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Messages - 3kramd5

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76
EOS Bodies / Re: Do Sensors sell the Camera?
« on: August 28, 2014, 11:03:43 AM »

All of this Sensor Hype is probably meaningless to that crowd as well just the same as it is to 90% of those buying Sony and Nikon equipment.  If this were all that important, Nikon cameras would be selling a lot better than Canon and that is not what we really see.

The problem with that comparison is you use the sensor every single time you take a photo, and not "the system".
So... it would seem that what you are saying is that it is the overall "system" that matters and not only the sensor or the camera.

That's an odd way to read the sentence you quoted...

77
EOS Bodies / Re: Are These The EOS 7D Mark II Specifications?
« on: August 28, 2014, 10:59:15 AM »
both images were ... from the same area of the sensor.

Which is the reach-limited scenario, no?

Yes...and that's the scenario where smaller pixels help.

I agree.

More pixels on subject is better for detail.

More area on subject is better for light.

More pixels on subject with more area on subject (high resolution, large format) is best. And naturally, you pay for it.

78
EOS Bodies / Re: Are These The EOS 7D Mark II Specifications?
« on: August 28, 2014, 10:51:47 AM »
both images were ... from the same area of the sensor.

Which is the reach-limited scenario, no?

79
EOS Bodies / Re: Do Sensors sell the Camera?
« on: August 28, 2014, 09:57:59 AM »
with two more stops of shadow-lifting ability, with a sensor that has read noise in the deep shadows that has a nice random appearance without any banding of any kind, I could probably get away with my GND filters, some hefty shadow lifting, and one single shot...instead of bracketing 5, 7, 9 shots and having to deal with some frustrating HDR mergers.

If you're looking for two more stops in the shadows, why are you bracketing 5, 7, 9 shots? Just bracket 2, one for the highlights and one two stops brighter. That would significantly mitigate the frustration of merging (fewer options for ghosting to occur, less labor, etc). You're still left dealing with the GND gradient, but that's true in both of your scenarios.

80
EOS Bodies - For Stills / Re: 5DIII dual cards
« on: August 27, 2014, 05:22:35 PM »
In that case, the only plausible explanation is that they deliberately crippled the SD card slot so that the 1DX with its dual CF slots would look more valuable by comparison.  Which is just sad.

I find that implausible. I can think of zero 1Dx owners who would have instead bought at 5D3 had the second slot been faster. Canon knows its market pretty well, I doubt they thought for one second that a UHS SD slot in the 5D would have eaten away any 1D sales.

Disabling things in firmware (like AFMA in entry level cameras) could be a crippling-to-drive-higher-end-sales move. But the speed of the second slot in a camera which costs half as much... I just don't see that affecting sales one bit. The 1Dx sells because of speed and build, not because its second slot is CF as opposed to slow SD.

Practical reasons could include things beyond timing. Maybe the second slot was not a priority and they decided to burn down their stock of older components. But "let's make the second slot in this camera slow so that our $7,000 model with its 14FPS mechanism, RGB metering, three processors, weather sealing, dual batteries, 1/250 flash sync, 200k ISO, etc. looks a little better" seems as unlikely as "they didn't know about UHS."

81
EOS Bodies / Re: Are you planning to purchase a 7D2
« on: August 27, 2014, 11:13:24 AM »
Before I got the tammy 150-600 I had no interest. Now... possibly :P

82
EOS Bodies / Re: Are These The EOS 7D Mark II Specifications?
« on: August 27, 2014, 10:02:09 AM »
Yeah Canon may eventually add 4k. That just shows Canon is no longer an innovator, just a  follower.

Yeah, maybe Canon should follow Sony's innovative lossy compression that eliminates data from RAW files, or follow Panasonic's innovative inability to make a successful dSLR and give up like they did.  'Cuz, you know, DPAF and the ability to accurately autofocus track a moving subject during video, that's certainly not innovative.   ::)

Didn't you know?

in·no·va·tion
noun \ˌi-nə-ˈvā-shən\

: being first to market with features I want.

83
EOS Bodies - For Stills / Re: 5DIII dual cards
« on: August 27, 2014, 09:23:46 AM »
I am presuming the associated circuitry was finalised in advance of UHS because I don't see how intentionally leaving it off would benefit them. I could obviously be wrong, but I can not come up with a scenario where the program manager made a decision to go with a slow secondary slot when a better option was viable and cost effective. I understand the notion of crippling, but that seems like a silly way to do it. The second card is nice but not strictly necessary. If you want the fastest performance, pull the SD. The 5D3 demographic isn't going to buy a 1dx due to a slow secondary slot, nor is 1dx demographic going to buy a 5d3 instead had it a faster secondary slot. Ergo I have to assume a more practical reason, such as timing.

I would assume that the circuitry was copied straight out of the 5D Mark II, and that they just didn't bother to update it for the 5D Mark III because they figured nobody would bother to use the SD card anyway.  :)

erm, but the 5D2 uses CF only :P
The SD + CF combo is new to the 5D3, right? Or have they used it in other cameras (and if so: there's the practical reason)?

