July 31, 2014, 12:18:59 PM

Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.

Messages - heptagon

Pages: 1 ... 7 8 [9] 10
Imagine a D800 with an EF lens mount released by Canon and called 8D. What would you think about it?


Generally speaking, if you want to criticise someone else's results of a scientific method then you do so by doing your own experiments that prove your point. And yes, I'm willing to bet that the method DxO use to generate the raw numbers that goes into those calculations and the method of arriving at the calculations in that table is a lot more scientific than the process of saying "That 0.0 is wrong and because that 0.0 is wrong all other results lack credibility."

A wrong answer on one calls every answer into question.  That is how a engineer views it.  And, I have done plenty of scientific reports for NASA.
The difference is that my reports were checked by a person, not just something kicked out by a formula in a spread sheet.  If the spread sheet calculated one wrong, its not up to me to verify all of them.
Yet the other datapoints LOOK good. Can we verify at least two cameras 5D3 and D800? Getting second opinions on them would be good.

EOS Bodies - For Stills / Re: 5D Mark III and green RAw!!!
« on: August 06, 2012, 09:41:33 AM »
OMG Canons white balance is SO OFF i didn't even notice this in the past to full extent and people complained about a green tint in Nicon pictures...

His chart claims that a D3100 has 0.0 read noise! 
That should give a clue as to accuracy / credability.
Well, that comes from one data point at ISO 3200 which obviously is wrong. Did you already send him an email with the correct value?

EOS Bodies / Re: No DXO results on 1DX until at least September...?
« on: August 02, 2012, 02:55:51 PM »
I have a bit of inside info on this subject, can't really say too much but they're "resolving the issue of how to alter the test so that the 1d X doesn't beat the D4"

If this is the only bit of "inside information" you have, i'd call BS.

EOS Bodies / Re: No DXO results on 1DX until at least September...?
« on: August 02, 2012, 02:33:25 AM »
There's a thread on DXO forums discussing potential problems at DXO Labs. Maybe they already had to let most people go who did the testing due to financial issues. They certainly didn't clarify why there is such a long delay in testing new cameras. This might be some forced vacation for the lower ranks while the upper management sells the company (to Nikon?). So i guess they might return in September stronger than ever or they'd be gone soon.

EOS Bodies - For Stills / Re: Bryan Carnathan's 1D X Review Is Finished
« on: August 01, 2012, 02:19:34 AM »
...I really feel the 5D3 gives more "bang for your buck" vs the 1Dx.
Unless you need 12fps.

EOS Bodies - For Stills / Re: Bryan Carnathan's 1D X Review Is Finished
« on: August 01, 2012, 01:35:48 AM »
Sadly, the 1DX won't focus at F/8 so teleconverters are of limited use for wildlife photography.

Also raw noise of the 1DX isn't especially good compared to the 5D3 after factoring in that they lowered the ISOs.

EOS Bodies / Re: 5d mkiii and no AF at F8
« on: July 31, 2012, 02:37:31 AM »
Unfortunately you cannot use the 70-200 F4 or 300 F4 together with a canon 2x Extender on the new cameras.

Third party extenders may trick the camera into thinking it is a F5.6 lens while focusing but switch to correct data just before taking a picture. And focusing works mostly OK at F8 in good light. So the cameras really are capable of focusing at F8 under good conditions but Canon disabled it because people would complain and didn't give us an option to enable it again.

104F is maximum operating temperature specified. This means full burst operation and it will be OK, the battery gets quite a bit hotter than that in full operation and you just let it sit there. So i wouldn't worry at all... unless you meant degrees celsius.

Pricewatch Deals / Re: Preorder the Canon EOS M
« on: July 23, 2012, 12:48:05 AM »
$200 for an adapter is ridiculous.  It's basically a glorified extension tube.
It's not even glorified. I bet that other manufacturers will deliver at 50$ or less with quality fully satisfying 99% of the users.

EOS Bodies / Re: Canon EOS M Specs
« on: July 22, 2012, 12:06:48 PM »
I'd like to know whether the new EF-M lenses will fit on a DSLR.  The 22mm F2 would be great on a crop body.

Not possible.

The EF-M lenses will not be able to focus on DSLRs due to the difference in distance from the lens to the sensor.

That's why they need an EF/EF-S to EF-M adapter - not because the electronics are different, but to maintain distance to the sensor from the lens.

EF/EF-S lens to EF-M camera simply needs an increased distance to the camera a simple extension tube will suffice.

EF-M lens to EF camera needs a decrased distance to the image plane. This is only possible by introducing additional lenses like in the 1.4x or 2x Extenders. So it is kind of possible but there might be no EF-M lens which you would mount to an EF-camera.

EOS Bodies / Re: Patents - EF 600 f/5.6 DO & 800 f/5.6 DO
« on: July 12, 2012, 05:23:56 PM »
I'm waiting for the EF 600mm f/4L IS Pancake lens.   :P

Personally, I'm holding out for the TS-E 12-1200 f/0.95 L IS pancake....


or the 8-1500 f1.2L H-IS macro with 1.4/2x built in extender

But only if you can use both extenders at the same time without a drop of resolution or contrast on the 80 MPixel APS-C 7D M2. Also everything below 90 degrees of tilt or below 50mm shift is just so lame.

EOS Bodies / Techradar: 12 EV dynamic range for 650D
« on: July 09, 2012, 06:16:42 PM »
I just found this article comparing the Canon 650D, 600D, Nikon D5100 and Sony Alpha 37:

If you look at the lower graph, the dynamic range of the 650D looks a lot like the Nikon counterpart with only a gap of 1EV. However i'd wait for independent confirmation of the results and for techradar to recheck their data because the labelling for the 600D is wrong (pink curve is also labelled 650D) and it seems that the 600D has the JPEG curve in the TIFF result. So we wait for the techradar people to sober up and redo the graphs.

On DxOMark the 600D scored 11EV and the Nikon D5100 scored 13EV at ISO100 screen resolution. If the 12EV figure is true that would be a modest step forward.

Pricewatch Deals / Re: 5D Mark II Body Price Drop at B&H
« on: July 09, 2012, 05:11:12 PM »
Almost as if it's dropped dead.

Pages: 1 ... 7 8 [9] 10