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Messages - dilbert

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31
EOS Bodies / Re: DR from 5Ds will be 2 stop better then 7D mk II
« on: February 11, 2015, 09:17:07 AM »
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Maybe the 5DS will buy them some time to develop a newer sensor. That would be fine with me, since if I had to choose I think  somewhere around 35 MP is plenty of resolution even for landscapes.

Buy them some time how? And how much time?

Lead time for a DSLR like the 5Ds is probably 3 to 4 years - maybe 5.

Does Canon have that long to keep Sony and Nikon at bay?

Hard to tell.

But if the 5Ds doesn't deliver (and neither does the 5D4) in terms of DR and low noise then you'll see more and more people leaving Canon for Nikon/Sony.

Canon is running out of time.

32
EOS Bodies / Re: First DSLR with 3G/4G?
« on: February 11, 2015, 09:10:26 AM »
Whichever of Canon or Nikon makes the first DSLR with 3G/4G connectivity that allows photographers in the field (for newspapers, etc) to upload either directly to a cloud storage (e.g. Google Drive) or Instagram/twitter (with predefined tags) will make a killing - especially if the other is more than a couple of months without it.

Would easily fit into a 1DX size camera.
One can do that with 70D. Connect cell phone to 70D wifi and upload pic to facebook.

Is that driven by the camera or the phone?

If I think about what it means to be a photographer doing a live event (news, sports, etc), when I chimp on my camera afterwards, I want to select which photos get uploaded then and there.

Or maybe it goes from the camera straight to the 'net.

I don't want to have to use another device (i.e. phone) to review or use, so if the pairing can be created once and it is there ready to go- beautiful.

Of course part of that exercise means shooting at an image size appropriate for the destination. Or even sending a different size over WiFi to what is kept on card. An instagram or facebook post doesn't need a full 20MP image uploaded to it. A reduced in size 800x600 is likely a better choice and maybe 300k rather tham 3MB.

33
EOS Bodies / Re: DR from 5Ds will be 2 stop better then 7D mk II
« on: February 11, 2015, 08:20:10 AM »
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If Chuck was talking about overall digital architecture in stating that the S is equivalent to the 3 since they're both 14 bit platforms, but that the the other spokesman was talking about sensor level noise, perhaps the raw files will have better flexibility in the shadows while still being equivalent from an overarching perspective.
...

I think this is the closest to the truth for now.

34
EOS Bodies / Re: DR from 5Ds will be 2 stop better then 7D mk II
« on: February 11, 2015, 08:17:48 AM »
We have some VERY expensive test equipment that we use to verify manufacturers figures on dynamic range. The most honest reading we have had in Cinematography are the ones Arri claim for the Alexa XT which is around 14 stops. It uses large pixels compared to Sony, Canon and Red but equally gives the lowest resolution of these cameras. The C300 / C500 give around 11.7 stops this is a figure similar to that found in the 5D MKIII & 6D. Sony sensors as seen in the A7R and Nikon D800 series are also close to 14 stops averaging around 13.8 a figure similar in the F65 and F55 they also show virtually no visable banding unlike Canon.

I think I heard someone volunteering to DR bench test the 5DS for us ...  ::)

And his numbers for Canon cameras align very well with DxO.

35
EOS Bodies / Re: DR from 5Ds will be 2 stop better then 7D mk II
« on: February 11, 2015, 08:05:37 AM »
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However, I don't use Canon for landscapes. I gave up on shooting landscapes, at least the kinds of landscapes I really like, once I realized how bad Canon's read noise is in my 5D III, and having seen little improvement in the 6D, 70D, 7D II. I don't have much time for landscapes...I certainly can't go driving all about the Colorado Rockies all the time to find amazing vistas, and it's even more difficult to find them with good light. On top of that, I'm putting all my resources into astrophotography these days. With astro, you have no option but to dig way deep into your signal data...and once you do, there is simply no denying the fundamental and radical differences in data quality between Canon...and the rest.
...

