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Messages - dilbert

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1546
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    What is interesting is their sharpness score for various body:
1) 7D: 13P-Mpix
2) 700D: 15P-Mpix
3) 100D: 14P-Mpix

    All 3 are supposed to have the same 18MP sensor... different due to AA filter or it's just a variation between the same sensors or may be due to different image processing done internally by the DIGIC processor?

it is hard to imagine this being a result of DIGIC unless DxO are using JPEGs and I would find that hard to believe. Thus the only option left on the table is the AA filter.

1547
Lenses / Re: Patent: Canon EF 50 f/1.8 IS
« on: July 24, 2013, 06:49:01 AM »
Why IS?

Back in the days of film, the general rule was 1/mm is the minimum speed for the shutter when shooting hand held. This survived into the realm of DSLRs until...

Until sensor resolution screamed past that of film and you now needed 1/(2*mm) - or faster - to get a sharp picture.

IS combats that. How?

Imagine that I've got a 50mm lens and my DSLR's sensor has so many pixels that I need to shoot 1/100 in order to get a sharp picture (no visible blurring from body influenced motion.) A 1 stop IS mechanism brings the minimum speed back to 1/50. A 2 stop IS mechanism brings it down to 1/25. A 3 stop IS mechanism brings it down to 1/13. The IS mechanism also allows me to use a lower ISO, delivering better IQ - if my shot would be 1/50 at ISO 400 but my DSLR means that for my 50mm I need to shoot at 1/100 then I need to double the ISO to 800.

On a human front, IS allows people that cannot hold things steady to take non-blurry photographs. That's not a bad thing.

1549
Canon General / Re: Cannot find CPS points list
« on: July 23, 2013, 09:40:26 AM »
A EOS 30D was relatively speaking more expensive than the 40D or 50D.

Canon CPS membership clearly rewards you for not just having pro-level gear but also current model equipment.

1550
Canon General / Re: Canon Testing a 75+ Megapixel EOS-1 Body? [CR1]
« on: July 23, 2013, 08:19:49 AM »
Buyers aren't purchasing bare silicon.  Maybe Canon consistently sells more because they make superior cameras.  But the DR addicts just DRone on and on and on about the sensor, with no apparent comprehension of the fact that it takes more than a bare silicon sensor to make a picture.

Right. Buyers are buying Canon because it has features like Wifi in the camera.

1551
Canon General / Re: Canon Testing a 75+ Megapixel EOS-1 Body? [CR1]
« on: July 22, 2013, 10:09:15 AM »
Canon would probably like it but they cannot expect all people to buy two camera bodies, one high-res, one high-fps.

Why not?  For years, we had the 1D and the 1Ds lines. The 1D X price at launch was between the 1DIV an the 1DsIII launch prices. If they do have one body with both high-res and high fps, what will they charge for it?  Likely well over $10K, and I doubt Canon will leave that large a gap between the 5-series and the 1-series.

Well it is highly unlikely that there will be two 1D named products again.
Why?
Product disamibiguation.

1552
Canon General / Re: Canon Testing a 75+ Megapixel EOS-1 Body? [CR1]
« on: July 21, 2013, 11:09:53 PM »
Did they say if it was Bayer or something new, Foveon-ish?

1553
But I wouldn't be upgrading from a 5D3, rather a 5D2.

1554
Lenses / Re: Dxo tests canon/nikon/sony 500mm's
« on: July 15, 2013, 10:47:57 PM »
...
They should rename their Overall Scores to a Camera Basic Score and a Lens Basic Score, so we could abbreviate them for what they really are: BS.  Actually, that's probably giving them too much credit, because real Bovine Scat makes good fertilizer, whereas DxOMark's BS has no real-world utility.

Your assertions of DxO publishing BS are just as BS as their results because you don't know how they calculate their "lens score" and thus you have to make up reasons as to why it is so. Yes, you're compounding the BS by stating that they're publishing BS. Just don't buy into it.

1555
Lenses / Re: Dxo tests canon/nikon/sony 500mm's
« on: July 15, 2013, 09:32:49 AM »
If you look at the test results they are measuring the combination of lens and body.  Hard to do otherwise.  Makes comparison between manufactures difficult and less than meaningful.

Yes, and sorry, but I think you are missing the point.  For every measurement, all generated with a body attached, the Canon lens comes out on top, in some cases by a significant margin.  Yet, the Score is a tie.  So...the score is fabricated, pulled from their nether orifices, etc.

If you go over to photozone.de's page, they'll quite clearly state that the measurements (or scores) from one camera system (make + sensor size) cannot be compared with another. Given this I can't see why the same wouldn't be true for DxO. What does that mean? That you cannot compare a score of 25 for the Nikon lens with a score of 25 for the Canon or 22 for the Sony lens.

To be able to compare each lens properly would require each lens being mounted on the same camera.

How do they calculate their lens score? Would love to know but I'm pretty sure that it is corporate secret. For the Nikon one to be so high must mean that the readings are somehow weight on the sensor (e.g pixel size.)

1556
Camera Body Gallery / Re: This sensor is holy
« on: July 15, 2013, 01:27:17 AM »
but i'm an atheist....

what should i do?

Same as what I do (I'm also an atheist) - when you see signs of religion in unexpected places (and people don't know that you're atheist) scream out "oh my god, look - it's a sign from God!" and then make fun of all the people that take you seriously...

1557
Camera Body Gallery / Re: This sensor is holy
« on: July 13, 2013, 12:16:50 PM »
for those that can't see it (presumably because your monitor is not well calibrated or your monitor is just plain crap), I've put a thin red line through the middle of the vertical and horizontal parts of the cross in the original image that are darker than the rest of the noise in the image.

1558
Camera Body Gallery / This sensor is holy
« on: July 13, 2013, 09:13:28 AM »
In a shot that the camera got to choose the metering, I noticed a pattern in the noise on the bottom edge: a cross. I can only presume to mean that this camera or sensor has been blessed!

1559
Lenses / Re: EF-M 11-22 f/4-5.6 IS STM Not Coming to the USA
« on: July 13, 2013, 12:53:28 AM »
So if the dumping of the EOS-M was at cost because units were failing to sell then Canon USA would probably have little confidence in the camera selling and thus accessories (i.e lenses) selling well. Even after dumping the camera, they would expect people to have it but not see it as a long term friend.

It may be that Canon USA have formed the opinion that people who buy Canon in the USA do so because of DSLRs (and possibly compacts) but for those interested in MILC, they've already bought into NEX or m4/3 and thus because Canon is so far behind, won't buy into the Canon system (in the USA.)

1560
Lenses / Re: New Tilt-Shifts in 2014, Other EF Lenses in 2013 [CR2]
« on: July 11, 2013, 02:20:57 PM »
.
I'm suspicioning a 35mm.

I don't believe Canon dances much to the tune of competitors -- BUT, I suspect the Sigma 35mm is taking a pound of flesh Canon doesn't want to be giving up.

There is no way that Canon could design, engineer and deliver a new lens in the time since the Sigma 35mm was released. If there is a new 35mm coming from Canon then it has been in progress for years already.

Replacing the 50/1.4 would address a lot of complaints/issues/concerns.

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