Search found 1674 matches

by jsachs
November 23rd, 2012, 4:40 pm
Forum: Picture Window Support
Topic: Bad Pixel file
Replies: 6
Views: 2798

Re: Bad Pixel file

I believe this is a dcraw feature - the following is from the dcraw documentation: :./.badpixels, ../.badpixels, ../../.badpixels, ... List of your camera's dead pixels, so that dcraw can interpolate around them. Each line specifies the column, row, and UNIX time of death for one pixel. For example:...
by jsachs
November 21st, 2012, 8:45 pm
Forum: Picture Window Support
Topic: Tint Transform
Replies: 9
Views: 3167

Re: Tint Transform

I might have some idea of what you are trying to accomplish if you posted some sample images and patches. You can make all the patches the same tone using the Color Curves, switching to HSL or HSV color space and setting the L or V curve to be a horizontal line. This will force all the patches to ha...
by jsachs
November 19th, 2012, 12:36 pm
Forum: Picture Window Support
Topic: PWP and graphics tablets
Replies: 12
Views: 3903

Re: PWP and graphics tablets

In my experience, using a tablet for photo editing is less intuitive that one might think. Tablet/Displays that work as a pressure-sensitive touch screen so you can use a stylus directly on the image, are much better idea (e.g. the Wacom Cintiq), but these are really expensive. I find that a tablet ...
by jsachs
October 6th, 2012, 6:56 pm
Forum: Picture Window Support
Topic: Switch to Mac
Replies: 23
Views: 8222

Re: Switch to Mac

Profiles are filtered as necessary depending on the context - for example printer profiles cannot be used as monitor profiles or scanner profiles, etc.
by jsachs
October 4th, 2012, 6:41 am
Forum: Picture Window Support
Topic: Undoing halos and 'chroma fogging?'
Replies: 12
Views: 10175

Re: Undoing halos and 'chroma fogging?'

I haven't tried this, but if the problem is sensor blooming (spillover from bright areas) in a particular channel, perhaps treating that channel as a mask and feathering it with a negative radius might eliminate some of the spillover.
by jsachs
August 30th, 2012, 7:07 am
Forum: Picture Window Support
Topic: Enabling 10-bit Color
Replies: 10
Views: 1815

Re: Enabling 10-bit Color

It has been thoroughly documented that under ideal conditions the eye can separate about 200 gray levels. If the number was significantly higher than 256, you would be able to see banding in a continuous gradient. The number of distinguishable levels of colors is considerably worse than for neutrals...
by jsachs
August 24th, 2012, 8:22 pm
Forum: Picture Window Support
Topic: Enabling 10-bit Color
Replies: 10
Views: 1815

Re: Enabling 10-bit Color

PWP does not support 10-bit color as in the link you provided, however 8-bit color supports more intensity levels per channel than the eye can distinguish as long as the monitor gamma is set correctly, so this is mostly marketing hype except for certain special applications.
by jsachs
August 22nd, 2012, 12:35 pm
Forum: Picture Window Support
Topic: Composite Transformation
Replies: 1
Views: 814

Re: Composite Transformation

Composite does not automatically convert the overlay image to the color space of the base image which is why there is a warning.
by jsachs
August 20th, 2012, 11:14 am
Forum: Picture Window Support
Topic: Switch to Mac
Replies: 23
Views: 8222

Re: Switch to Mac

If the printer profile option is not displayed in the Print dialog box it means than color management is not available - probably because it is disabled (see File/Color Management dialog) or possibly because the image is black and white.
by jsachs
August 11th, 2012, 6:51 am
Forum: Picture Window Support
Topic: How to reduce image size without losing sharpness?
Replies: 5
Views: 2405

Re: How to reduce image size without losing sharpness?

The other useful technique is to use the special effects/high contrast transformation on the image right after you scan it.