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Thread started 15 Sep 2014 (Monday) 07:05
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Canon officially announces the 7D Mark II

 
archer1960
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Sep 18, 2014 07:41 |  #841

pknight wrote in post #17162182 (external link)
Of course, anyone who thought that it would match a FF sensor in those areas was smoking something pretty strong. If it is better than the 70D wrt low-light, high-ISO noise, with everything else that it has, it is going to be a great camera. It just won't be what it isn't, which is a camera that excels at every photographic task, which seems to be what some expected.

Yup.


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archer1960
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Sep 18, 2014 07:42 |  #842

Markd102 wrote in post #17162265 (external link)
More likely the new 1DX

Yup. It's been my opinion all along that Canon's ground-breaking sensor will debut in a 1D body, not in any crop or lower-level FF body.


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pwm2
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Sep 18, 2014 07:45 |  #843

GyRob wrote in post #17162773 (external link)
I should have been more clear It does matter with Some Lenses.
Rob.

The lenses can't see the battery. The lenses can't know if they receive the battery voltage directly, or if the camera body has stepped up the voltage to the same voltage of a three-cell Li-Ion battery.

You can run 230V mains equipment from a 12V car battery, and nothing stops a camera body with a two-cell battery to put out the corresponding voltage of a three-cell battery to the lens.

With todays switching circuits, it's all a queston of power. You may take a high voltage low current and convert to a low voltage and high current. Or low voltage high current and convert to high voltage low current.

The battery has no problem supplying enough power to both feed the camera body and a step-up converter that gives 12V of enough current to the lens. It's just a design decision and political decision by Canon - do they want a camera with a two-cell battery to focus as fast as an 1D body?


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archer1960
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Sep 18, 2014 07:46 |  #844

pwm2 wrote in post #17162782 (external link)
The lenses can't see the battery. The lenses can't know if they receive the battery voltage directly, or if the camera body has stepped up the voltage to the same voltage of a three-cell Li-Ion battery.

You can run 230V mains equipment from a 12V car battery, and nothing stops a camera body with a two-cell battery to put out the corresponding voltage of a three-cell battery to the lens.

With todays switching circuits, it's all a queston of power. You may take a high voltage low current and convert to a low voltage and high current. Or low voltage high current and convert to high voltage low current.

The battery has no problem supplying enough power to both feed the camera body and a step-up converter that gives 12V of enough current to the lens. It's just a design decision and political decision by Canon - do they want a camera with a two-cell battery to focus as fast as an 1D body?

No, they don't.


Gripped 7D, gripped, full-spectrum modfied T1i (500D), SX50HS, A2E film body, Tamzooka (150-600), Tamron 90mm/2.8 VC (ver 2), Tamron 18-270 VC, Canon FD 100 f/4.0 macro, Canon 24-105 f/4L,Canon EF 200 f/2.8LII, Canon 85 f/1.8, Tamron Adaptall 2 90mmf/2.5 Macro, Tokina 11-16, Canon EX-430 flash, Vivitar DF-383 flash, Astro-Tech AT6RC and Celestron NexStar 102 GT telescopes, various other semi-crappy manual lenses and stuff.

  
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GyRob
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Sep 18, 2014 08:02 |  #845

pwm2 wrote in post #17162782 (external link)
The lenses can't see the battery. The lenses can't know if they receive the battery voltage directly, or if the camera body has stepped up the voltage to the same voltage of a three-cell Li-Ion battery.

You can run 230V mains equipment from a 12V car battery, and nothing stops a camera body with a two-cell battery to put out the corresponding voltage of a three-cell battery to the lens.

With todays switching circuits, it's all a queston of power. You may take a high voltage low current and convert to a low voltage and high current. Or low voltage high current and convert to high voltage low current.

The battery has no problem supplying enough power to both feed the camera body and a step-up converter that gives 12V of enough current to the lens. It's just a design decision and political decision by Canon - do they want a camera with a two-cell battery to focus as fast as an 1D body?

Chuck Westfall:
"Lens drive speed: Because of its higher voltage battery, the 1D Mark IV can supply an initial burst of power to select L-series USM telephoto lenses (limited to certain EF super telephotos )* that drives them twice as fast as normal for the first second of operation. The 5D Mark III can't do that because its battery is lower voltage, and also because the camera body is not designed to accept higher voltage even if it was available**."

* so only with some lenses can the 1D big battery actually increase speed.
** which explains why battery grips do not help AF speed. The bodies they attach to can't let the extra power "burst" to the lens.

Rob


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Tareq
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Sep 18, 2014 08:09 |  #846

Well, so the replies here showing that the 7DII will not surpass that 1DX AF speed most of the time, just could came closer if not the same, it is not enough for me even i know i can use it perfectly, i will wait little longer as i don't shoot these days and gave up sports because they don't pay me good, but i am thinking very seriously now to work in newspaper so photography will be my income or profession no doubt.

If this camera will be cheap like less than $1500 then i may think about it as a replacement for some of my old cameras including 1-series [30D, 1D2n, 1D3,...etc], but as i said, no rush, i still have time this year and my 1DX is still strong to serve me as one camera when i don't shoot with 2 cameras now at once in an occasion nowadays.

I would like to see the crop from this camera, because using 1-series and 5D series and crop the result is still great to go, but with non those series and i remember 7D they are not much great with crop even they have the crop factor, in sports i always crop a lot.

Last thing, how the focus and the quality when using TCs, 1 series are kings with TCs over other series when you throw TCs in use, so how will this camera perform when using TCs [1.4x or 2x or even both].


