Andrew Reid

The Sigma 18-35mm is a far better option. F1.8 vs F4! Problem is in UHD at 1.74x crop you're going to get 32mm at the wide end rather than 28mm.

"Full frame" is a photographic standard so it measures 3:2 in terms of aspect ratio. So surely it is more correct to say "4K on the 5D Mark IV is a 1.74x crop of full frame" "Full frame" is not a 16:9 box. OK we can measure only horizontally and that is 1.64x crop But what about UHD 3840px? That would change the crop again and most people deliver in 16:9 So effectively the 5D Mark IV crop factor is more often than not 1.74x. Anyway no matter what I think.... I hope we can we get a clearer consensus on how the crop factor calculations break down - Reading the thread so far and various contributor math - DCI 4K measured diagonally from the 3:2 photographic area it is 1.74x crop DCI 4K measured diagonally from the 16:9 video area of full frame is 1.64x crop DCI 4K (4096 pixels wide) is a horizontal crop factor of 1.64x So what is the UHD 4K crop if your delivery needs to be in the usual aspect ratio and not the 17:9 of DCI 4K? Back around 1.74x measured horizontally? And what is the industry standard way of measuring video crop factors - the ones stated by manufacturers themselves - is it horizontally or diagonally? And do they take into account the full sensor 3:2 or 4:3 aspect ratio if measuring diagonally or just the 16:9 portion? And as for the lenses - EF-S mount lenses WILL NOT work on the 5D Mark IV as the rear glass intrudes too far into the mount... Although I hear on some lenses like the 10-22mm you can pop off the plastic shield at the back and it might work - no mirror hit? And so Tokina 11-16mm F2.8 is best wide for 4K and you would need to swap lenses when you go back into FF stills mode

I did skip maths class, it's fucking uninteresting. I am more interested in images But it is 1.74x crop from the full 3:2 sensor as Micro Four Thirds is a 2x crop from the same, so the 1.64 I can't accept, as it is measured from a different area to all the other cameras on the market

No but to keep things consistent with other cameras sporting different aspect ratios, it's the total sensor crop that matters not the crop from a letterbox 16:9 of the sensor For instance Micro Four Thirds is a 4:3 2x crop of a 3:2 full frame sensor Therefore to make the comparison worthy, 5D Mk IV 4K video is a 1.74x crop of the same Unless we stop talking about Micro Four Thirds 16:9 video as a 2x crop? But I feel that horse has somewhat bolted!

I think the problem is in LOG mode the Sony cameras apply a wide gamut to colour which leaves it at the mercy of compression and bad colour paths in post. The white balance...something is going on there too... If they had just adjusted the gamma curve like Canon LOG and left colour alone we wouldn't have all these threads and messed up grades in the first place so the blame has to lie at Sony's door really

If it were measured only horizontally then you could have a weirdly extreme letterbox aspect ratio and call it 1.0x crop if it measured the full width of the sensor, so that can't be how they calculate it surely? Full sensor area of the 5D Mark IV is 3:2

I am guessing the main difference are the teams behind them Looks like Canon have distinct stills and video teams who work separately on programming the chips These guys are primarily controlled by their bosses though And I am pretty sure their bosses follow a strict overall company strategy Which is to divide EOS photography lines and Cinema EOS lines very carefully so they don't cannibalise one another in terms of pro stills or video features

I hope the GH5 comes in 2016, it may be delayed to 2017. Indeed Super 35mm CMOS from Panasonic would be great. They have already made a full frame sensor for Leica so have the raw material in-house to do it Micro Four Thirds should be the APS-C of Panasonic's range Where would Canon be without full frame?!

Didn't Samsung put their Super 35mm CMOS from the NX1 on the open market? Why did Nikon or Canon not buy this, back it up with more Samsung chips as is common in the wider semiconductors industry and build their own camera around it? There are no excuses for Canon and Nikon not to push things to the limit.... I am tired of the lame excuses for products and their wide margins at the expense of innovation Frankly it is embarrassing. How much more evolution can you do with a 1970's SLR?

Hey Luke. enjoyed your posts but I believe the crop is actually measured diagonally not just horizontally? Vertically it is a 2x crop... 4480/2160 = 2.07x So average the vertical and horizontal and we meet in the middle... actually the exact maths I can't be too precise about but I guess it is an average of 1.64x and 2.07x? How do you measure the diagonal crop? 18-35mm would be a solution to get 31.32mm to 60mm... Not a very appealing zoom range To get a 24-70mm is a lot harder

I see it as a wider social phenomenon And 30 year olds into Star Wars... grow up! I think it's a case of arrested development... When the masses just want to watch comic book movies... instead of more adult stuff... it is truly a sign of the times isn't it? Overprotective parenting and a lack of challenges in the modern world = onesie wearing pansies incapable of depth "Trump for president!"

