Comments on: 1D Mark IV [CR2.5]

By: JohnG

JohnG — Sun, 04 Jan 2009 13:51:44 +0000

Any updates ?. If this is true, it will weight like 2 kg ?

By: CYRN

CYRN — Fri, 26 Dec 2008 14:32:17 +0000

If Winter Olympics is in February 2010, Canon better release the whatever cam by Apr 08… must give early adopters (read beta2 testers) sufficient time to bitch about it and then give Canon techs sufficient lead time to correct it before the Winter Olympics…. it will be a disaster if the cam gets fooled by backlit winter shooting condition. ;)

By: David Pastern

David Pastern — Tue, 23 Dec 2008 11:21:11 +0000

Like others, I doubt it’ll have 4 cards. I suspect 2. I suspect it’ll be both FF (16mp) and crop (10mp), probably 8fps @ 16mp and 12fps @ 10mp. Dual Digic IV chips. I doubt it’ll have video mode, but anything is possible. Live view of course, and a 3″ high resolution LCD screen. wi-fi and GPS are musts. ISO 50 – 25600. A refined AF system based on the 1D mark III’s AF system. I suspect that it’ll be released in October 2009.

Dave

By: Zac

Zac — Tue, 16 Dec 2008 22:13:34 +0000

OK,
1) Resolution
The resolution of the past two 1D series cameras (mkII and mkIII) is always the same as the resolution of the same generation prosumer (XXD) series camera. Example, 1DmkII = 8.2 MP same as 20D, 1DmkIIN = 8.2 MP same as 30D, 1DmkIII = 10.1 MP same as 40D.
Since the 50D has 15.1MP this is the most likely resolution for the 1DmkIV. This is also a rational choice, Nikon cameras have been typically 2MP ahead of comparable Canons, and until the D3, Nikon noise performance was crappy because of their 1.5x size. 15.1 is one tier advanced of 12 MP, the resolution of the D3, which is the camera that the mkIV will need to solidly outperform to regain Canon’s market dominance. It is higher enough to stay competitive with likely specs for a Nikon D4.
This would also give the camera excellent high ISO noise performance, which, more so than either frame rate or resolution, is the critical factor for PJs.
2) Memory cards
2 CF slots, 1SD slot
I use the SD slot in my mkIII for a backup card (when I runover the CF’s size). It would be ideal to have two ‘main’ card slots so one could shoot over the card limits and exchange the full card during a lag in the action as opposed to changing based on one card’s memory remaining. This also enables 100% usage of available memory, as opposed to changing cards before they are completely full.
The SD is for Canon’s data verification system, which is loaded into an SD.
3) Screen
3 inch screen, anti-reflective, high resolution for improved critical manual focus. NO TOUCH SCREEN! EVER! that would be so prone to accidental use, and touch screen resolutions are way lower than non touch screens. 3 inches is enough, no one I’ve ever met asks for more, and there needs to be room on the camera for control surfaces and a place to actually hold the camera.
4) AF
The mkIII’s AF system failed, and has effectively been rejected by most working professionals. Consequently it needs to be redone. It is likely that after the D3’s 51 point AF and the discovery of the mkIII’s AF instability that R&D was begun on a new one, knowing that this would be the case. Expect a lot of points, definately greater than 51, just because :)
5) liveview
mirror drop AF is actually useful for PJs/ people who like AF to happen quickly (the kind of people who buy 1D cameras)
I was surprised that there isn’t a firmware fix to add it to the mkIIIs, especially since the 40D has it. There will of course be contrast AF with face detect, that will be so the 50D doesn’t have some area that it outspecs the mkIV.
6) framerate
The limiting factor is not the shutter, 10fps for 35mm shutters have been around since the modified nikon F2 in the 1970s
It is not (to a great extent) the mirror. As previously stated the 1V HS could crank 10FPS, the D3 can do 11 in DX mode, in this mode the entire mirror and shutter still operate.
It IS the rate of getting the data off of the sensor, once in the buffer it can wait for the processor, and then be written to card. I like the idea of paralleled 4 digic IVs, digic V is not ready yet, as an actually noticeable improvement.
It is also the AF, the mk III is the only SLR in the world to AF at 10 fps, the D3 cuts out at 9, as did the EOS-1V HS, this might be overcome by a variable mode pellicle mirror, but that is not known.
7) Other
EF-S lenses will not and cannot be added (back focus distance), they are unremarkable when compared to the L lenses anyway.
GPS/WiFi unlikely, though the ability to geotag from GPS without using a WFT is.

By: Jim

Jim — Tue, 16 Dec 2008 15:15:07 +0000

Agreed- No need for EF-S support. I shoot with a 20D currently – advanced hobbyist I would say. I shoot pro sports for fun, college sports, landscape, portrait (for friends and family) and I have resisted buying a single EF-S lens. I am waiting to upgrade to a 1Ds when the Mk III replacement comes (if it is a FF- I just love those wide angle landscape photos on top of mountains) And thankfully I have a great job to afford the gear haha!