In other news, my SanDisk Extreme 128GB SD card just fell apart by itself after copying photos from a European vacation to my computer. Three of the four edges delaminated and the write protection tab fell out! Initially SanDisk rejected my RMA request because the pictures of the card showed "physical damage" which they don't cover. After I insisted that the damage was the result of the card delaminating without mishandling it, they decided to honor their warranty and are swapping out the card. For those of you with the 5D3, definitely record your photos to both CF and SD!

Yah, I hate how flimsy SD is. Even putting it into a card reader I'm always afraid of breaking it

The SD in my 5D3 only comes out if it absolutely has to (i.e. I need something off the camera, but I have neither a CF reader nor a USB cable handy).

84
EOS Bodies / Re: Do Sensors Make the Camera?
« on: August 26, 2014, 04:17:24 PM »
and that means the split pixels it does not improve the file quality.

That's not what he was getting at. He's saying (I believe) they already have a finer process, and citing DPAF as proof, even though they currently are using it for something other than IQ.

85
EOS Bodies / Re: Do Sensors sell the Camera?
« on: August 26, 2014, 01:20:18 PM »
The choice is Canon, Nikon and Sony. Two of those three are now providing substantially better images.

I have no experience with soNikon (my Nikon doesn't have a Sony sensor). I do however have experience with Canon and Sony. My Sony (A7R) doesn't provide substantially better images than my Canon cameras. It simply doesn't. There are some cases where I may wish to edit shadows and I can do so with less difficulty using the A7R, but the difference isn't as substantial as you make it out to be. Perhaps some of that is due to the lossy RAW format of the Sony, but I doubt it. Perhaps that has to do with what I'm shooting or how I shoot it.

How do your Sony and SoNikon images compare to your Canon images?

Push comes to shove, if someone calls me up and asks "hey do you want to go shooting" or "hey can you come shoot something for me," the camera I'll grab is the 5D3, not the A7R. YMMV.

86
EOS Bodies / Re: Are These The EOS 7D Mark II Specifications?
« on: August 26, 2014, 09:19:31 AM »
snip

You of course are correct. I was fixating on the number of possible entries, not the entries themselves. This is why we don't drink and post. Carry on.

87
EOS Bodies / Re: Are These The EOS 7D Mark II Specifications?
« on: August 26, 2014, 12:11:40 AM »

0-16384 (14 bit ADC) is infinity?  ???



16,384 = 2^14.

The lowest value the sensor records, however, isn't 0.

It's 2^0. Were it zero, any increase would be infinite on a percentage basis.

But it isn't.

1-2-4-8-...2^bitdepth

The range is from 0 to (2^N)-1
it is 0 to 16383

Not from a digital logic standpoint. Call it (2^N)-526.363 in decimal if you like, but doing math based on the digital data means you start at 1.

88
EOS Bodies / Re: Are These The EOS 7D Mark II Specifications?
« on: August 25, 2014, 11:58:10 PM »
What happens when you divide any number by zero? What happens when you take the logarithm of zero or infinity?

What happens? You evaluate the limit, per LHospital. We don't have that case here, though.

0-16384 (14 bit ADC) is infinity?  ???

16,384 = 2^14.

The lowest value the sensor records, however, isn't 0.

It's 2^0. Were it zero, any increase would be infinite on a percentage basis.

But it isn't.

1-2-4-8-...2^bitdepth

89
EOS Bodies - For Stills / Re: 5DIII dual cards
« on: August 25, 2014, 10:01:50 PM »
Yah, I know. It's not crippled, it just pre-dated faster SD.

Not even close.

  • March 2010: UHS-I spec released.
  • September 2010: First UHS-I flash cards shipped.
  • March 2012: Canon 5D Mark III shipped

UHS-I had been final for two years when the 5D Mark III shipped, and UHS-I cards had been available on the market for a year and a half before the 5D Mark III shipped.

Not supporting UHS-II is justifiable, as the cards didn't hit the market until April of this year.  But not supporting UHS-I?  That's corner cutting at its finest.

I am presuming the associated circuitry was finalised in advance of UHS because I don't see how intentionally leaving it off would benefit them. I could obviously be wrong, but I can not come up with a scenario where the program manager made a decision to go with a slow secondary slot when a better option was viable and cost effective. I understand the notion of crippling, but that seems like a silly way to do it. The second card is nice but not strictly necessary. If you want the fastest performance, pull the SD. The 5D3 demographic isn't going to buy a 1dx due to a slow secondary slot, nor is 1dx demographic going to buy a 5d3 instead had it a faster secondary slot. Ergo I have to assume a more practical reason, such as timing.

90
EOS Bodies / Re: Are These The EOS 7D Mark II Specifications?
« on: August 25, 2014, 05:47:13 PM »
The only part I'd be concerned with is the ability of the A7r to hold a long/heavy lens on a tripod.

er... what? The tripod holds the lens, the lens holds the camera.

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