December 18, 2014, 07:02:55 PM

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Messages - dilbert

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EOS Bodies / Re: High Megapixel Camera Coming in 2015 [CR3]
« on: Today at 03:34:58 AM »
Some one earlier wrote:
No AA filter = not positive for anything but the company making the camera (AA filters are very expensive optical devices).  Removing it does not help image quality, and it does hurt image quality of still images.

Do you use cameras with and without the AA filters?  I shoot the D800, 5DIII, D800E, D810 and the D7100.  In ALL cases, for my most detailed landscape work at low ISO, the cameras without the AA filter produce superior IQ Images to ones that have the AA filter and I have the large prints (3 feet by 2 feet average size) to prove it.

Sorry Bruce, your real life experience doesn't count. There have been various arguments on this topic and the CR experts have all agreed that no AA filter produces a worse image. Your real life experience is not going to trump the opinions of the CR experts.

EOS Bodies / Re: High Megapixel Camera Coming in 2015 [CR3]
« on: Today at 12:12:54 AM »
Some people are excited, some are denouncing this. One thing is for certain: this is a huge buzz that will not just affect Canon shooters but shake up the market for other brands as well. Studio/landscape shooters will be flocking to this 50MP body if all goes well, and suddenly Nikon and Sony will have to have something like this.

"if all goes well".

If by that you mean "Canon delivers a FF sensor with competitive IQ." (better DR, no pattern noise)

Consider that Sony is also expected to deliver a FF sensor in the 40-50MP range early in 2015.

If I had to choose between (say) a 46MP Sony Exmor based camera that was just as good as the Nikon D810/610 or a 50MP Canon sensor based camera that had the same IQ as the 7D2, I'd still go for the non-Canon camera because simply having more MP doesn't give me a better quality picture.

And in 6 months time, maybe that will be the debate here:

"Canon has more MP, better AF!"
"Sony has more DR, better IQ!"

... but the problem for lots of us will be that a FF sensor that performs the same as the 7D2 sensor won't represent anything new or better: there will be just more of it.

EOS Bodies / Re: High Megapixel Camera Coming in 2015 [CR3]
« on: December 17, 2014, 08:34:40 AM »
Landscape AND Studio body?

It would have the same pixel density as the 7D2/70D and thus places the same requirements on holding the camera still, lens quality in the centre, etc.

Are those two cameras landscape/studio bodies?

EOS Bodies / Re: High Megapixel Camera Coming in 2015 [CR3]
« on: December 17, 2014, 08:33:08 AM »
If it is a Canon sensor then my bet is that the IQ will be about the same as 7D2/70D and that the graphs and measurements from DxO will be about the same for all three.

EOS Bodies / Re: High Megapixel Camera Coming in 2015 [CR3]
« on: December 17, 2014, 08:10:24 AM »
More megapixels is only part of the problem.

Better megapixels is the more significant problem that Canon faces.

If it simple scales up any of its current APS-C sensors to full frame then it won't address the megapixel quality problem.

On the other hand if it gets a 46MP sensor from Sony, well, all bets are off....

Canon General / Re: Canon USA Addresses the Gray Market
« on: December 17, 2014, 06:48:14 AM »
Hello, Canon USA? Waaake up!!

There is no compelling reason to buy what you import over the gray market imports.

Canon General / Re: Canon USA Addresses the Gray Market
« on: December 16, 2014, 11:39:51 PM »
I feel so foolish now for having paid £1800 for a 5D3 when it was being sold locally for just £2999.99 without running the risk of receiving an incorrect power cord   :-\

That power cord must be made of pure gold to be worth £1199

Canon General / Re: Digital Camera was into decline stage
« on: December 16, 2014, 10:12:28 PM »
Yup... for many people that own(ed) compact cameras, buying a new camera is not interesting however buying a new phone that is a good digital camera is.

