tiny one inch sensor is halfway decent when they actually available. The demo reel is bad. Cliiped footage in the yellow colour highlights, cheers David
  11. Looks like the page is screwing up the photos and rejecting them. Apologies for the messy post. Here is more. and more pictures:
  12. Hi Folks I have been testing a ton of lights recently and used them in real dive situations with various cameras. I have selected the ones I think worthy of a second look. I am more bias towards video so most here are for video cameras although some are so handy and small it could be used for digital still at least as a focus light if not close up photos under the right conditions. Since well known brands that have been reviewed in so many places I keep this finding to lights made in China. Three lights tested really hit the spot for me. They are of course LEDs. All aluminium body with depth rating of 100m. All three has this nifty lit button switch with status indicator. Blue for full, green half charge and Red for low battery. There is also a safety off circuit to prevent completely draining the battery. They are all similar in size in that they fit nicely as a hand light or mounted onto a UW housing. Small and light. Powerful adjustable. Beam width and spot beam. Small common batteries or small long life rechargeable batteries. White and Red LED options. Accessories and package case. Lastly price. Coincidentally all three are from the same manufacturer. First of is the Hi-Max V14 A true Swiss Army of LED lights. This has over 2400 Lumen. Wide (flood) and Spot, Red LED, and all dimmable with levels. Even has two UV LEDs. I had so much fun switching this light to various features during my night dive. Seeing the coral glow in the dark under the UV is fun. Second is the V11 ( or the company updated the older version which has a magnetic switch) Like the V14 this handy light uses a Li-Ion rechargeable battery. Like an oversize D Cell but packs in 5800 mah. Weights only 400g - light a couple of oranges yet gives out 2300 lumens. It has Food, Spot and Red LED and dimmable. The front bazel with this design is thicker so more aluminium for heat dissipation. The top features a glow in the dark rings so if you drop your light in the dark you have a better chance of finding it. Lastly the V12 is a real surprise. This is the smallest of the three. First surprise is when I open it and it takes four double A batteries. I have been waiting for such a light for a long time. Four AA not three not two. So this is much more convenient for charging four and keeping track of sets of spare batteries without mixing charged from depleted ones. Second surprise is that the light is bright. The light is 2200 lumens. It looks more than that as the beam is very bright. It is a simple light with just two power level and 110 deg. beam. Like the other two it have two o-rings and all aluminium body for good heat dissipation. The small is also good for handheld and also as a back up light. Now just when I had tested all Hi-Max send me another one to look at. The X6. This is a dive light and is slim and light to be a carry everywhere light. It pack 1000 lumen and like all the LED used is CrEE with very pleasing colour and temperature. This is certainly a good candid as a Go-Pro companion light. Well I have more to say and if you are interested in more just click on this: I will post some video samples next using these light on some dive shoots. If interested in more click on this BLOG If you are attending ADEX this weekend drop by Scubacam Booth C19. We have all these lights to try out. Cheers David
  13. http://www.magiclantern.fm/forum/index.php?topic=14847.0 The ML people are doing it here trying out half a dozen cameras without really frying the cameras...well some got stuck but recovery is just pulling the battery out. The program resides in the card. I am no expert in Linux but that system is used in many devices. I will wait and see how the community developes this new found spring of possiblities....watch this space. Cheers David
  14. It is real No April Fool's joke. It is early days but same goes for when ML first hacked the 5D MII and MIII. Now you potentially can upload Fruit Ninja into your DSLR and play computer game waiting for safety stop LOL cheers
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