kr hdr

chaza01 · 08-20-2011, 01:47 PM

Well I was in France recently and saw a Church in Caen. My first thought was lets try out some HDR- i didnt properly take 3 raw files with +1,0,-1, in fact i just ended up take 3 shots with the same exposure. This I did not realize until I was sitting down on the other side of the english channel. So I have an idea, which I would like some fellow pentaxians to knock down as much as possible: Why not take one Raw file, adjust its exposure, and save it to 3 different files, each with different exposure, and then merge to give HDR? Is that possible, or am I missing something fundamental here? Feedback would be much appreciated.

GabrielFFontes · 08-20-2011, 02:26 PM

There is actually no need for that.
You could use a program with your raw file to create one "1-raw hdr".

**boriscleto** · 08-20-2011, 02:27 PM

Let me google that for you

**mattt** · 08-20-2011, 03:39 PM

I've done it.. see here...St.Andrews @ Dusk - a set on Flickr

its not true HDR by the purists because its a stacking of jpg instead of RAW or TIFF, but all the same, its has a great result.

Steps I used

Take SOOC exposure in RAW and develop a (+) and (-) exposure of suitable EV differenct

Import "as layers" into GIMP

Set SOOC as background,
Mask (-) with grey
apply mask
Invert(+) and Mask with grey
apply mask and Invert

Squish it all down and roberts your fathers brother.

Cheers

dragra · 08-27-2011, 12:56 AM

In camera HDR is probably one of the most underestimated features of K-r. There is no such thing as "true" HDR, it's important that different exposures are stacked together. In the end stacking JPGs with different exposures makes better results than starting off with a single RAW, developing it in different levels and then stack it.

K-r takes full advantage of sheer speed it has during the HDR shoot. Now it is even possible to do handheld HDR without tripod. This comes very handy and works truly great. Yet you should consider that moving subjects will always be a problem, even if the pictures are all taken withing a fraction of a second.

Cheers,
D.

08-20-2011, 01:47 PM	#1
chaza01 Inactive Account Join Date: Jun 2011 Location: LONDON Posts: 136	kr hdr Well I was in France recently and saw a Church in Caen. My first thought was lets try out some HDR- i didnt properly take 3 raw files with +1,0,-1, in fact i just ended up take 3 shots with the same exposure. This I did not realize until I was sitting down on the other side of the english channel. So I have an idea, which I would like some fellow pentaxians to knock down as much as possible: Why not take one Raw file, adjust its exposure, and save it to 3 different files, each with different exposure, and then merge to give HDR? Is that possible, or am I missing something fundamental here? Feedback would be much appreciated.

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08-20-2011, 02:26 PM	#2
GabrielFFontes Veteran Member Join Date: Jul 2011 Location: Rio de Janeiro, Brazil Posts: 647	There is actually no need for that. You could use a program with your raw file to create one "1-raw hdr".

08-20-2011, 02:27 PM	#3
boriscleto Loyal Site Supporter Join Date: Dec 2009 Location: North Syracuse, NY Photos: Gallery Posts: 16,475	Let me google that for you

08-20-2011, 03:39 PM	#4
mattt Site Supporter Join Date: Feb 2011 Location: Niagara Photos: Gallery \| Albums Posts: 3,907	I've done it.. see here...St.Andrews @ Dusk - a set on Flickr its not true HDR by the purists because its a stacking of jpg instead of RAW or TIFF, but all the same, its has a great result. Steps I used Take SOOC exposure in RAW and develop a (+) and (-) exposure of suitable EV differenct Import "as layers" into GIMP Set SOOC as background, Mask (-) with grey apply mask Invert(+) and Mask with grey apply mask and Invert Squish it all down and roberts your fathers brother. Cheers

08-27-2011, 12:56 AM	#5
dragra Senior Member Join Date: Dec 2010 Location: Ljubljana Photos: Albums Posts: 238	In camera HDR is probably one of the most underestimated features of K-r. There is no such thing as "true" HDR, it's important that different exposures are stacked together. In the end stacking JPGs with different exposures makes better results than starting off with a single RAW, developing it in different levels and then stack it. K-r takes full advantage of sheer speed it has during the HDR shoot. Now it is even possible to do handheld HDR without tripod. This comes very handy and works truly great. Yet you should consider that moving subjects will always be a problem, even if the pictures are all taken withing a fraction of a second. Cheers, D.