jonpais Posted March 30, 2017 Share Posted March 30, 2017 I was under the impression that e stabilization added an extra 5-10% crop to the image, but I've never used it, so can't confirm. You definitely want to enter the correct focal length as you're zooming or IBIS won't function properly. Quote Link to comment Share on other sites More sharing options...
zetty Posted March 31, 2017 Share Posted March 31, 2017 4 hours ago, Ken Ross said: Stab, yes, you're largely correct. When you see the hand (sounds scary ;)), that is the IBIS, sensor-based system. If you couple that with a Panasonic OIS lens that is equipped to work with IBIS, then you get the IBIS2 and "DUAL 2" shows up in your VF/LCD. DUAL 2 is simply IBIS2...not sure why they don't call it that. From what I understand Dual IS 2 is the next iteration of IBIS+OIS software, currently only compatible with these few new lenses. OIS lenses with pre-GH5 firmwares only support Dual IS 1 mode (like one in GX85). Haven't had time to test any of this properly but all of my OIS equipped lenses only work in Dual IS 1 mode. Quote Link to comment Share on other sites More sharing options...
Fritz Pierre Posted March 31, 2017 Share Posted March 31, 2017 5 hours ago, Ken Ross said: Stab, yes, you're largely correct. When you see the hand (sounds scary ;)), that is the IBIS, sensor-based system. If you couple that with a Panasonic OIS lens that is equipped to work with IBIS, then you get the IBIS2 and "DUAL 2" shows up in your VF/LCD. DUAL 2 is simply IBIS2...not sure why they don't call it that. Now adding e-stabilization is an additional electronic (not sensor-based stabilization) that lays over the IBIS. That's where the sensor cropping occurs. You'll have to see if the cropping vs the additional stabilization is worth it. At least as it's implemented in the G85, I don't see much of a difference with E-stabilization. The good thing is there's no IQ deterioration with it engaged. @Ken Ross...is it possible to assign the manual lens focul length setting in the camera with IBIS to a function button...can you share how you access that adjustment in the camera? Quote Link to comment Share on other sites More sharing options...
Ken Ross Posted March 31, 2017 Share Posted March 31, 2017 59 minutes ago, zetty said: From what I understand Dual IS 2 is the next iteration of IBIS+OIS software, currently only compatible with these few new lenses. OIS lenses with pre-GH5 firmwares only support Dual IS 1 mode (like one in GX85). Haven't had time to test any of this properly but all of my OIS equipped lenses only work in Dual IS 1 mode. Yes, Dual IS2 is the combination of IBIS+OIS in the lens. Some older lenses with firmware upgrades will support IS2. An example is the Panasonic 14-140. Quote Link to comment Share on other sites More sharing options...
tihon84 Posted March 31, 2017 Share Posted March 31, 2017 Quote Link to comment Share on other sites More sharing options...
midloch Posted March 31, 2017 Share Posted March 31, 2017 Hi guys, here is how to use LUT VLOG709 when shooting with V-LOG. It is a great help! :-) Midloch Quote Link to comment Share on other sites More sharing options...
Sage Posted April 1, 2017 Share Posted April 1, 2017 The GH5 internal codec is most definitely limited. In that 10 bit footage, I see distinct color patches in skin tone when very zoomed in. In motion, full-scale, it is not too big of a deal to me. Its 'good enough' for an internal codec. What is more concerning is distinct banding in the sky at the beginning of the footage. I have watched a lot of GH5 footage, including more 10 bit v-log footage from Pampuri where the sky *wasn't banding, so I have a theory.. Perhaps more later. I will likely purchase the camera after NAB Quote Link to comment Share on other sites More sharing options...
tonysss Posted April 1, 2017 Share Posted April 1, 2017 On 30. 3. 2017 at 11:03 PM, Stab said: Great. Thanks for the explanation Ken. That clears it up. I will do some tests next week to how the IBIS influences my shots. I am using a Sigma 18-35 on a Speed Booster XL so it becomes a 11.5-22.4mm. Do you guys think i need to manually change the focal length input everytime I zoom in or out? Or do you think that a middle ground setting, let's say 17mm would provide decent results? I use a 15 mm setting Quote Link to comment Share on other sites More sharing options...
Stab Posted April 1, 2017 Share Posted April 1, 2017 4 hours ago, tonysss said: I use a 15 mm setting Hi tonysss, Thanks. And, are you happy with results? Does it stabilize well? Are there weird artifacts? Could be great if u could just leave it at 15mm and don't need to think about it anymore! Quote Link to comment Share on other sites More sharing options...
AaronChicago Posted April 1, 2017 Share Posted April 1, 2017 28 minutes ago, Stab said: Hi tonysss, Thanks. And, are you happy with results? Does it stabilize well? Are there weird artifacts? Could be great if u could just leave it at 15mm and don't need to think about it anymore! I'm curious about this as well. I had it set to 35mm with the Sigma 18-35 and the stabilization on the 18mm end was shitty. I guess you do need to manually change it? Quote Link to comment Share on other sites More sharing options...
