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Messages - Skirball

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31
EOS Bodies / Re: EOS 5D Mark III & Third Party Batteries
« on: December 12, 2013, 11:31:33 AM »
They do have a valid point about protecting their customers from poor quality counterfeits.  There's a story going round in cycling world this week about Specialized pulling up a bike shop called Cafe Roubaix, Roubaix being a name used by Specialized.  One of the issues Specialized has had to deal with was when they had a bike returned after it snapped causing significant injuries to the rider, only to find that the bike itself was a counterfeit.  Since then they've paid a law firm to track down counterfeiters - the Cafe Roubaix owner got caught up in the cross fire a bit.  As long as Canon continues to allow you to use a 3rd party battery, after clicking 'OK' to continue I'm fine with it.  They're warning you that your camera might get fried - but leaving it up to you to make the decision.  I still use a 3rd party battery as a spare, but use the original Canon as my primary battery.

There’s a big difference between third party components that are labeled as such, and plain out selling counterfeit wares.  Especially when your counterfeit is replacing an expensive process like carbon fiber manufacturing with a cheaper and inferior process, and when that has safety concerns.  Lithium Ion battery technology isn’t exactly rocket science, Canon just puts an over-inflated premium on theirs to milk some more money out of consumers.  Third party component manufacturing is a legitimate business model and helps keep manufactures honest (less dis-honest?).  If the quality of the product manufacturers components truly are better,  or the price is marginally more, people will buy them because it gives us a warm fuzzy feeling to see that name brand printed on the side.  You only need these kind of tactics when you’re trying to force people to buy your overpriced product.

32
EOS Bodies / Re: EOS 7D Mark II Spec List Surfaces [CR1]
« on: October 31, 2013, 04:41:49 PM »
Perhaps you imagine that the majority of press photographers spend their lives jetting around the world, dodging bullets, covering Olympics or tracking down rare species in the jungle.

Don't forget the ladies.  Lots, and lots, of lay-dees.

33
EOS Bodies - For Stills / Re: EOS 5D Mark III Firmware 1.2.3 Available
« on: October 30, 2013, 06:18:08 PM »
It never ceases to amaze me how many people are never satisfied with what Canon does.  If the 5D3 falls short of their expectations, why buy it in the first place?

The 5d3 fanboys get a little antsy in the pantsy when someone mentions a 1Dx.  Don't worry, there's an easy fix, just mention how much you love the 6D and their chest puffs out again.

I love the 6D!  (And I own both.)  Oh, wait!  PUUFFF!  Too late.   :o

Lol!

34
Pricewatch Deals / Re: Holy Crap! 6D for $1215 refurb from Canon!
« on: October 30, 2013, 06:13:04 PM »
$1,215 for a full frame, it can't get much better than this.

I can think of 1,214 things that are better.

35
Pricewatch Deals / Re: Holy Crap! 6D for $1215 refurb from Canon!
« on: October 30, 2013, 11:25:37 AM »
pretty clearly speculation and not claim, but maybe you were just looking to make a post in this thread...

Why would anyone make a post in a thread just for the sake of making a post in that thread?   ;)

HERE!  ;)

I see what you did there.

36
EOS Bodies - For Stills / Re: EOS 5D Mark III Firmware 1.2.3 Available
« on: October 30, 2013, 10:59:13 AM »
It never ceases to amaze me how many people are never satisfied with what Canon does.  If the 5D3 falls short of their expectations, why buy it in the first place?

The 5d3 fanboys get a little antsy in the pantsy when someone mentions a 1Dx.  Don't worry, there's an easy fix, just mention how much you love the 6D and their chest puffs out again.

37
EOS Bodies / Re: EOS 7D Mark II Spec List Surfaces [CR1]
« on: October 29, 2013, 08:57:23 PM »
I see what you’re saying, but that assumes that you’re combining photon counts from adjacent pixels, rights?  E.g., if you grouped every four pixels together and counted the totals as a single pixel it would be equivalent to the 10 mp sensor with the same theoretical SNR.  In that case, sure, more data is always better.  But if you’re not summing the pixels then although you’d have four times as many with the 40 mp, the full well capacity would have to 1/4 of the 10 mp.  Maybe not an issue at low ISO, but it’s going to limit you as you push higher, no?