Canon General / Re: Canon USA Addresses the Gray Market
« on: December 16, 2014, 09:56:44 PM »
Customers should also be aware that Gray Market Products may not be eligible for:

• Coverage under a U.S. warranty;

The US warranty is only valid for a single year. People keep cameras for multiple years and problems generally don't develop in the first year of ownership.

If Canon wants to encourage more people to "buy Canon USA" then maybe Canon USA should offer a 2 or even 3 year warranty.

Then there would actually be incentive to "buy local."

If Canon USA wants to address the Gray Market then maybe Canon USA should come up with an offering or product enhancement that people will see actual value in. Thus far, Canon USA has failed to do that and this "reminder" about Gray Market cameras is an excellent example of how Canon USA is failing to provide added value.

EOS Bodies / Re: Sony Sensors Coming to Canon DSLRs? [CR1]
« on: December 16, 2014, 09:01:36 AM »
One shouldn't expect Dual Pixel sensors manufactured by Sony. No way.

If Canon handed back to Sony a variation of Sony's design with Canon's DPAF then why not?

EOS Bodies / Re: Sony Sensors Coming to Canon DSLRs? [CR1]
« on: December 16, 2014, 09:00:18 AM »
Would Canon stop manufacturing sensors because they no longer used them in DSLRs?

Nowhere has Canon said that.

Does Canon have products that use sensors aside from DSLRs? Absolutely.

Did Canon say that they would use the best product available for their DSLRs? Yes.

The businessman from Canon that said that Canon would use the best sensors in their DSLRs said exactly the right thing.

Thus the gauntlet is thrown down at the feet of the Canon sensor division to deliver a sensor that performs as well as Sony's. if that part of Canon fails to deliver and the DSLR divison of Canon chooses to use a Sony sensor, who can fault Canon?

FWIW, it is also possible that Canon may deliver to Sony their own design (or a variation of Sony's) as have Nikon that allows the Nikon DSLRs to outperform the Sony ones when it comes to IQ.

EOS Bodies / Re: Sony Sensors Coming to Canon DSLRs? [CR1]
« on: December 15, 2014, 09:34:12 PM »
If Canon did this, DXO would implode from having no one left to pick on.

- A

They might have to start testing cameras rather than sensors.

Why would DxO want to test cameras? All they care about is sensor performance so that their software works well.

If you want to understand crop effect and how it works with depth of field, etc, get a lens that has a tripod mount (one of the big white ones), focus it with either an APS-C or FF camera on a subject, take your picture, change the camera over from APS-C to FF or FF to APS-C (do not move the lens/tripod) and take another photograph focused on exactly the same subject.

The best camera combination to do this with is a 20D/30D (APS-C) and 5D2/5D3 (FF).


Try metering side by side and see if what you say is true. I am getting a 1/3 to 2/3 stop light advantage with the 5D II and 1D IV.

 I've had a t1i, 7D, 5DII and 5DIII and if I take the same shot at exactly the same aperture, SS and ISO they will all be different by 1/3-2/3 stop.  Nothing to do with crop and everything to do with how the amplification in-camera is done and how they mark the ISO values.  In fact 7D was 2/3 stop darker than t1i at all ISO's above 100.  Ti1 ISO 100 was not a full stop darker than at 200 - only 1/3 stop, so that was a little weird. 

Maybe I'm just cynical, but I figured Canon did that so that when tested at a particular ISO the 7D would look better than the rebels and previous  15MP 'older' and people would think the sensor was better (I think that actually happened too).  Of course no-one noticed that the testers had to use a lower SS by 1/3-2/3 stop.   OF course if you actually shot at the same exposure the results were essentially identical.

If you look on DxO's website (and also on then you will find the truth about ISO sensitivity and numbers for each camera that they test. Very rarely does "ISO 100" on your camera actually measure up to what ISO 100 should be.

If you're confused about the crop effect, maybe this will help.

If you put a 300mm lens on a 20D (8MP) then the image you take is going to be almost exactly the same as if you put that lens on a 5D Mark II (21MP) or 5D Mark III (22MP), had the same subject center of frame and cropped the resulting image.

This will even be true for depth of field.

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