Stab Posted April 1, 2017 Share Posted April 1, 2017 7 minutes ago, AaronChicago said: I'm curious about this as well. I had it set to 35mm with the Sigma 18-35 and the stabilization on the 18mm end was shitty. I guess you do need to manually change it? 35mm is pretty far off if you ask me, IF you have a Speed Booster in between. I would also guess that setting it to the wide end of the lens yields better results then at the tele end. In this case 18 mm or 12 mm with a Speed Booster. But yea, I need to do some extensive testing later. Quote Link to comment Share on other sites More sharing options...
tonysss Posted April 1, 2017 Share Posted April 1, 2017 55 minutes ago, Stab said: Hi tonysss, Thanks. And, are you happy with results? Does it stabilize well? Are there weird artifacts? Could be great if u could just leave it at 15mm and don't need to think about it anymore! I have Metabone speedbooster Nikon, and 15 mm works great for me Quote Link to comment Share on other sites More sharing options...
Ian-G Posted April 3, 2017 Share Posted April 3, 2017 Thank you for this article, really helpful. I read your article a while back re using metabones BMCC adapter on GH4, worked brilliantly. I'm having trouble with using it on GH5 - it occasionally asks for camera to be 'turned off and on' again. I've invested in the BMCC adapter so really hoping I can use it! Can you help? Is there a work around?? Thanks kindly Quote Link to comment Share on other sites More sharing options...
zetty Posted April 22, 2017 Share Posted April 22, 2017 On 01/04/2017 at 7:16 PM, AaronChicago said: I'm curious about this as well. I had it set to 35mm with the Sigma 18-35 and the stabilization on the 18mm end was shitty. I guess you do need to manually change it? So it's not getting this information electronically from the lens even with an active adapter? I thought it would have considering it provides full EXIF data.. Quote Link to comment Share on other sites More sharing options...
AaronChicago Posted April 23, 2017 Share Posted April 23, 2017 18 hours ago, zetty said: So it's not getting this information electronically from the lens even with an active adapter? I thought it would have considering it provides full EXIF data.. I had a dumb adapter for the Nikon version of the Sigma lens, so it wasn't receiving any data. Quote Link to comment Share on other sites More sharing options...
Fritz Pierre Posted April 23, 2017 Share Posted April 23, 2017 33 minutes ago, AaronChicago said: I had a dumb adapter for the Nikon version of the Sigma lens, so it wasn't receiving any data. Same here....until I have the camera....when you're say shooting on a 28-70...I don't zoom, but I do use different fields of view on the zoom, so when I'm at 50mm on the manual zoom, do I adjust to wherever I am in FOV on the lens or do you average zooms out? Quote Link to comment Share on other sites More sharing options...
AaronChicago Posted April 23, 2017 Share Posted April 23, 2017 3 hours ago, Fritz Pierre said: Same here....until I have the camera....when you're say shooting on a 28-70...I don't zoom, but I do use different fields of view on the zoom, so when I'm at 50mm on the manual zoom, do I adjust to wherever I am in FOV on the lens or do you average zooms out? If it's not a speedbooster then I'd say just use the actual focal length. When I use a Nikon speedbooster I multiply my desired focal length by .7 and manually enter that number. That could be wrong so someone else may chime in. Quote Link to comment Share on other sites More sharing options...
buggz Posted April 23, 2017 Share Posted April 23, 2017 On 3/30/2017 at 5:03 PM, Stab said: Great. Thanks for the explanation Ken. That clears it up. I will do some tests next week to how the IBIS influences my shots. I am using a Sigma 18-35 on a Speed Booster XL so it becomes a 11.5-22.4mm. Do you guys think i need to manually change the focal length input everytime I zoom in or out? Or do you think that a middle ground setting, let's say 17mm would provide decent results? I have a GH4, and the 0.67 XL Speedbooster, and the Sigma 18-35, and many other Canon mount lenses, love it. However, I thought the math was, 18x2=36 36x0.67=24.12 ? Quote Link to comment Share on other sites More sharing options...
Emanuel Posted April 23, 2017 Share Posted April 23, 2017 54 minutes ago, buggz said: I have a GH4, and the 0.67 XL Speedbooster, and the Sigma 18-35, and many other Canon mount lenses, love it. However, I thought the math was, 18x2=36 36x0.67=24.12 ? It is actually 0.64x, not 0.67x :-) "The new Speed Booster XL 0.64x reduces the full-frame crop factor of the Panasonic GH4 from 2.0x to 1.28x, thus effectively transforming these cameras into APS-H format." "For example, a 50mm f/1.2 becomes a 32mm f/0.80" http://www.metabones.com/products/details/mb_spef-m43-bt3 http://www.metabones.com/assets/a/stories/Metabones_Speed_Booster_XL_0.64x_Press_Release_5Jun2015.pdf Stab math is correct. Quote Link to comment Share on other sites More sharing options...
buggz Posted April 23, 2017 Share Posted April 23, 2017 Thanks, confusing, I don't want to polute this thread, so I will read on how to figure all this out, as the different video modes and aspect ratios also affect this, argh... Quote Link to comment Share on other sites More sharing options...
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