Interceptor121 708 Posted June 2, 2014 Thanks Bob. Having watched those, I think it's probably OK for wide static shots but a bit strange for moving shots because of the inherent distortion of wide angle behind a flat port. You can put the same lens behind a 4" wide angle port, this will give the opposite issue at long focal length but nauticam also produces a flip diopter for the wide angle port I have never seen any footage of the latter but this was my choice of port on paper when I was still considering a 4:3 camera Share this post Link to post Share on other sites
ScubaBob 37 Posted June 2, 2014 Thanks Bob. Having watched those, I think it's probably OK for wide static shots but a bit strange for moving shots because of the inherent distortion of wide angle behind a flat port. Interesting - I hadn't noticed this - I will have to revisit my footage and plan better. I shot with my 7-14mm again last weekend, after having gone nearly a year without using it and I must say, I do prefer that lens for WA!! The versatility of the 12-50mm, along with my preference for shooting close and macro makes me pretty happy shooting with the longer zoom on most dives. Share this post Link to post Share on other sites
Nick Hope 151 Posted June 3, 2014 You can put the same lens behind a 4" wide angle port, this will give the opposite issue at long focal length but nauticam also produces a flip diopter for the wide angle port I have never seen any footage of the latter but this was my choice of port on paper when I was still considering a 4:3 camera Thanks for that. You mean this I guess. Were you thinking of using that with the Olympus 12-50 in macro mode? Seems a bit of a hotchpotch for macro, but you never know... I would be interested to see footage or stills. Non-macro footage should theoretically be better than with the flat port, but if the macro quality is badly compromised then the flat port seems a better bet, and use a 7-14 with dome for dedicated wide-angle dives. Share this post Link to post Share on other sites
Interceptor121 708 Posted June 3, 2014 I thought you could use the port as is for wide angle and instead of using the macro mode as you do with the flat use a diopter and zoom in. Anyway the tests on this lens in terms of sharpness when combined with the panasonic give mediocre results even on land and the lens is not stabilised so I dropped the whole idea of 4:3 Share this post Link to post Share on other sites
Pete L 48 Posted June 3, 2014 Nick, with the couple of dives that I have used the 12-50mm lens on the GH4, I have not seen the same amount of softness in the corners at full wide. Whilst I can't remember the numbers off hand, the GH4 in UHD mode has a different crop factor compared to 1080, something like 2x for 1080 & 2.3x for UHD plus it reads the sensor differently in the two modes so I do think the 12-50mm is better on the GH4 but sydneys conditions this last week have been not very good for wide angle shooting so it may be a little while before I can do some decent tests with this lens in the 12mm region. Cheers Pete. 2 Share this post Link to post Share on other sites
peterbkk 110 Posted June 18, 2014 Cheungy Diver and I visited the Broadcast Asia Conference in Singapore yesterday. Big event with all the usual suspects present. We met with the guys from Atomos and looked at the prototype Shogun. Looks like it'll be a great underwater recorder monitor. They had it sitting in a glass case, between a GH4 and an A7s. But not yet operational. The shogun may be a bit large to mount in a separate housing on top of the camera housing. Hard to get the physical balance right. Need to find a way to place it line astern with the camera. September is still the delivery date. We also wandered into the big Panasonic booth. Bear in mind that this is a conference for professionals - no general public allowed. The Panasonic stand, while they had a couple of their broadcast camcorders on display, was dominated by the GH4. They had a "set" with lighting, a motorbike and an attractive model with three or four GH4s aimed at the model. The GH4s, with their YAGH, were hooked up via SDI cables to 4K displays and recorder / monitors. The results were impressive. Very nice colours. Great details. You can see that Panasonic are serious about marketing this camera as a professional video camera. You could sense that they've realised that this will be a winner for them. Regards Peter 1 Share this post Link to post Share on other sites
CheungyDiver 53 Posted June 18, 2014 cheers Peter Enjoyed yesterday wandering around. Impressive stuff on show. The Panasonic booth is pretty massive. The set up with the GH4 is with the odyssey q7. Four HDSDI hooked up to the base unit. I guess each channel is full Hd. The colour coming out of the large 4k monitor is pretty impressive. This set up with Convergent is probably too cumbersome to house. If the image coming out of the Atomos Shogun is as good then we are in for a treat. Well at least for GH4 people. I'll upload some photos soon. Cheers Share this post Link to post Share on other sites
