DOF and Cropping take 2

Started 7 months ago | Discussions thread
Ian Stuart Forsyth
Senior MemberPosts: 1,790Gear list
Like?
Sensor size cropping & DR
In reply to moving_comfort, 7 months ago

moving_comfort wrote:

awaldram wrote:

So your now agreeing a crop from a larger is identical to the the smaller sensor - hallelujah.

and I see your also changing your mind

He in fact has changed his mind about nothing, either here or in the earlier thread. Neither have I, nor James, nor anyone who understands this stuff. We've been exactly consistent. What seems to be happening is you yourself have moments of clarity in which you understand what's being written or demonstrated and answer accordingly to some post, and then lose it the next. Too bad you can't be consistent with that clarity.

Total light gathering is irrelevant , per pixel light gathering determines noise.

No - total light gathering over the sensor area determines image noise.

The d800 with the same pixel density as 16 mp aps-c sensor unsurprisingly has the same noise and dnr.

It absolutely does not, at the image level. If what you were saying had any bearing on reality, a P&S made from the same sensor wafer as the K5 could be said to have "the same noise and dnr as the K-5", which it of course would not. Sensor area determines amount of total light captured which ultimately determines noise and contributes directly to DR.

.

-- hide signature --

Here are a few of my favorite things...
---> http://www.flickr.com/photos/95095968@N00/sets/72157626171532197/

hey MC

As you can see from the chart that the D800 take a hit to it DR when used in DX crop any guess as to why

Also if you look at the graph you would also see that the D800 has 10.58PDR at iso 200 when compared to itself shooting in DX at 100 it has 10.58PDR I wonder how this happens ?

I cannot figure it out, they must put a DR limiter in the with the raw data as to cut it DR in DX

http://home.comcast.net/~NikonD70/Charts/PDR.htm#D7000,D800(DX),D800

-- hide signature --

The Camera is only a tool, photography is deciding how to use it.
The hardest part about capturing wildlife is not the photographing portion; it’s getting them to sign a model release

 Ian Stuart Forsyth's gear list:Ian Stuart Forsyth's gear list
Pentax *ist DS Pentax K10D Pentax K20D Pentax K-7 Pentax K-5 +19 more
Reply   Reply with quote   Complain
Post (hide subjects)Posted by
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow