| Moderated by: chrisbet, |
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| 4K video | Rate Topic |
| Author | Post |
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| Posted by Eric: Fri Jul 5th, 2019 06:38 | 1st Post |
| Here's a slight departure... I've been playing with the wife's Panasonic FZ2000. Actually trying to familiarise myself with it, such that when she says 'it's not working properly' in the middle of nowhere, I have a fighting chance of sorting it out. Specifically I have been looking at video settings and came across 2 effects that I don't understand. So you video experts please explain .... When I set her camera to still photography the zoom range in the viewfinder is 24-480. If I switch to 4K video the zoom range changes to 37-740. It visibly zooms in the viewfinder. I don't understand why it's doing that? I thought 4K had more pixels? Surely zooming in changes that? I then wondered how it was achieving that zoom. Was it optical or digital? As we know digital zooms are always inferior to optical zooms. How could a superior format use inferior zooming? But here's the thing... when I take a frame grab from a 4K video, the image quality is just as good as a standard still shot. So the 4K zoom effect has given her 50% more reach without quality loss. I should add that this camera can actually take 4K still photographs without the need for frame grabbing a video when we would expect to have motion blur issues in some frames. But I thought I would try the worst case scenario and just grab a frame. And it was fine. Don't understand 
____________________ Eric |
| Posted by novicius: Fri Jul 5th, 2019 08:07 | 2nd Post |
| Is it filming in asp. ratio 16:9 then ?...that could explain some of it... I`m filming with smart phones , Huawei/Leica and Motorola/Hasselblad ( I have given up on filming with the D3s ) and with the M/H , photo is on 3:4 but filming is with 16:9 , but with the H/L , all is on 16:9...so far I `have n`t figured out either why/what the messrs. manufacturers are voodooing with. I think that You are Brave, filming with a photo camera. Anyone knows /care to explain ,about that video stuff ?
____________________ Back in Danmark I do not use my equipment to make photo`s .. I take photo`s to use my equipment The better I become at photography,the better my camera gets. |
| Posted by blackfox: Fri Jul 5th, 2019 08:24 | 3rd Post |
| I have a panasonic g80 which also shoots in 4K I don't fully understand it but the few results I have from it are very good . it also has the ability for pre.burst where it takes shots micro seconds before you depress the shutter and after it to .it actually works but how ? beats me .. at one point this week I was considering selling all my nikon gear again and investing in either a Olympus or panasonic top of the range camera either a panasonic g9 ,olympus omd1-mkii or a e.mix as I have there best long range lens the Leica 100-400 .. need to try one first though .. I honestly cant see any difference in i.q after post processing in either nikon/canon/ full frame or MFT gear .yes there probably is if you pixel nit pick but in general use no.as below one from the garden this week 
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| Posted by novicius: Fri Jul 5th, 2019 14:01 | 4th Post |
| " Selling All nikon gear " ...I know the feeling, if it was n´t for some Specialized lenses like the PC Nikkors and the Medical Nikkor 200 f5.6 ,...and a good deal of Nostalgia, I probably would. Some of the New Equipment is So Good...and yet, from all of the equipment I have, Only the Nikon`s Fire right away, all other stuff is putting me on hold.
____________________ Back in Danmark I do not use my equipment to make photo`s .. I take photo`s to use my equipment The better I become at photography,the better my camera gets. |
| Posted by jk: Fri Jul 5th, 2019 15:03 | 5th Post |
| All makes of camera are very good these days. It is only the control layout and interface that is different. I would use Canon stuff but their control interface does not work for me. They make some superb lenses especially the PC lenses and very good zooms. No point in changing if you are getting good results already.
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
| Posted by novicius: Fri Jul 5th, 2019 21:31 | 6th Post |
| Assembling a Camera/Lens rig for an afternoon walk is one thing,..but going long Haul ( several weeks ) on my own , staying in cheap skate hotels , meaning I Carry Everything , and I mean Everything !!...not even leaving a battery in the room, is a Whole Different matter. Camera(s) ..Lenses...Chargers...Batteries..mini-computer...and the like on my back , does make me take a Good Hard Look at how to...it takes me several weeks to assemble my long Haul outfit, I kid you Not ! Although I carefully plan meticulously, still, I encounter situations Unthought of, 11/2 year ago in the Philippines , I zip-lined...climbed a small mountain..got lost in a Large Dark Eerie neighborhood , while having my d3s with 55 f1.2...pc28 f3.5...20 f2.8... two flashes...Bessa L with Heliar f4.5...Charger ..4 en-EL4a...paraphernalia ( film..two flashes....Lunasix F ..etc. )...all in a LowePro AW slingback..., smartphone in shirt pocket...moving about in 30 C plus. Although it was to be a Photo Safari , I can Assure you that it was not always what I had in mind... Every gram counts,...Nikon coming out with something that is Different and yet the Same will only add to items adding Weight and Craving space , and will drive some photogs to other makes...I for one, have found stuff to Replace some of my photographic Nikon Equipment , actually already , most of my photo`s are taken with non-nikon equipment, Not that I have given up on Nikon, it`s Application is just Delegated to Special jobs. I have just Invested in a TENBA roller/backback to Hold my D3x or D3s ...Angle Finder...PC-E 24 f3.5...pc 28 f3.5 ...PC-E micro 85 f2.8...55 f1.2..TC201...TC16B...mebbe the 14-24 f2.8 or 20 f2.8 ( undecided yet )...MH21...four en-el4...Bessa L & Heliar 15 f4.5.. That`s for now, in a day or so the outfit could be different....
