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by Dieter Mayr
December 13th, 2015, 10:56 am
Forum: Picture Window Support
Topic: Magic Lantern (for Canon) Dual ISO feature
Replies: 4
Views: 1908

Re: Magic Lantern (for Canon) Dual ISO feature

A smiliar approach was Fuji's SuperCCD SR sensor introduced in 2003. It had 2 photodiodes for each pixel, one high sensitive and one low sensitive. http://www.dpreview.com/articles/6851251325/fujisuperccdsr All the computation to combine the 2 images was done inside the camera. Would be interesting ...
by Dieter Mayr
December 7th, 2015, 12:01 pm
Forum: Picture Window Support
Topic: White Balance & Color Correction
Replies: 9
Views: 3055

Re: White Balance & Color Correction

Doug,

For me, it worked well with measuring the grey part of the card, so it should be ok.
by Dieter Mayr
December 7th, 2015, 11:59 am
Forum: Picture Window Support
Topic: Gradient Tool
Replies: 17
Views: 5843

Re: Gradient Tool

Marv,

If your histogram is ok it means that your data is ok, so the bands are caused by the (monitor) output chain somehow.
If it is possible a printout of a small strip of the image would make clear how the print looks like.
by Dieter Mayr
December 7th, 2015, 11:53 am
Forum: Picture Window Support
Topic: White Balance & Color Correction
Replies: 9
Views: 3055

Re: White Balance & Color Correction

Doug, I took your Jpeg picture and even though it looks kind of redish, it has actually a blue tint. I have developed your NEF with 6000K and measured the grey background with the readout tool. Neat the Top right corner I measure quiet exact neutral grey, 30% in each channel, a variation of about +/...
by Dieter Mayr
December 7th, 2015, 10:53 am
Forum: Picture Window Support
Topic: Grid in Workflow Preview
Replies: 3
Views: 1242

Re: Grid in Workflow Preview

Kiril,

Grid is greyed out in Workflow (at least i did not find a Widget where it is active).
I think it would be a useful addition to be able to use grid in workflows, too
by Dieter Mayr
December 7th, 2015, 6:13 am
Forum: Picture Window Support
Topic: White Balance & Color Correction
Replies: 9
Views: 3055

Re: White Balance & Color Correction

Doug, I have played around a little with your pictures. DSC_0005.NEF: When probing the white field of the card gives a very warm (red) result - about 6300K color temp. Probing the grey part of the card or the grey background results in 6000K color temp, and a good result for my taste. Probing the wh...
by Dieter Mayr
December 5th, 2015, 3:30 pm
Forum: Picture Window Support
Topic: Gradient Tool
Replies: 17
Views: 5843

Re: Gradient Tool

Marv, Did you have a look at the histogram of your gradient ? A gradient over the whole width or hight on the image should give a perfect rectangle, for lengths that are not divisible by 256 for 8 bit color there are some periodic spikes, because not all colors can have the same count of pixels. But...
by Dieter Mayr
December 4th, 2015, 3:53 am
Forum: Picture Window Support
Topic: Gradient Tool
Replies: 17
Views: 5843

Re: Gradient Tool

Marv, Didn't think of it, of course you can't use 16 bit images as a mask. Sorry. But as you mentioned that you created a gradient in PS directly with the colors, you can do that in PWP too. In the Gradient window, you have that Black to White line with 1 and 2 at the beginning resp. the end. Click ...
by Dieter Mayr
December 3rd, 2015, 4:19 am
Forum: Picture Window Support
Topic: White Balance & Color Correction
Replies: 9
Views: 3055

Re: White Balance & Color Correction

Doug, I do not have expieriencew with the Whibal you mentioned, I took a look on the net and it looked quiet bright compared to a 18% standard grey card I use. The documentation i found in their website didn't tell either. A 50% grey in PWP comes very close to the tone of my grey card. And on a &quo...
by Dieter Mayr
December 2nd, 2015, 3:26 pm
Forum: Picture Window Support
Topic: White Balance & Color Correction
Replies: 9
Views: 3055

Re: White Balance & Color Correction

Doug, Can it be that light reflected from a coloured surface has fallen on your grey card ? The eyes are quiet well "shielded" in their sockets, a grey card held in the wrong angle can easily get some "coloured" light. Outside it can easily happen to hold the grey card so it gets...

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