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Query FailedOverlord
Tuesday, September 22, 2009

@Sean "There are two important aspects to HDR - more precision and tone-mapping"

Well not precisely, Dynamic range is defined as the range between the darkest non black color and the brightest non white color detectable, on my D200 it's about 9 stops, increasing precision does increase the usable dynamic range slightly, especially in the dark areas, but it's still in the same general range.

and tone mapping is the process of transforming light in an HDR image to fit a LDR image, it's has nothing else to do with HDR, in fact you could tonemap a HDR to HDR and LDR to LDR.
But you don't have to.

So basically HDR is when you get an dynamic range much closer to that of our eyes, about 15-20 stops or so would do.

So i wouldn't say that the F200EXR is especially that much HDR, but it is a step in the right direction, i mean i could probably do most of the compensation in the above picture if i shoot raw and then fiddle with it a bit, but that takes a lot of work.

And about 8bit, well it's ok for normal monitors since anything more gradual than that is not possible to detect with our eyes, but that is assuming a maximum dynamic range of about 1:500(9 stops) like all lcd monitors have, if you go way beyond that, you will need HDR.

Wes
Tuesday, September 22, 2009

You might be interested in this work:

http://graphics.stanford.edu/projects/camera-2.0/

Where the group is "building an open-source camera platform that runs Linux, is fully programmable (including its digital signal processor) and connected to the Internet, and accommodates SLR lenses and SLR-quality sensors".

The sensor is from the N95 cell phone, so I would guess its not an HDR sensor. Still, its pretty cool work.

Mathias
Monday, September 21, 2009

@Sean If you would reduce the shutter time, there would be not much detail in the walls on the left and right. There is less detail on the HDR picture, that should be due to a sub optimal tone mapping. So all I can hope for is canon releases a camera with a hdr sensor, so with CHDK I can save raw images with HDR.

Sean Barrett
Monday, September 21, 2009

There are two important aspects to HDR - more precision and tone-mapping.

The dynamic range of gamma-corrected 8-bit is already pretty wide, just not very precise. It would be interesting to see what one would get with the regular camera on the left with a faster shutter time (to capture the dynamic range) and then tone-mapped to match the right. Presumably it would have hideous banding, but who knows.

Overlord
Monday, September 21, 2009

I would like to see how good Single exposure HDR could get on a high end DSLR, it would make taking HDR timelapse a bit easier, and not to mention remove the colored fringes you might get on things that move in the wind.

Nick
Sunday, September 20, 2009

I do HDR the "hard" way, but am intrigued by a camera with a better sensor! There's an in depth technical review here -

http://www.dpreview.com/reviews/FujifilmF200EXR/

I use things like Photomatix, Enfuse, and Hugin to merge multiple exposures, and wouldn't mind being able to skip that step!

http://meshula.net/photos/2009SummerTrip/index.html

David
Friday, September 18, 2009

That is one incredible idea. Imagine a movie theatre with images on every surface!!!

GoldenCloud
Tuesday, September 15, 2009

Very nice, I like it. I downloaded very one.
wide landscape expecting...


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