It depends on the resolution of the entire sensor. If you have a Super 35mm sensor of 8MP then you don't need to crop for 4K. If you have a 30MP full frame sensor you need a massive crop to get that down to 4K!

I believe 1.64 is overly generous. Relative to the full frame sensor is is 1.74 My pre-release calculations based on 30MP were right... around 1.7x crop. It certainly looks like it based on the 8MP hole in the 30MP frame. A severe crop make no mistake Don't let the 'explorers of light' sugar coat it by making comparisons to Super 35mm! Nah Canon are like Sony Enormous corporate giant plodding along with giant marketing and hype Sony are like Nikon... A more hardcore focus on non-casual 'gamers' Nikon are like...... Sega. Obsolete Panasonic are like Nintendo. Innovative, smaller specs, lower budget but famous nevertheless

It's really misleading... They use a still life scene consisting of about 6 stops of dynamic range at best, shot at close focus. The differences in resolution are minimised and it doesn't really tell us very much. The 80D for example looks like abject shit when you shoot landscapes in video mode with it Something that a stamp pinned to the side of a light box doesn't quite convey as well... Wow you have low standards. RED... What is the point!??! Fastest contradictory statement ever on the forums? The 5DS actually does quite good 1080p so if you have a lot of money to flush down the toilet on mediocrity it is your next camera....

No.

Rogue's gallery is a good way to put it. Christ Johnny Depp now looks like a scene from Oldboy What a fuck up. That's what happens when you fall into a rut and role out the same thing year after year Johnny Canon!

4K uncompressed RAW to plain old CF card? Doubt it... and it would still be a horrific crop. Magic Lantern peaked with the 5D Mark III and they have moved on now... I don't expect them to take much interest in future Canon cameras now they involved in making their OWN camera hardware.

Such an underrated camera... Ergonomics of a Canon or Nikon without the 1970's mirror SHIT Smallest 4K file sizes on the planet but the highest quality compression..... THANK YOU H.265 YOU ARE THE FUTURE IT IS JUST NOBODY ELSE KNOWS IT!!!! Ultra clean and noiseless ISO 800, acceptable 1600, falls off a cliff after that but who cares? So does a RED Epic! Great battery life, great EVF... heck it has an EVF... Unlike my 1D C!! Guess which was cheapest! Articulated screen but still feels like it is built like a tank and I had mine out in the pouring rain.... didn't pose an issue. Weather sealed yet articulated screen.... Canon take note. Just look at the images... lovely! Great colour and detail The S lenses... some of the best Super 35mm this side of PL cinema $30k stuff. It is a goth of a camera It is discontinued Nobody cares about it but the ones in the know... The GX85 has fantastic colour... Just the right balance between natural 'scientifically correct colour' and memory colour.

Oh god... not another $12,000 DSLR!

And if you don't desire: Stills DSLR size of form factor Decent codec 10bit Slow-motion Full frame Quite a lot to write off isn't it?!

That's correct about Google.

If true then the timing is weird. It's already quite overdue compared to previous release cycles for the GH1,GH2,GH3,GH4. I wonder if they have had a late major change - such as new sensor - to incorporate? All speculation at this point....

Anley Kubri loves his Cano amera Beware of AL Ucking aughty robot Deleting thos illy massiv MJPE iles fro Anley's driv An I love th scen in ehistoric tim wit th monkeys... Datin ack to MJPEG times at the beginni of th univers

Yeah it is over. What a shame the 5D Mark II never got a proper sequel to excite video users. It was such a remarkable moment in filmmaking tools. A democracy in the making. Unfortunately Canon's marketing and margins killed the dream almost as soon as it started. Cinema EOS is all about extracting massive margins. The photography stuff has peaked, it is all down hill in terms of sales from now on in the age of the smartphone. I am happy in the hybrid video/stills niche as we have plenty to look forward to from the other manufacturers...... So maybe it is time to get over the hurt of the past 5 years and move on.

Aside from the 1D C their C-line can't do decent stills. I want both in one camera. GH5 it is then! It's not the crop by itself which is the issue, it is the mismatch between the lens mount and the sensor crop size. On a Micro Four Thirds camera the lenses are designed to fit the 2x crop sensor. And the lack of mirror means special optical designs like the Metabones Speed Booster XL are possible, effectively giving you a 1.3x crop of your full frame Canon lenses instead of 2x. So I don't even consider the GH4 as a 2x crop camera. The 5D Mark IV is a 1.74x crop camera and stuck with it. You pay that much money for a full frame camera, you expect it to shoot full frame.... no? You expect it to have LOG as well!!