escape 84 Posted June 22, 2014 (edited) Last week, I was testing the new 180mm glass dome from Nauticam. Optic quality is excellent and balancing was way better then 6inch acrylic one. Here some frame grab from 4K UHD 3840x2160 clip taken with Pany 7-14mm (original resolution on the link). I'll try to share some sample footage soon. http://ejlabs.net/wp/wp-content/uploads/2014/06/GH4-frame-grab-01.jpg http://ejlabs.net/wp/wp-content/uploads/2014/06/GH4-frame-grab-02.jpg Edited June 22, 2014 by escape Share this post Link to post Share on other sites
Pete L 48 Posted June 22, 2014 Any idea of when that will be available mate? Share this post Link to post Share on other sites
escape 84 Posted June 22, 2014 Any idea of when that will be available mate? Hi Pete, I guess they'll release it with GH4 housing in a next few weeks. Share this post Link to post Share on other sites
Davide DB 417 Posted June 22, 2014 Hi EunJae, Could you give us some feedback on the whole new system? You came from Canon FF system and I love your film so I'm curious on your feelings on this completely different world Thanks Share this post Link to post Share on other sites
Davide DB 417 Posted June 22, 2014 Hi EunJae, Could you give us some feedback on the whole new system? You came from Canon FF system and I love your film so I'm curious on your feelings on this completely different world Thanks Share this post Link to post Share on other sites
escape 84 Posted June 22, 2014 Panasonic GH4 + 8mm FE, 7-14mm vs Canon 70D (APS-C) + Tokina 10-17mm, Canon 10-22mm. This is frame grab from video clip. Share this post Link to post Share on other sites
escape 84 Posted June 22, 2014 Hi EunJae, Could you give us some feedback on the whole new system? You came from Canon FF system and I love your film so I'm curious on your feelings on this completely different world Thanks - Widest rectilinear for GH4 is Pany 7-14mm but on 4k mode FOV is not that wide (for me). - I have smallhd dp4 and it's works nice (syncing faster then my canon dslr). - Focus Peaking and Zebra function is great to use. - I'm not happy with ergonomic of MIL housing when using with tray & handle (buttons on these housing are design for without handle). - I don't like color of MWB wide angle footage (compare to canon dslr) but surprisingly, native file include lot of color data and planty of room for fixing in post. 4K resolution from this small camera is great. I can't wait to try some macro shooting. 4 Share this post Link to post Share on other sites
SimonSpear 65 Posted June 23, 2014 - I don't like color of MWB wide angle footage (compare to canon dslr) but surprisingly, native file include lot of color data and planty of room for fixing in post. Hi EJ Very interesting although admittedly I've never seen any other camera WB like the Canon DSLRs do! I'd be interested to hear or see some examples about just how far can you push the image before it breaks up? I've love to see an example where the image falls apart and what exactly you had to do for that to happen... Cheers, Simon Share this post Link to post Share on other sites
escape 84 Posted June 24, 2014 (edited) https://vimeo.com/98986532 Original and after grade footage (4K UHD downsampled to 1080p). Cine-D (contrast -5, sharpness -5) and other setting were default. Crushed black, lifted red & blue channel each clip differently in post. Edited June 24, 2014 by escape 1 Share this post Link to post Share on other sites
SimonSpear 65 Posted June 26, 2014 Thanks for posting that example! Was that as far as you could push it? I had a brief play with some grabs and it looked like there was plenty more colour info even after Vimeo had crunched it up and spat it aback out again. My GH4 arrives tomorrow - it was about the only one left in stock in the UK! 1 Share this post Link to post Share on other sites
escape 84 Posted June 27, 2014 I'm not good at color correction and need to learn more. :-p Enjoy your GH4! Share this post Link to post Share on other sites
Pete L 48 Posted June 27, 2014 Good to see you are joining the revolution Simon Share this post Link to post Share on other sites
ScubaBob 37 Posted June 27, 2014 I say if you can get a beautiful look baked in, BAKE IT IN! Share this post Link to post Share on other sites
SimonSpear 65 Posted June 27, 2014 (edited) Yeah the 7D's have now officially retired.... The GH4 is already getting ready to go to work tomorrow and I hope it lasts out 5 years like the 7D's did! We'll hold a ceremony for them sometime - they have been workhorses both above and below water! Edited June 27, 2014 by SimonSpear Share this post Link to post Share on other sites
Pete L 48 Posted June 28, 2014 Simon, if you get the 7-14mm lens, make sure you black out the silver writing on the front of the lens as it will reflect in the 6inch dome. 1 Share this post Link to post Share on other sites
peterbkk 110 Posted June 28, 2014 Simon, if you get the 7-14mm lens, make sure you black out the silver writing on the front of the lens as it will reflect in the 6inch dome. Why don't lens manufacturers think about us underwater people? It's discrimination. Share this post Link to post Share on other sites
Pete L 48 Posted June 28, 2014 Not sure Pete, it's not very nice though By the way, how do we embed videos now? I can't seem to embed any videos. I thought we just pasted the link & it was automatically embedded but when I try to paste, nothing at all comes up. Share this post Link to post Share on other sites
Pete L 48 Posted June 28, 2014 (edited) https//vimeo.com/98909062 Edited June 28, 2014 by Pete L Share this post Link to post Share on other sites