The well capacity would be enough to be 1/4 but the light falling on each pixel is 1/4 as well, so there is no problem.

so the camp of my full frame captures more light really only captures more megapizels

More pixels with the same light per pixel = more total light.

Again, the mp number is irrelevant. The noise is part of the image itself -it has a discrete nature. Different pixel densities sample it in a different way but a lower pixel count is no better.

Large FWC has no impact on  high iso, only at base/low iso together with  the number of  the read out noise
QE ,Efficiency per unit area is the interesting part and  offcourse the sensor size.
Latest sensors from Canon has a QE around 50% compared with old 5d and  25%

Doesn't larger FWC allow more DR?  Of course, as I type this I'm thinking about the D800 its DR.  Ah hell, I'm going back to using the green square mode and not thinking about this crap.

38
EOS Bodies / Re: EOS 7D Mark II Spec List Surfaces [CR1]
« on: October 29, 2013, 08:42:04 PM »
I see what you’re saying, but that assumes that you’re combining photon counts from adjacent pixels, rights?  E.g., if you grouped every four pixels together and counted the totals as a single pixel it would be equivalent to the 10 mp sensor with the same theoretical SNR.  In that case, sure, more data is always better.  But if you’re not summing the pixels then although you’d have four times as many with the 40 mp, the full well capacity would have to 1/4 of the 10 mp.  Maybe not an issue at low ISO, but it’s going to limit you as you push higher, no?

The well capacity would be enough to be 1/4 but the light falling on each pixel is 1/4 as well, so there is no problem.

Well yes, that was my point.  You would have to reduce the FWC to 1/4 to maintain exposure.  So, you increase the ISO two stops.  Which would increase the noise at each pixel.

However, the thing I admittedly never thought about until reading this thread:  If you then downsample the image in post to the same size as the 10 mp, do the pixels average out to give the same general level of noise as the 10 mp sensor?  The more I think about it, at low ISO the answer has to be yes.  But, if you’re really pushing the high ISO are the results so far off that it will screw with the final average?  And I guess I don’t fully understand how the averaging would work considering the Bayer layer – statistically wouldn’t more noise mean more issues with the green channel, so averaging out the noise isn’t going to be so simple.

Sorry to ramble on mindlessly, it just got me thinking.  I can’t believe I never thought of it that way, I was always of the camp of ‘so long as you have enough resolution for your uses, the bigger the pixels the better’.

39
EOS Bodies / Re: EOS 7D Mark II Spec List Surfaces [CR1]
« on: October 29, 2013, 07:52:10 PM »
Also, why is it that pixel size does not matter? I believe a lower resolution sensor of the same physical size would have proportionally larger photosites, which would exhibit less noise by gathering larger amount of light.

True for each photosite but not true for the image as a whole. What matters is the total light collected on the sensor. Different pixel densities mean different ways to sample the projected image, and a lower sampling rate is never better. Of course, there are also all those technological challenges.

Think about this: a 40mp sensor contains all the information a 10mp sensor can collect because you can always bin in software (ignoring the tech challenges for a moment). But it contains more information.

I'm just guessing but a full fram 40mp full frame camera will probably have the same size pixels as a 24mp crop sensor. 

so the camp of my full frame captures more light really only captures more megapizels

If my maths are correct I think the crop would be more around 15 mp.

I don't understand your second comment.  Are you implying that a full frame doesn't capture more light than a crop sensor?

40
EOS Bodies / Re: EOS 7D Mark II Spec List Surfaces [CR1]
« on: October 29, 2013, 07:48:04 PM »
Also, why is it that pixel size does not matter? I believe a lower resolution sensor of the same physical size would have proportionally larger photosites, which would exhibit less noise by gathering larger amount of light.