I also think a touch screen would be a bad thing for anybody. You would have to be looking at it to be able to choose settings. Most of us that are acustomed to our cameras know how to change the settings without removing our eyes from the eyecup…

By: Canon 1D Mark IV – First Rumor Specs. | Pixel Multiverse

Canon 1D Mark IV – First Rumor Specs. | Pixel Multiverse — Sat, 06 Dec 2008 21:06:21 +0000

[...] SOURCE : http://www.canonrumors.com/2008/12/03/1d-mark-iv-cr25/ [...]

By: Gecko

Gecko — Sat, 06 Dec 2008 07:34:02 +0000

Just an idea, but could the 4 card slots suggest parallel processing where even numbered images are processed on one processor/card set and odd numbered images are processed on the second processor/card set?

i.e. each processor/card set is handling every second 21mg image at 5fps

By: Brian

Brian — Sat, 06 Dec 2008 04:49:44 +0000

These specs seem too good to be true for the 1D Mark IV. What would they have to improve on the 1Ds Mark IV then? Even more resolution ?! That would be insanity.

By: Rasmus

Rasmus — Fri, 05 Dec 2008 17:18:39 +0000

As Sebastian I wonder why we need EF-S lenses on the pro bodies?
Is there any point to this I miss, or is it the same people who wants this that whants to remove the buttons an get a tuschscreen?

By: Sebastian

Sebastian — Thu, 04 Dec 2008 22:57:00 +0000

BTW: Where’s all that excitement for EF-S support coming from? Face it: So far Canon has only built consumer grade lenses for the EF-S mount.
Don’t get me wrong, at least some of those lenses deliver a quite reasonable quality and they’re well matched to the market they aim at. But who really wants to mount such a lens on pro body for presumably +5k bucks when there are superior L lenses around?

By: jnum

jnum — Thu, 04 Dec 2008 22:31:42 +0000

I highly doubt it will be the 21 mp sensor, this camera was built for speed, not only in shutter but ISO… with that kind of pixel density you won’t get AS good of an ISO. I say “as” because the 5D mark II seems to be doing pretty good. But I am guessing they will use 5DMKII tech in a lower sensor like say a FF 12-17 megapixel sensor to up the ante against nikon with a dual digic IV chip. And astounding ISO quality. My major guess would be 17 megapixels that would satisfy KJs earlier statement that two digic IV processors wouldn’t be able to handle 21 megapixels and at 17 megapixels it would equal 160mbs per second just filling the dual digic IV quota. Of course this sensor would be better than the 17 megapixel sensor of the 1Ds mark II.

By: Dean

Dean — Thu, 04 Dec 2008 20:03:14 +0000

What could we get with 2 DIGIC4 processors? Somewhere between 160 and 200 MP/sec?

At 10 fps that means a 16 to 20 MP sensor.
On a full frame camera that would be 7.3 to 6.5 micron pixels, i.e., slightly larger than the pixel size on the 1Dm3 / 1Dsm2. But, both full frame and 10 fps.

At 5 fps that means a 32 to 40 MP sensor.
On a full frame camera that would be 5.3 to 4.7 microns pixels, i.e., slightly larger than the pixel size on the 50D. Same quality per pixel as the 50D but 2.5 times as many pixels.

This is what I would expect Canon to release soon – one high speed camera with large, low noise, high ISO pixels and a second camera with tons of decent quality pixels for those that want detail.

Canon could decide to use 4 DIGIC4 processors or introduce a faster DIGIC5 processor. If they did, I would expect them still keep the two sensors outlined above, but change the 1D speed to 20 fps (via live mode?) and the 1Ds speed to 10 fps.

By: Dave

Dave — Thu, 04 Dec 2008 17:56:17 +0000

PLEASE! Touchscreen User Interface would be horrible for most real working pros. If you are looking at the screen, you’re not shooting or not even ready to shoot. Well placed and thought out dedicated mechanical controls are essential. Optional touchscreen might be ok. But I would much rather have a dedicated mirror lockup button.
Please, Canon, we need better working tools and fewer flashy specs. Save the gadget wars for some other market.

How about something useful like voice recognition to IPTC metadata: caption & keywords. Integrated GPS would take care of location, and also keep the clock properly set – even as time zones are changed.

By: EnslavedByCorgis

EnslavedByCorgis — Thu, 04 Dec 2008 15:45:52 +0000

I’ll throw this out there: wasn’t there discussion a year or so back from Canon about the 1D series eventually being unified , i.e., no separate D and Ds model? Could this be the first sign of that camera? I agree that this does sound a bit over the top (4 card slots?!), but most of it would be outstanding if true.