____________________ Back in Danmark I do not use my equipment to make photo`s .. I take photo`s to use my equipment The better I become at photography,the better my camera gets. |
| Posted by novicius: Fri Jul 5th, 2019 22:35 | 7th Post |
| Apologies to Eric for going astray...Sorry.
____________________ Back in Danmark I do not use my equipment to make photo`s .. I take photo`s to use my equipment The better I become at photography,the better my camera gets. |
| Posted by novicius: Sat Jul 6th, 2019 10:04 | 8th Post |
| back on Topic,.. I have read that some camera`s , when switched to video-mode , use a smaller part of the sensor , so as to be able to correct for camera movements keeping it Horizontal...I think it`s called Horizontal Stabilization. When such is the case, than that could explain why the Lens has become longer.
____________________ Back in Danmark I do not use my equipment to make photo`s .. I take photo`s to use my equipment The better I become at photography,the better my camera gets. |
| Posted by chrisbet: Sat Jul 6th, 2019 10:36 | 9th Post |
| 4K is 4096 x 2160 pixels - ie 8.4375 megapixels, on a 1" sensor giving 20.1 megapixels, the video is using less than half the sensor and I guess the cropping is what gives you the "apparent" zoom. Bit like using an FX lens on an APS-C camera.
____________________ If it is broken it was probably me .... |
| Posted by blackfox: Sun Jul 7th, 2019 04:45 | 10th Post |
| just been reading up on the spec on the new Olympus em1x and its extremely tempting up to 60fps or 18fps with tracking , and although only a 20mp sensor it cn shoot 50mp or 80mp files out-resolving anything else on the market . I know that Andy rouse is using one to good effect at the moment ,he is in Svalbard at the moment but I will see if I can arrange a meet up when he returns . plus they are only £2500 bnib. the other options are a Panasonic g9 or a olympus omd1-mkii most wildlife guys favour the latter though . there is also the Nikon mirrorless z6/7 to take into account but gut instinct says they have a lot of catching up to do .
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| Posted by novicius: Sun Jul 7th, 2019 08:03 | 11th Post |
| In the 1970 `s G M came out with two new models, the Opel Manta and the Ascona, someone I knew working for G M was going to buy a car , so when I asked him if he was going to buy one of those , he replied ..\" Never buy a first year model, because the first year they`ll pick out a hundred faults , and the second year they`ll pick out another thirty faults,but the third year they may get it right \".. That may hold true for camera`s as well, so , perhaps you would do wise to listen to your gut instinct.
____________________ Back in Danmark I do not use my equipment to make photo`s .. I take photo`s to use my equipment The better I become at photography,the better my camera gets. |
| Posted by novicius: Sun Jul 7th, 2019 08:06 | 12th Post |
| Wondering if Eric has checked his missus camera to see if it has that horizon -alignment thing, causing the Lens to appear to be longer.
____________________ Back in Danmark I do not use my equipment to make photo`s .. I take photo`s to use my equipment The better I become at photography,the better my camera gets. |
| Posted by jk: Sun Jul 7th, 2019 09:20 | 13th Post |
blackfox wrote:just been reading up on the spec on the new Olympus em1x and its extremely tempting up to 60fps or 18fps with tracking , and although only a 20mp sensor it cn shoot 50mp or 80mp files out-resolving anything else on the market . I know that Andy rouse is using one to good effect at the moment ,he is in Svalbard at the moment but I will see if I can arrange a meet up when he returns . plus they are only £2500 bnib.The Z7 I have is fine for landscape work as it is same as D850 (45MP) but is not as high fps as the Z6 (24MP) and also apparently the AF is better for action stuff but in fact it is the same AF unit. IMHO the D500 is best for wildlife. The AF spots on the D850 do not cover the whole screen which I find annoying, the Z7 covers more of the viewfinder but not the whole viewfinder like my Fuji XT2/3.
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
| Posted by blackfox: Sun Jul 7th, 2019 11:12 | 14th Post |
| Which is where I'm coming from with canikon being far behind the field , on my g80 which is a mid range model . Not only can I change the size of my actual a.f point by simply pulling it in and out with my fingers ,I can also build up a multi point a/f module to cater for instance birds flying left to right i.e a central line of two or three points right across the screen then a central block three to five deep . But saying that I still prefer the Nikon 7200 for ultimate I.q horses for courses but I keep a open mind . You do lose d.o.f with a smaller sensor as well with the mft . And noise can be a problem as well , but I find that they are easily adaptable to classic manual focus lenses and work very well with them due to I.b.i.s I have just got hold of a vivitar 200mm f3.5 which then becomes when mounted on the g80 a 400mm f3.5 with I.s via the body making it hand holdable .. I buy all classic lenses in Nikon mount as well so they will fit either body the g80 or Nikon D7200
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| Posted by Eric: Sun Jul 7th, 2019 12:29 | 15th Post |
novicius wrote:Wondering if Eric has checked his missus camera to see if it has that horizon -alignment thing, causing the Lens to appear to be longer.No it doesn't...or it doesn't mention it anywhere. But I think you and Chris are probably close to the explanation of what's going on. The frame grabbed files are smaller than the still files....but that doesn't explain their comparable IQ. Which is why I am confused. I was wondering if Graham had come across this issue being a life long film maker? ''I am a away for a few days so may get a chance to try the Panasonic 4K still photo mode ....to see if that is the same file size as a crop. I notice they are now offering 6k still photos and 4K videos on the latest Panasonic. Now totally confused. By the way guys ...can we stay on topic 
____________________ Eric |
| Posted by chrisbet: Sun Jul 7th, 2019 13:24 | 16th Post |
Eric wrote:You noticed .... 
____________________ If it is broken it was probably me .... |
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