True for each photosite but not true for the image as a whole. What matters is the total light collected on the sensor. Different pixel densities mean different ways to sample the projected image, and a lower sampling rate is never better. Of course, there are also all those technological challenges.

Think about this: a 40mp sensor contains all the information a 10mp sensor can collect because you can always bin in software (ignoring the tech challenges for a moment). But it contains more information.

I see what you’re saying, but that assumes that you’re combining photon counts from adjacent pixels, rights?  E.g., if you grouped every four pixels together and counted the totals as a single pixel it would be equivalent to the 10 mp sensor with the same theoretical SNR.  In that case, sure, more data is always better.  But if you’re not summing the pixels then although you’d have four times as many with the 40 mp, the full well capacity would have to 1/4 of the 10 mp.  Maybe not an issue at low ISO, but it’s going to limit you as you push higher, no? 

41
EOS Bodies / Re: EOS 7D Mark II Spec List Surfaces [CR1]
« on: October 29, 2013, 04:47:28 PM »
That said, as a consumer of Canon products and basically an amateur enthusiast who just wants to get better and better at photography so I can take great photos in virtually all conditions, I cannot fathom why Canon would make a product such as the 7d2 "better" than the 1DX.

They wouldn’t.  Even if Canon has some technological breakthrough that allowed them to create a crop sensor that had better performance than the best FF sensors they make, they would put all the bells and whistles on it, put it in a “pro body”, and sell it for more than the 1Dx, because they can.  There’s not a business man alive that wouldn’t know to milk a tech advance like that.  And while they’re pulling in the sales from that they can create a megapixel monster for a FF camera with the same pixel density, and then a FF sensor using the same technology but normal density that would allow even greater high ISO performance.  And they can wait a good several years before letting that technology trickle down to the consumer levels.

42
Lenses / Re: Beach kit
« on: October 29, 2013, 01:17:07 PM »
Heading to Goa for a week on friday.... What do you guys recommend for the beach?

I'm taking on the trip:
5d mkiii
450D
40 STM
24 1.4
70-200 2.8
2x tc III
B+W CPL
Small travel tripod

For days on the beach i was thinking of taking the 450D and 40 STM...  what do you guys think?

Suggestions/advice?

This might be sacralidge, but personally when I'm at the beach I usually leave the big gear in the room safe.


Your sacrilege is like 'say 3 hail Marys' minor infraction stuff compared to my blasphemy.  I'd leave half that stuff at home, and whatever half I took would come with me to the beach unless I was staying at a really nice hotel with a trustworthy safe.  But that's me.

43
EOS Bodies - For Stills / Re: What to do with an old D60
« on: October 29, 2013, 12:53:32 PM »
Ah, got it.   Sawadee kap.  No, although I've been to Asheville I'm probably far more familiar with the geography of Thailand than I am North Carolina.

44
EOS Bodies - For Stills / Re: What to do with an old D60
« on: October 29, 2013, 12:28:33 PM »
Have an old D60 with the battery grip, in good working order.  Not worth enough to bother selling it.  Toyed with the idea of making it a dedicated IR unit.

Any other creative ideas?

BB

Dear Sir, Mr. Brand B.
If you live in USA., All Cities and Counties Where you live, There are The Technical College in your home town, that might Teach the Photography Classes. Yes, My Home town in Wake County, NC., USA  too, I donate all of my Old , and Unuse Photographic equipment to the college, AND the Teacher will Let the Student ( Poor and do not have money to buy they equipment), To use in that semester, And Return to the Classes, for use in the Next Semester.
Yes, That are Tax Shelter for Us too.----Great in Both ways.
Surapon .
PS, If you live in another country, You can donate to the High School or Technical College too.

You're from North Carolina?

45
EOS Bodies / Re: Canon EOS 3D ???
« on: October 29, 2013, 11:27:10 AM »
It's true.  Do not trust advertising.  Trust the pundits at CanonRumors.com.

War is peace. Freedom is slavery. Ignorance is strength.

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