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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 :)

HDRx questions

J

Jan Reiff

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HDRx questions for further testings:

what´s the difference in RCX between the pairing modes?

at shootig: ok. i can switch from +1 to +6. but what´s the "disadvantage" to select always +6 ?
 
The more f stops you choose the greater the difference in motion character between the a and x track and remember that the x track is a shorter hence darker exposure so you don't want to underexpose it more than necessary for holding the highlights for the least noise in the frame. So the general rule of thumb should be to use the MINIMUM that allows you to hold highlight details that should be protected.
 
ok. have to test the motion in some situations before we start next project. i want this surrealistic effect of hdr.
and what does the setup of the pairing in RCX mean?
 
Pairing is only for the original in-camera HDRx recording which recorded alternate frames. Now HDRx records using a track approach - the A and the X track, the A being the normal exposure and the X being the eXtended range track. So now you won't need to use the pairing and RC-X will handle that all for you with the tracks.

Only use as much HDRx as the scene demands. Going beyond that just wastes bits that could be used to achieve a better looking result.

HDRx doesn't do the stereotypical HDR tonemapped result you often see. "ALL" it does is records more dynamic range and gives it to you. What you do with it is up to you.

Graeme
 
thanks ! will test ...
 
Graeme Nattress said:
...

Only use as much HDRx as the scene demands. Going beyond that just wastes bits that could be used to achieve a better looking result.

...
Graeme
Click to expand...
Graeme, I'm still at sea over how to figure out how much HDRx the scene demands. Is this something that will become intuitive or will there be a way to judge on monitor before choosing?
 
i think i will trust my lightmeter for that and find a good way.
hdrx is cool for situations where i cant´t light areas how i want or wide shots as i posted in the "epic owners" thread - where i tried to achieve an "artificial" scenery.
i think graeme is right when he says , bit less is more for the whole image.
 
would be interesting to know whether hdrx is partly used in the big productions with epic (spiderman, hobbit) ...
 
Funny thing with HDRx is that for the most part, it's not needed. I tried shooting some the other day, outdoors in really bright sunlight, but when I looked at the result, there was no extra detail in the shadows from the normal exposure (which was hard clipped) and all the usable data from the scene was in the X track. So from that, I could see the DR of the scene wasn't greater than than the DR the Epic can capture normally. It's almost like you really need a Jim's Barn Scene to really exercise HDRx or something similar.

Graeme
 
Having never experienced Magic Motion, I wonder if this may add to a scene that would make me want to use HDRx? If so, then it sounds like you would want to us HDRx +6 for those scenes and blend lesser amounts of the X track? Would that still give you the motion look you wanted without using the full +6?
 
Graeme Nattress said:
Funny thing with HDRx is that for the most part, it's not needed. I tried shooting some the other day, outdoors in really bright sunlight, but when I looked at the result, there was no extra detail in the shadows from the normal exposure (which was hard clipped) and all the usable data from the scene was in the X track. So from that, I could see the DR of the scene wasn't greater than than the DR the Epic can capture normally. It's almost like you really need a Jim's Barn Scene to really exercise HDRx or something similar.

Graeme
Click to expand...

Hello Graeme. When HDRx trim will be available I,ll send you some difficult shots where HDRx is necessary.

See you.

Pat
 
Patrick, that's coming soon I think and yes, always love great test shots!

Graeme
 
HDRx works surprisingly well for many situations. And I have a small Shake script that extends the useable options for me (embarrasingly non-nuked yet...)


I look foreward to the next HDRx update!
 
We were just up in toronto shooting for a doc we're doing. Our B-Roll day was shooting out of a car driving through the streets. With no-ND's we were able to hold the bright blue sky AND the shadows and such on the buildings and streets. I kept looking for a reason to switch on HDR-X but we just didn't need it.

Jason
 
Graeme Nattress said:
Pairing is only for the original in-camera HDRx recording which recorded alternate frames. Now HDRx records using a track approach - the A and the X track, the A being the normal exposure and the X being the eXtended range track. So now you won't need to use the pairing and RC-X will handle that all for you with the tracks.

Only use as much HDRx as the scene demands. Going beyond that just wastes bits that could be used to achieve a better looking result.

HDRx doesn't do the stereotypical HDR tonemapped result you often see. "ALL" it does is records more dynamic range and gives it to you. What you do with it is up to you.

Graeme
Click to expand...

Graeme,

please elaborate on the x track extended rage exposure. Lets see how i can best ask this. window 22 subject 4/5.6 if i wanted to actually see outside i'd usually protect that area and fill in the subject to taste. Now, with that said HDRx and no lights for discussion sake would i best use A
to protect the window and X to save subject or A to protect subject and X to reach for the window?

if i made sense, id love to get dialogue from those running tests...
 
A is your normal exposure track, so in your case you'd protect subject and let the window blow. The x track would cover the window and under-expose the subject. The blend would take the best of both exposures so you'd get great exposure on subject and window.

Graeme
 
Exactly like that Jan!

Graeme
 
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