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Sep 18, 2014 08:24 |  #847

garycoleman wrote in post #17162086 (external link)
Seems like a great camera. I hope it won't have AF inconsistency like the original 7D. I went through 2 copies and they drove me bananas.

And who is to say it won't have these issues? The 7D did and the 70D does on some copies. Canon hasn't told anybody what the issue is.The 7D2 apparently has a similar AF system that is apparently the culprit. I'll wait to see reviews from real live users on this issue.




  
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Sep 18, 2014 08:28 |  #848

Tareq wrote in post #17162820 (external link)
Well, so the replies here showing that the 7DII will not surpass that 1DX AF speed most of the time, just could came closer if not the same, it is not enough for me even i know i can use it perfectly, i will wait little longer as i don't shoot these days and gave up sports because they don't pay me good, but i am thinking very seriously now to work in newspaper so photography will be my income or profession no doubt.

If this camera will be cheap like less than $1500 then i may think about it as a replacement for some of my old cameras including 1-series [30D, 1D2n, 1D3,...etc], but as i said, no rush, i still have time this year and my 1DX is still strong to serve me as one camera when i don't shoot with 2 cameras now at once in an occasion nowadays.

I would like to see the crop from this camera, because using 1-series and 5D series and crop the result is still great to go, but with non those series and i remember 7D they are not much great with crop even they have the crop factor, in sports i always crop a lot.

Last thing, how the focus and the quality when using TCs, 1 series are kings with TCs over other series when you throw TCs in use, so how will this camera perform when using TCs [1.4x or 2x or even both].

The bolded part made me nostalgic.


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Sep 18, 2014 08:30 |  #849

i-G12 wrote in post #17162844 (external link)
And who is to say it won't have these issues? The 7D did and the 70D does on some copies. Canon hasn't told anybody what the issue is.The 7D2 apparently has a similar AF system that is apparently the culprit. I'll wait to see reviews from real live users on this issue.

I think there are still people on this forum who are of the opinion that the 'soft image' issue with the 7Dc is mostly operator error ;)


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Sep 18, 2014 08:32 |  #850

i-G12 wrote in post #17162844 (external link)
And who is to say it won't have these issues? The 7D did and the 70D does on some copies. Canon hasn't told anybody what the issue is.The 7D2 apparently has a similar AF system that is apparently the culprit. I'll wait to see reviews from real live users on this issue.

Regardless of the issue, this camera will have good sales, many don't care about how consistency is the AF, only us as perfectionists worry about how good/accurate/consiste​nt the AF will be.

In fact, this camera didn't impress me yet with all the specifications i read, maybe because i feel it is not so much greater/better/stronge​r than my 1DX yet, only newer digic or higher mp and let's say slightly better high ISO, not much for me to make it as a right choice for me immediately, so i will wait until Canon produce a real upgrade to 1DX or at least an upgrade to 1D4 [hope 1D5 if they still think to keep 1-series 1.3x crop body line].


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Sep 18, 2014 08:33 |  #851

travisvwright wrote in post #17162851 (external link)
The bolded part made me nostalgic.

What do you mean?


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Sep 18, 2014 08:39 |  #852

GyRob wrote in post #17162809 (external link)
Chuck Westfall:
"Lens drive speed: Because of its higher voltage battery, the 1D Mark IV can supply an initial burst of power to select L-series USM telephoto lenses (limited to certain EF super telephotos )* that drives them twice as fast as normal for the first second of operation. The 5D Mark III can't do that because its battery is lower voltage, and also because the camera body is not designed to accept higher voltage even if it was available**."

* so only with some lenses can the 1D big battery actually increase speed.
** which explains why battery grips do not help AF speed. The bodies they attach to can't let the extra power "burst" to the lens.

Rob

Yes, I know about that specific text you quoted. But it isn't relevant to what I have been posting.

The quote text does not mean that you can't create a 5D4 with a 2-cell battery that inside the body steps up the voltage to 12V making the lens see exactly the same voltage as if it was mounted to a 1D body.

The 5D3 doesn't have any such step-up electronics. So it doesn't emit any 12V to the lens. But that was a design choice. It could have emitted 12V even with the currently used battery. Just that Canon didn't want it to focus as fast as the 1D-series bodies. Given the cost of the 5D3, it wasn't a cost issue that the body doesn't step up the voltage - lots of devices costing 1/100 of a 5D3 is able to step up the battery voltage and supply very significant power levels to some gear that needs a higher voltage than what the used batteries supplies.

So the last sentence in that quote should have ended with: "because the camera body is not designed to accept higher voltage even if it was available, or to step up the available voltage to 12V".


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Sep 18, 2014 08:51 |  #853

Tareq wrote in post #17162856 (external link)
What do you mean?

I'm guessing something to the effect of nostalgic for when newspapers actually paid photographers. Or just employed them. There are photojournalists still, but their numbers are few and if existing photog pay hasn't been cut, new photog pay definitely has been.


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Sep 18, 2014 08:57 as a reply to  @ hokiealumnus's post |  #854

http://digitalcamerapo​lska.pl …d-mark-ii-zdjecia-testowe (external link)
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Sep 18, 2014 09:27 |  #855

hokiealumnus wrote in post #17162886 (external link)
I'm guessing something to the effect of nostalgic for when newspapers actually paid photographers. Or just employed them. There are photojournalists still, but their numbers are few and if existing photog pay hasn't been cut, new photog pay definitely has been.

Well, i have some friends advising me not to work in newspaper or photography with government even paid as i may hate photography and when i feel stressed then i can't run away from photography to photography itself, so their point is to keep photography as a hobby and leisure time rather than a career.


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