Crop Factor Change for 4K on Canon EOS 5D Mark IV Included in Coming Update & More

Canon Rumors Guy

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We have been sent more information about the upcoming C-Log update to the EOS 5D Mark IV, while this comes from a new source, it’s pretty detailed.</p>
<p><strong>Canon EOS 5D Mark IV C-Log Update:</strong></p>
<ul>
<li>All video output will still be 8-bit.</li>
<li>Sampling for DCI 4K will be increased to a 5632 x 2970 pixel sensor area resulting in a 1.27x Crop factor.</li>
<li>Sampling for UHD will be from a 5472 x 3078 pixel sensor area resulting in a 1.29x Crop factor.</li>
<li>Both modes are accurately down-sampled to their final resolutions.</li>
<li>Existing frame rates will remain the same.</li>
<li>The current 1:1 4K sampling mode will remain an option for situations benefiting from the 1.78x Crop factor.</li>
<li>There will also be new full-sensor 3K modes added including 60fps and HDR 24fps.Both will use a line-alternating sampling method, so quality will be inferior to the improved 4K format (but better than the existing FullHD 1080p format.) It is unclear whether the file resolution in the final firmware will be the full 3360 x 1890 format or down-sampled to 3072 x 1728.</li>
<li>FullHD 1080p will also use this 3K full-sensor mode with down-sampling for a noticeable improvement in perceived resolution.</li>
<li>FullHD 1080p will also receive a modest frame rate boost to 72/75fps.</li>
<li>The EOS 5D Mark IV will gain the XF-AVC file format at 120Mbps (4:2:0) and 200Mbps (4:2:2). Both formats should require low enough data rates to accommodate UHS-I U3 type SD Cards.</li>
<li>Reports relating to a possible service job for the 5D Mark IV are the result of the heat sinks on current units not performing well in some environments when used with the newer firmware. This is because of the increased processing load from the enlarged video sampling area. Newer units will ship with an improved heat sink while existing 5D Mark IV units can be retrofitted. Pricing is unconfirmed for that servicing.</li>
<li>The newer firmware will still work in non-serviced cameras, but this may result in premature temperature warnings.</li>
</ul>
<p><em>More to come…</em></p>
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Is this an April Fool's joke 4 days early? The 5DIV becomes an entirely different beast with these updates. While I've seen this type of update from companies like Fuji, Ricoh or Blackmagic, I've never seen this scope of update from Canon ever. This feature set directly encroaches on some of their own C series offerings.

If this is true, Canon must be listening to us video/stills hybrid folks and it comes way earlier than I would expect which would have been 3 years down the road in the 5DV.
 
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It sounds too good to be true. A gut check says it is false. Also, a couple of things just don't make sense.

"72/75 fps" is just odd, unless it is primarily intended for PAL.
5D currently does not have UHD, so what made Canon decide to add it.
S35 mode on the 1DC is the only Canon DSLR video mode that has used downsampling to the best of my knowledge.
3K?
"XF-AFC"?
SD-Cards for video on the 5D?
 
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ahsanford

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Aug 16, 2012
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Okay, so is this list is accurate, it would imply that Canon is making a rather dramatic course correction here: lots of new functionality and they have changed the design of a flagship level product early in its cycle. Further, critically, they are servicing cameras to retrofit them -- even though that happens with odd launch issues (light leak --> internal tape retrofit), this certainly appears to me to be a more significant change.

I could be wrong, but this reads much more like 'People were p---ed about the 5D4 video specs/performance enough to pursue a fairly involved / major change' than it does 'Hey, we figured out a slick way to get you C Log without melting your rig, so here you go, kids!'

...or were they just bumping up the 5D4 because their latest financial analysis said that a 24 MP x 6 fps x 45 AF tilty flippy 6D2 would cannibalize the 5D4 a lot more without a clear bump in video specs. ::) I say that half in jest. As much as I riff on 6D2 cannibalization of 5D4, I still think this announcement is more about appeasing the 5D faithful than paving the way for clearer 5D4 / 6D2 feature/price/prestige segmentation.

- A
 
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I think Canon finnaly get the memo.
- Marques Brownlee (best tech reviewer) "Preety much everyone making sort of customer 4K camera ... except Canon." https://youtu.be/f0NdOE5GTgo
- Casey Neystat (probably most famous vlogger) - recently switchet to Sony https://youtu.be/GTjy9VlsNaY
Just if it's true.. I hope they wake up and continue even with other products.
 
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If we all were Canon fanboys, we would not had ...

this update ever!
So criticism Canon is a useful thing and you fanboys, may say now "Thank You!" 8)

A new Codec (XF-AVC and not XF-AFC i presume - pls. correct that admin) and a way better crop mode ... hmm, now suddenly, the Canon 5D4 is appealing to me. But i still miss the flip screen, will be a Firmware for that, too?! ::)

Now, i am pretty sure that 6D2 will have 4k and this is good! ;)
 
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