Pity that Sony do lossy compression with their raw files (which I hear impacts star trails) or else it might be worth trying an A7-something plus adapter.

36
EOS Bodies / Re: DR from 5Ds will be 2 stop better then 7D mk II
« on: February 10, 2015, 05:51:36 PM »
Jrista, why do you even shoot with Canon? You seem to bash them so much. The d810a was just announced. Maybe you should just make the switch. Sounds like you'd be a lot happier than you are here.

Some of us shoot Canon because we have been since before digital...

Some of us shoot Canon because up until the 5D2, Canon was the best game in town and everyone thought that whilst the Canon sensor output hadn't really changed in quality, that was ok.

Then along came the D800 and Sony.

At that point it became obvious that Canon's sensors were not the best in town and since then people who bought into Canon are wondering what Canon have been and are doing.

37
Lenses / Re: Sigma 24mm f/1.4 Art announced..
« on: February 10, 2015, 06:57:45 AM »
Where are all of the messages about how it won't autofocus correctly without sacrificing some virgins and doing a rain dance?

38
EOS Bodies / Re: More Confirmation EOS C300 Mark II Will be 4K
« on: February 10, 2015, 12:09:05 AM »
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I think the rumor of an new Alexa competitor is dead-on though. The C500 has been a dog in terms of sales, as it's DR fell short of almost all of it's competitors. I'm guessing the C300 drops in price, and the replacement for the C500 (probably a new # or name) debuts with a new chip, with alexa like DR and highlight roll off, at a substantial increase in price --think f55/red.
...

Sorry, you're wrong here.

As countless other threads on canonrumors have decided, the only people that need lots of DR and landscape photographers but they can use HDR methods ,etc, to make up for that.

Clearly the people who choose Alexa over Canon because of DR need some re-education from the experts in these forums.

Otherwise, this issue pretty much confirms that Canon has (or had) a DR problem with their (current?) previous sensor design.

Not sure where you're being sarcastic.
...

How dare you accuse me of being sarcastic! There are many people that post on CR that are deadly serious about this. Just try and argue anywhere that Canon's lack of DR is a real problem and see what kind of treatment you g

39
EOS Bodies / Re: More Confirmation EOS C300 Mark II Will be 4K
« on: February 09, 2015, 11:01:02 PM »
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I think the rumor of an new Alexa competitor is dead-on though. The C500 has been a dog in terms of sales, as it's DR fell short of almost all of it's competitors. I'm guessing the C300 drops in price, and the replacement for the C500 (probably a new # or name) debuts with a new chip, with alexa like DR and highlight roll off, at a substantial increase in price --think f55/red.
...

Sorry, you're wrong here.

As countless other threads on canonrumors have decided, the only people that need lots of DR and landscape photographers but they can use HDR methods ,etc, to make up for that.

Clearly the people who choose Alexa over Canon because of DR need some re-education from the experts in these forums.

Otherwise, this issue pretty much confirms that Canon has (or had) a DR problem with their (current?) previous sensor design.

40
EOS Bodies / First DSLR with 3G/4G?
« on: February 09, 2015, 10:47:39 PM »
Whichever of Canon or Nikon makes the first DSLR with 3G/4G connectivity that allows photographers in the field (for newspapers, etc) to upload either directly to a cloud storage (e.g. Google Drive) or Instagram/twitter (with predefined tags) will make a killing - especially if the other is more than a couple of months without it.

Would easily fit into a 1DX size camera.

41
EOS Bodies / Re: DPReview Interview with Chuck Westfall of Canon USA
« on: February 09, 2015, 02:45:07 AM »
They said it was similar. Not better. If they wanted to rig it, yes, they would rig it to say "better" but they didnt say that.  By traditional measures it is similar to the 5D3 (possible subtext given this new information) but at Low IsO alone we are pushing 2 stops better than the 1DX. Im just putting the puzzle together based on what data we have. But it seems very suggestive

If it was better and you were Canon, wouldn't you just come out and say it?

Why engage in a game of weasel words like politicians do?

