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Digital BW, The Print

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Message

Re: Multiple Bracket Exposures with High Bit HDR and CS2

2006-03-24 by digikdm

Thanks a lot John!



--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "john dean" 
<deanwork2003@...> wrote:
>
> Kevin
> 
> You can do it either way. However, when you MERGE TO HDR (high 
dynamic
> range- 32 bit) the raw file must be completely raw and unprocessed 
16
> bit data without adjustments. The other thing to remember is that
> these exposures must not be more than 1 stop apart in exposure
> otherwise you will begin to experience banding artifacts.
> 
> I leaned this procedure from Martin Evenings really good book
> Photoshop CS2 for Photographers. Later I read more about it in Bruce
> Frasier's outstanding Real World Camera Raw CS2, which I think
> everyone who owns a digital camera should have. It's cheap and
> extremely well written like all his books. It really helps you
> understand the really useful capabilites of camera raw and do the
> least damage to your files.
> 
> If you just want a straight forward description of what Photoshop's
> HDR capability is all about here is a link that describes it.
> 
> http://www.adobeevangelists.com/photoshop/index.html 
> 
> If you search Photoshop's own data base through the program, typing 
in
> HDR you will find essentially this same info.
> 
> I think this HDR stuff is the most under rated aspect of CS2 along
> with the new smarter noise reduction capability and spot healing
> brush. If you are shooting digital capture and are not working in 
CS2
> you are missing a lot in my opinion. Of course it's expensive and we
> can't share it any longer with our loved ones ;-( . 
> 
> John
> 
> 
> 
> 
> 
> 
> 
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "digikdm"
> <monroekd@> wrote:
> >
> > John,
> > Could you elaborate on your technique for "droping" your 
bracketed 
> > exposures in to PS-CS2 with instant registration and combine them 
> > into one image. Is that done before or after the raw conversion?
> > Thanks
> > kevin monroe
> > 
> > --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "john dean" 
> > <deanwork2003@> wrote:
> > >
> > > One of the very interesting developments in digital raw workflow
> > > centers around the ability to shoot 3 bracketed frames - over, 
> > under,
> > > and in the middle, drop them into PS CS2 with instant 
registration 
> > and
> > > combine them instantly as one very smooth entity. It's a  major
> > > improvement in dynamic range over the one frame 35mm camera or 
any 
> > ccd
> > > scanner, certainly including Imacon. That three frame 
registration 
> > can
> > > happen in about the time it would take to power up your scanner 
much
> > > less have your film processed. However we aren't talking people 
> > photo
> > > though, its got to be static right now.
> > > 
> > > john
> > > 
> > > 
> > > 
> > > > smaller pictures and stitch them together. That way, you 
retain 
> > the
> > > > advantages of the quick turnaround, yet can still get 
gargantuan
> > > images with
> > > > loads of detail. Modern stitching software, like PTGui, has 
gotten
> > > really
> > > > good, and with some practice you can get really quick at it.
> > > Shooting a 4x4
> > > > array can realistically give you at least the equivalent of a 
2x2 
> > sized
> > > > sensor, maybe even 3x3, after you factor out the overlap, and 
the
> > > > interpolation filtering. So even a cheap eight megapixel 
camera 
> > like
> > > a Rebel
> > > > XT should give you more than enough resolution.
> > > > 
> > > > --
> > > > 
> > > > Ciao,               Paul D. DeRocco
> > > > Paul                mailto:pderocco@
> > > >
> > >
> >
>

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