A low contrast image will have a narrow histogram. If you want to increase the contrast in post, you can use the levels controls in photoshop to increase contrast. It doesnt require any camera hardware changes.
-- J.C. O'Connell (mailto:[email protected]) Join the CD PLAYER & DISC Discussions : http://tech.groups.yahoo.com/group/cdplayers/ http://launch.groups.yahoo.com/group/cdsound/ -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of David Parsons Sent: Monday, December 13, 2010 3:26 PM To: Pentax-Discuss Mail List Subject: Re: Could you electronically boost contrast between sensor and A/D? Read through this: http://theory.uchicago.edu/~ejm/pix/20d/tests/noise/noise-p3.html It's heavy duty stuff, but very good information. Regarding flat scenes, if you shoot in flat light, you will get flat scenes. Expanding the range isn't going to change the fact that you have flat lighting. Besides that, in post, you can modify or use a different program curve to render your image (that is essentially what Curves is used for). On Mon, Dec 13, 2010 at 1:53 PM, Larry Colen <[email protected]> wrote: > In general, we want to boost the dynamic range of our cameras. > However, sometimes we're shooting a very flat scene, or a lens with > low contrast. If we wanted to, for example, expand six stops of > dynamic range into 12, or 14, bits of data it seems that one way of > doing this *might* be to increase the ISO, but that would also > increase the noise. > > Are there be any electronic ways of doing this that wouldn't change > the sensitivity, or increase the noise? I don't expect that there are > ways for an end user to do this, but could a camera manufacturer allow > you to dial in the dynamic range of your camera for a particular > scene? > > -- > Larry Colen [email protected] sent from i4est > > > > > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. > -- David Parsons Photography http://www.davidparsonsphoto.com Aloha Photographer Photoblog http://alohaphotog.blogspot.com/ -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