42
EOS Bodies / Re: DPReview Interview with Chuck Westfall of Canon USA
« on: February 09, 2015, 02:24:39 AM »
http://www.northlight-images.co.uk/cameras/Canon_5ds.html

Read the post on Sunday Feb 8th (today) regarding DR performance of the 5DS. Mentions pretesting puts it about 1.5 - 2 stops better than the 1DX at low ISO which according to DxO is 11.8 stops....  If this is correct, we are looking at low ISO DR on this 5DS between 13 and 14 stops....  Did things get more interesting for some of you again?

What is better? The shadows?

Or is there actually 1.5 - 2 stops more DR?

If it is the latter than Canon are telling Chuck and others to lie about the camera's performance.

Not necessarily.... Remember, it was said it had similar DR to a 5D3 "by tradititonal measurements".  This is a camera that has clearly been plugged as one specifically tuned for Low ISO.  I asked the question a few days on here "what does that mean?"  Could traditional measure be an overall averaging of performance across the ISO range? If so are the upper ISOs so "bad" by comparison to base that the average is skewed? I really dont know. Im just asking to provoke thought and debate.  But taken at face value its suggesting base ISO coukd see 13-14 stops when it comes to pulling shadows at least

To put the emphasis on "traditional measurements" another way, if it is greater than the 5D3 using non-traditional measurements then that would be suggestive of Canon measuring it in a way that favors them (and I've never seen a vendor viewed positively for doing such) against others - or in other words, Canon rigged the testing.

43
EOS Bodies / Re: DPReview Interview with Chuck Westfall of Canon USA
« on: February 09, 2015, 01:54:02 AM »
http://www.northlight-images.co.uk/cameras/Canon_5ds.html

Read the post on Sunday Feb 8th (today) regarding DR performance of the 5DS. Mentions pretesting puts it about 1.5 - 2 stops better than the 1DX at low ISO which according to DxO is 11.8 stops....  If this is correct, we are looking at low ISO DR on this 5DS between 13 and 14 stops....  Did things get more interesting for some of you again?

What is better? The shadows?

Or is there actually 1.5 - 2 stops more DR?

If it is the latter than Canon are telling Chuck and others to lie about the camera's performance.

44
EOS Bodies / Re: DPReview Interview with Chuck Westfall of Canon USA
« on: February 08, 2015, 11:46:43 PM »
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And why on earth fight so hard, endless, tooth and nail, to try as best as can to make sure Canon doesn't move forward? It's like you are fighting, fighting, doing anything possible to make sure you get less for your money for as long into the future as can possibly be and fighting, fighting as much as possible to prevent any even modest expansion in photographic possibilities.
...

Because to argue otherwise is to admit that what they've got isn't "the best". That's a bit of an ego thing for some.

There's also the issue that a better newer camera makes older cameras worth less than they otherwise might be for resale.

In essence, some people don't want others to have anything better than what they do.

45
The thing is you can get an adapted Sony that will offer a lot more dynamic range and only modestly less resolution for a ton less money.

DR difference = 21%

Resolution difference = 38%

Hmmm....


Well, you can also look at it this way:
21% is the difference in the number of stops. However, because DR is an exponential function, where each stop doubles the dynamic range, a difference of 2 stops essentially means 400% wider DR :).

A resolution increase from 36 to 50 mp, on the other hand, although it gives you 38% more pixels total, is only ~17% (=sqrt(1.38) ) increase in each dimension, not a whole lot.

5Ds 8588 x 5792 @300dpi 28.6 x 19.3
A7R 7360 x 4912 @300dpi 24.5 x 16.4
Diff.  1228 x 880 @300dpi 4.1 x 2.9

For hand held photography, the problem with more megapixels is that you need a faster shutter speed to ensure you get a sharp snap.

For 35mm film, the rule was that 1/mm was usually enough.

For 5D2/3, it was getting more like 1/2xmm (5616 x 3744).

For the 5Ds, it is likely to be 1/3xmm if not 1/4xmm.

(The above is all before you take IS into account.)

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