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

Started Oct 17, 2011 | Discussions thread
odl
odl
Senior MemberPosts: 1,684
Like?
Re: Some of those links were interesting
In reply to Great Bustard, Oct 19, 2011

Great Bustard wrote:

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.

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.

Also an interesting note just for you and me GB, the choice by Canon to keep the MP at 18 for their new body, lets see how that compares as they have chosen a modest MP increase on average, or even a MP decrease compared to their 5DM11.

See my reply "Let's put it all together" to FrankyM above:

http://forums.dpreview.com/forums/read.asp?forum=1022&message=39618352

It directly addresses those points.

Based on my believe that either no MP increase or a modest MP increase should yield faster gains for IQ (ala D700, D3, D3s) this should be a superb camera for IQ relating to noise and DR... But lets see

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

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.

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 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.

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

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.

Ab

-- hide signature --

alatchinphotography.com

“Imagination is more important than knowledge. For
knowledge is limited to all we now know and
understand, while imagination embraces the entire
world, and all there ever will be to know and
understand.” - Albert Einstein

Reply   Reply with quote   Complain
Post (hide subjects)Posted by
MathNew
You.New
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow