October 26, 2014, 12:47:49 AM

Author Topic: 5D3...why only usb 2.0?  (Read 5115 times)

PhilDrinkwater

  • Guest
Re: 5D3...why only usb 2.0?
« Reply #15 on: March 13, 2012, 10:13:16 AM »
Moreover, I think usb2 bandwidth is enough for tethered shooting (as long as live view output does not exceed 60MB/s).
Personally I disagree. USB3 or ethernet would have helped tethered shooting.

canon rumors FORUM

Re: 5D3...why only usb 2.0?
« Reply #15 on: March 13, 2012, 10:13:16 AM »

akiskev

  • Canon 6D
  • *****
  • Posts: 326
    • View Profile
    • My flickr gallery
Re: 5D3...why only usb 2.0?
« Reply #16 on: March 13, 2012, 10:45:23 AM »
Moreover, I think usb2 bandwidth is enough for tethered shooting (as long as live view output does not exceed 60MB/s).
Personally I disagree. USB3 or ethernet would have helped tethered shooting.
What is your objection?

......
BUT
I'd expect new Canon cameras to have usb3 since it's backwards compatible. No users would complain, plus with usb3's 625 MB/s, Canon would have no restrictions bandwidth-wise to implement clean 1080p output* via usb.

*
1920 * 1080 = 2,073,600
2,073,600 * 32bpp = 66,355,200 bits/frame
66,355,200 * 30fps = 237.3 MB/s
You disagree to that too? It was in the same message.
Flickr | Canon EOS 3 | Canon EOS Digital Rebel XTi
EF 17-40mm f/4L | EF-S 17-55 f/2.8 IS | EF 70-300mm f/4-5.6 IS | EF 100-400 f/4.5-5.6L
Zeiss 35mm f/2.4 | Zeiss 50mm f/1.4 | Zeiss 85mm f/1.4 | Zeiss 200mm f/2.8 | Zeiss 80-200 f/4

Orion

  • Guest
Re: 5D3...why only usb 2.0?
« Reply #17 on: March 13, 2012, 10:58:37 AM »
Sometimes I feel that a new camera body is made "dirty" and soiled by the lack of total improvement, such as USB 3.0, and raw HDMI out, and the fact that why not have dual same cards. It's just little thingsa like that that get the blood boiling, when you know they made a great camera but they forgot to fix the little things. It's like taking a shower and forgetting to wash your face with soap. DAMN!

it's like the 'ol Nike saying: "just do it!" and stfu about it already!
« Last Edit: March 13, 2012, 11:01:22 AM by Orion »

Ellen Schmidtee

  • Canon 6D
  • *****
  • Posts: 441
    • View Profile
Re: 5D3...why only usb 2.0?
« Reply #18 on: March 13, 2012, 11:25:05 AM »
Because it's called Canon!!
They can put a 63 zone metering into 5D3 from their cheapest model Rebel T3 for next three years rather than using the latest one from the 1DX. In this way, they can also cut the AF point-linked spot metering feature off.(you can find this feature from all Nikon bodies)

Typical answers from Canon user:
1. Oh, that's good enough.
2. There's nothing wrong with it, it works well. 

I don't give a damn whether the 5Dmk3 has a USB 2 or USB 3 port. A USB 3 card reader is a cheap one off expense (already bought one), and moving the card from the camera to the read & back again takes a few seconds (which I spend as it is), and I'd rather bitch about more important features.

Ellens is correct here in the case of SDHC class 10 cards they are approx 25Mb/s or thereabouts this is around the limit of USB2.0 so for that purpose no reason for USB3.0 as the card transfer (read) wont reach USB3.0 speeds!
however im unfamiliar with CF speeds anyone?

Top of the line CF cards today are ~100MB/s. I'm uncertain whether the whole computer could read data that fast, esp in face of having to move the head to update file system structures (add file name to directory, update free space map, etc).

UHS-I SD cards should be about as fast. SanDisk has a 95MB/s UHS-I SDHC cards.

Mt Spokane Photography

  • EF 50mm F 0.7 IS
  • *********
  • Posts: 8896
    • View Profile
Re: 5D3...why only usb 2.0?
« Reply #19 on: March 13, 2012, 11:30:42 AM »
UHS-I SD cards should be about as fast. SanDisk has a 95MB/s UHS-I SDHC cards.

You do know that the 5D MK III does not support the UHS protocol?

If you have a UHS card reader you are ok, but the article is about USB 2 in the camera body.

Edwin Herdman

  • Canon 7D MK II
  • *****
  • Posts: 543
    • View Profile
Re: 5D3...why only usb 2.0?
« Reply #20 on: March 13, 2012, 12:40:50 PM »
I have a number of different ideas going through my head (possible licensing, low volume of part availability, power requirements) but haven't found anything to demonstrate what the actual problem is.

I've had a computer with USB 3.0 ports since 2008 but I have had zero devices that use it in all that time.

I do agree that USB 3 would help many kinds of shooting, and there's no problem with transfer speeds to a PC - if hard drive speeds are a problem then you need to set up RAID or maybe even use a SSD.

It would have been nice to roll out with the new cameras, but not essential.  I think Canon is right to play it safe on the CF front too, although Nikon is moving quickly to the new QXD or whatever it's called, many users are not ready to move to a new format, or to deal with the smaller support base available for the new format.

DJL329

  • Canon 7D MK II
  • *****
  • Posts: 471
    • View Profile
Re: 5D3...why only usb 2.0?
« Reply #21 on: March 13, 2012, 01:19:23 PM »
Why no USB 3.0 on the 5D Mark III?  For the same reason the 5D Mark II has the same autofocus as the Mark I:  so that Canon could have something to upgrade to get you to buy the next one.   ;)
Canon EOS 5D Mark III | EF 14mm f/2.8L | EF 28mm f/1.8 | EF 50mm f/1.4 | EF 85mm f/1.8 | EF 100mm f/2.8L IS Macro | EF 300mm f/4L IS

canon rumors FORUM

Re: 5D3...why only usb 2.0?
« Reply #21 on: March 13, 2012, 01:19:23 PM »

Ellen Schmidtee

  • Canon 6D
  • *****
  • Posts: 441
    • View Profile
Re: 5D3...why only usb 2.0?
« Reply #22 on: March 13, 2012, 01:33:15 PM »
UHS-I SD cards should be about as fast. SanDisk has a 95MB/s UHS-I SDHC cards.

You do know that the 5D MK III does not support the UHS protocol?

Actually, I didn't. I have good CF cards, and it would take me a while to buy a 5Dmk3 (assuming I'd buy one), so I didn't check for specific SD features support.

If you have a UHS card reader you are ok, but the article is about USB 2 in the camera body.

Didn't plan for either UHS card reader or UHS cards.

dolina

  • 1D X
  • *******
  • Posts: 1014
    • View Profile
Re: 5D3...why only usb 2.0?
« Reply #23 on: March 13, 2012, 01:40:20 PM »
I bought a USB 3.0 card reader from Lexar. Would be nice to have USB 3.0 in-body but not a must anymore.
Visit my Flickr, Facebook & 500px and see my photos. :)

canon rumors FORUM

Re: 5D3...why only usb 2.0?
« Reply #23 on: March 13, 2012, 01:40:20 PM »