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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

HDR Mode...

NICE. I'm looking forward to this.

It seems you are hinting that it is taking place in camera - that is, generating results directly rather than after post processing. Is this true?

Either way, I'd like the option to get the source frames out to do my own post processing pipeline, please!

And either way, I'd love to see some pretty sick and wide bracketing with fine control.

I started messing with HDR with my D90, and got the D300S because it would allow for 9 not 3 shot brackets.

But I was dismayed to discover that there was a maximum of 1 stop between shots - so I could get at most 8 stops/shots of additional lattitude. And if I wanted a 4 stop boost, I had to shoot 5 shots not just 3 like my D90.

Ideally, bracketing would allow me to shoot a ridiculously wide bracket, graduated as finely or coarsely as I'd like. Why huge range of bracketing? Shooting sunsets/sunrises, where the lighting changes massively.

In addition to that, it'd be nice if you could animate an exposure compensation value, initiated by a GPIB or other trigger. Sun has hit the horizon? Start animating the exposures ever so slowly longer.

Another solution would be a verrrrry slow motor on the iris, but that changes other characteristics of the shot. I like varying exposure times.

I can then animate those in post on the resultant HDR to get the exposure I want nailed to change over the duration of the shot.

-mike
 
Brian Harbauer said:
My guess as to their clever approach would be to expose a pattern of photosites a little less (or longer) than others with the green photosites. After all, there are more of them. Essentially it would be bracketing with photosites, not with frames - but all at once. Then all information can be gained with clever debayering.

This is just speculation - but I think that's how I would approach it :)
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Interesting. I wonder if it's possible to read out some pixels before others. I could see some aliasing arising since you would essentially be reducing the RED to two 5Ds shooting different shutter speeds simultaneously. :D

I don't think you would gain any advantage though using that system. You would still have ghosting since you would need to shoot different shutter speeds. But you would also be losing resolution. Maybe you're right though that there is some clever de-mosaic work that could be done.
 
Andrew Walker said:
This should be a very interesting feature. I'm assuming that it will just be info written to the meta data while using the timelapse function.
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Except he said motion as well as stills :-).

All HDR means is high dynamic range. So, it could be an electronically cool way of taking 12 stops and making it...15-20 stops. That would be insane. There's a huge amount of potential here to go where no photochemical process has gone before :-)
 
Gavin Greenwalt said:
You would still have ghosting since you would need to shoot different shutter speeds.
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My guess is a post process to combine a series of images like Gavin suggested. There are some pretty astonishing algorithms like what you can get in furnace/nuke.

F_Align, and F_Correlate do some amazing processing on images shot with different takes. I would think you could get some clean and predictable results with images shot milliseconds apart.

Descriptions here: LINK>> Furnace Plugins
 
This is really exciting, this is the first time I can remember this being done with raw motion graphics with the camera directly.

Thinking about how it's going to be done is pretty exciting because there are so many "But how!?" questions regarding it right now.

Personally, I can think of two options off the top of my head, I am thinking that maybe it's going to be done with software, taking the raw images and doing a high and low exposure set, and then combining that with some kind of tone-mapping, so the high exposure for the dark area details, and the low exposure for bright area details, and then using some of Graeme's Voodoo to utilize the detail in new way.

OR, they are using the 120 frame mode, tagging each frame with exposure metadata, and then recombing 24 frames from the 120 source file, with each process and exposed differently.

But there has been discussion about this introducing ghosting artifacts, so if they do do something along these lines, I imagine there might be some kind of softness that you'd have to deal with, unless they were doing some kind of "Super-resolution" processing as well.
 
This would pretty much revolutionize what I currently shoot with stills, and it is way beyond what I ever expected I'd be able to do with motion. HDR isn't always a viable alternative to big lights, but in some cases it will more than make up for their absence.
 
Peter Franzen said:
This would pretty much revolutionize what I currently shoot with stills, and it is way beyond what I ever expected I'd be able to do with motion. HDR isn't always a viable alternative to big lights, but in some cases it will more than make up for their absence.
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HDR modes and flexibility on epic/scarlet are extremely powerful and flexible.

Timelapse mode will be even more so.
 
:001_tt1: If its sounds to god to be true, its probely just red doing there thing!

This sounds amazing!! I want to take a guess to! for fun. I dont know to much of how this works exactly but here it goes.

My guess is the hdr feature is limited to say 30fps. Then you could have the processing power for the camera to "bracket" record 3 different shutterspeeds in a row. Then in post the software could combine this to a hdr sequence.

In still you use the shutterspeed for bracketing but a slow shutter will take some extra time. Would it matter if you used the f-stop instead? Other wise you could open up the apeture and the hdr feature protects the highlight areas by record in higher shutterspeeds.
 
Everyone has a guess... :-)

Jim
 
Can we come up with a new name with it. The Flicktards have ruined "HDR" and turned it into visual throw-up. I can't say how much I hate current "HDR" "art" It is what I consider to be the worst thing about modern photography. Conceptually, artistically, and technically.

That being said, any extended dynamic range is welcome. Just don't ask me to pack all that data into a cartoonish 8bit jpeg and call it HDR ART.
 
Mike Prevette said:
Can we come up with a new name with it. The Flicktards have ruined "HDR" and turned it into visual throw-up. I can't say how much I hate current "HDR" "art" It is what I consider to be the worst thing about modern photography. Conceptually, artistically, and technically.

That being said, any extended dynamic range is welcome. Just don't ask me to pack all that data into a cartoonish 8bit jpeg and call it HDR ART.
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I couldn't agree more the word HDR now carries a bad rep. Thanks a lot 16 year old taking pics of your crappy car and trying to make it look cooler...
 
I have been waiting for this feature ever since I picked up a camera and started filming. The bar keeps getting raised!

Can't wait for the examples!
 
Just to add my guess to the list:

HDR mode would shoot an increased number of frames and use exposure information to combine them into an HDR image...

So 24fps final output - the camera actually exposes 48 times a second. 24 of them at, say, the actual shutter speed and ISO you wanted, which might be 1/48 and ISO 320.

It would then automatically utilize the other half a second of "closed shutter" time (as long as the read-reset doesn't take too much time) at varied shutter/ISO settings to gather "bracketed" information to build an HDR frame out of. Possibly finishing in camera, possibly in a post tool.

I'm tired, but I think if the electronics were fast enough, something like this would be possible.
 
Indie Rentals said:
Just to add my guess to the list:

HDR mode would shoot an increased number of frames and use exposure information to combine them into an HDR image...

So 24fps final output - the camera actually exposes 48 times a second. 24 of them at, say, the actual shutter speed and ISO you wanted, which might be 1/48 and ISO 320.

It would then automatically utilize the other half a second of "closed shutter" time (as long as the read-reset doesn't take too much time) at varied shutter/ISO settings to gather "bracketed" information to build an HDR frame out of. Possibly finishing in camera, possibly in a post tool.

I'm tired, but I think if the electronics were fast enough, something like this would be possible.
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That would be one way to do it. :-)

Jim
 
It seems that every time I look you've somehow crammed a new feature in! Tell the truth Jim, you're actually building a Transformer....
 
Jannard said:
That would be one way to do it. :-)

Jim
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Yes, there is another way without the motion shift between slow and fast shutter frames. Let's see if it is the same method I am thinking of :)

I look forward to it.
 
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