topic Re: Camera SX50HS - Histogram: RAW or JPG? SX50HS in Point & Shoot Digital Cameras

Camera SX50HS - Histogram: RAW or JPG? SX50HS

Grazie — Wed, 28 Jun 2017 10:29:37 GMT

Camera SX50HS

When I have dual capture, meaning, I can take RAW and JPG, what is the Histogram considering? I ask because on review the RAW and JPG Histograms are different. Yes, I know that the size format is different, and I expect the Histogram to reflect this, but just WHAT is the Histogram considering? R or J? Or maybe neither and that this Histogram is ONLY what the camera is seeing, regardless of format.

TIA

Re: Camera SX50HS - Histogram: RAW or JPG? SX50HS

Peter — Wed, 28 Jun 2017 17:12:50 GMT

The histogram is from jpg. With third part hack CHDK you maybe will be able to use raw histogram. The latest time I used CHDK was when S3 IS was new.

Re: Camera SX50HS - Histogram: RAW or JPG? SX50HS

Grazie — Wed, 28 Jun 2017 17:24:31 GMT

Thanks Peter - understood.

G

Re: Camera SX50HS - Histogram: RAW or JPG? SX50HS

kvbarkley — Wed, 28 Jun 2017 17:48:50 GMT

A histogram only makes sense on "cooked" data - so the JPEG data is used. There was an old Luminous Landscape article on this very subject, but it is currently behind a paywall.

After all, without white balance applied, what should the colors be?

Re: Camera SX50HS - Histogram: RAW or JPG? SX50HS

Peter — Wed, 28 Jun 2017 18:54:33 GMT

@kvbarkley wrote:
A histogram only makes sense on "cooked" data - so the JPEG data is used. There was an old Luminous Landscape article on this very subject, but it is currently behind a paywall.

After all, without white balance applied, what should the colors be?

I find in camera raw histogram useful. Miss it really much with my Canon M5.

First image, a print screen from the display from my 6D: 1% of red channel, 9% of green channel and 5% of blue channel blown out. I also get a suggestion of -1,5 EV to get all the highlights. Perhaps -1,3 would be perfect to just blow the highligts in green channel 1% and try to recover it in Darktable.

Second image, Darktable with raw highlight clipping activated.

Re: Camera SX50HS - Histogram: RAW or JPG? SX50HS

kvbarkley — Fri, 30 Jun 2017 17:08:25 GMT

This was the point of the LL article. You can display a raw histogram, but it uses the JPEG data to do it.

Re: Camera SX50HS - Histogram: RAW or JPG? SX50HS

Peter — Fri, 30 Jun 2017 17:24:23 GMT

No picture style, no white balance. Do you have a link to the paywall article?

Re: Camera SX50HS - Histogram: RAW or JPG? SX50HS

kvbarkley — Fri, 30 Jun 2017 21:14:15 GMT

No, but I am sure if you search LL for "RAW Histogram" it will pop up.

Re: Camera SX50HS - Histogram: RAW or JPG? SX50HS

Peter — Fri, 30 Jun 2017 22:18:05 GMT

@kvbarkley wrote:
No, but I am sure if you search LL for "RAW Histogram" it will pop up.

It didn´t. Only found people begging for raw histogram at the forum over there.

Re: Camera SX50HS - Histogram: RAW or JPG? SX50HS

kvbarkley — Fri, 30 Jun 2017 22:51:10 GMT

Sorry, my google-foo failed.