Dynamic Range -- what it is, what it's good for, and how much you 'need'

Started Oct 17, 2011 | Discussions thread
Great Bustard
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Re: Some of those links were interesting
In reply to odl, Oct 19, 2011

odl wrote:

D7000 has done very well with DR.

Understatement of the year.

Not really, cmon now be honest, how many buyers of the D7000 will ever process the files and learn the potential of the camera? I would even suggest that 50% might be high.

I would suggerst that even 5% would be high. Same as the number of people who make full use of 16 MP over 8 MP.

Interesting how Sensor Performance seems to be mostly related to current tech than sensor size or MP.

Yes! That's the key point that I've been trying to make!

Well that is generally your add on to your MP point.

But it is often missed.

The rumored Nikon D800 will feature a FF version of the Sony Exmor sensor in the D7000, and thus be 36 MP. I don't see it going well for Canon.

No, Nikon is making everyone out there look kinda bad. Even sony, but sony does the "we are 85% of the image quality for 50% of the price

Nikon is using a Sony sensor in their D7000, but, yes, you are correct, Nikon is kicking some serious butt right now, although there is certainly something to be said for better bang-for-the buck with other systems (why do you think I have a 5D rather than D3s?).

That said, Canon does make the best pixels in the business, but their sensors are limited by the ADC (Analog to Digital Converter). What this amounts to is that Canon sensors will lag far behind at lower ISOs, but catch up and surpass at the higher ISOs. So, what we may well see is the 1Dx delivering higher IQ at high ISO, but substantially lagging at lower ISOs.

Interesting, i dont know much about that.

I was corrected upthread that Nikon makes the best pixels in the business, but I suspect that correction was based on Nikon's superior QE which likely has to do with the microlenses more than the pixels.

That said, the sensor tech in the 1Dx is new (as opposed to merely scaling down and making refinements on previous tech, as Canon has done for several years, now). So, it may actually be better than the Sony tech all the way through (but I woudn't bet on it).

The lower pixel count may simply be because they needed a lower pixel count to get the frame rate they wanted (ala Nikon D3) or because 18 MP was the most they could produce with the current tech.

Could be, but as a follower I imagine they noticed the success of the D700, D3 and D3s and hopefully they are gunning for better image quality, less banding etc.

One would hope, but this hope is being placed on a company that released their premiere sports camera with faulty AF (1D3 AF fiasco) right when Nikon released their D3.

One big challenge for Canon is QE (Quantum Efficiency -- the proportion of light falling on the sensor that gets recorded by the sensor). The 5D2 has a QE of 33% compared to the 57% of the D3s -- that's almost a full stop advantage for Nikon.

I wonder why, well actually i wonder what secret Nikon has that improves the Sony sensors to even above what Sony can achieve.

I think it's the microlens design.

However, Canon has claimed that they finally were able to make gapless microlenses (which Nikon has had for some time now), and, hopefully, that will close that huge QE advanatage that Nikon has.

I cant wait for the image samples

In my opinion, the initial photos released for new cameras are often horrid, regardless of the system. I've often wondered why the companies would release such self-harming examples.

We shall see. I'm actually prepared to be fairly disappointed by Canon's latest and greatest -- see Bob's post on the matter:

http://forums.dpreview.com/forums/read.asp?forum=1032&message=39619535

That was a lot of reading between the lines. I will wait for the image samples for comparison.

In the end, of course, it's about the photo. However, as I said, the initial photos from new cameras are often disappointing compared to what the system can actually deliver. We shall see!

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