- Messages
- 463
- Name
- Julian
- Edit My Images
- Yes
On my 50D I shoot in raw and have the LCD view set up to show clipped highlights and the histograms. Picture style set to neutral. ALO and HTP always switched off. Nothing unusual there. However, I have noticed that when the raw files are opened in Canon's DPP for editing and the 'highlight alert' option is selected, the area shown as clipped is often less than that shown by the camera's LCD. This can often be a significant amount less too, dependent on the shot. I am assuming my 450D also does this but it has thus far gone unnoticed.
Now, is this because in DPP I am viewing the full 14 bit raw file but on the camera's LCD I am viewing an 8 bit jpeg representation of the raw file and some of the highlight detail has been lost in the conversion? If this is the case, does it also follow that the histograms, which presumably are derived from the same jpeg, are also slightly inaccurate for the same reason?
If this is the case, should the 'expose to the right' rule now become the 'expose slightly beyond the right' rule for raw shooters?
This issue only came to light at a show at the weekend, shooting white sheep in a white marquee (Wolverhampton's answer to a polar bear asleep in the snow). The camera said highlights blown, DPP said not.
Now, is this because in DPP I am viewing the full 14 bit raw file but on the camera's LCD I am viewing an 8 bit jpeg representation of the raw file and some of the highlight detail has been lost in the conversion? If this is the case, does it also follow that the histograms, which presumably are derived from the same jpeg, are also slightly inaccurate for the same reason?
If this is the case, should the 'expose to the right' rule now become the 'expose slightly beyond the right' rule for raw shooters?
This issue only came to light at a show at the weekend, shooting white sheep in a white marquee (Wolverhampton's answer to a polar bear asleep in the snow). The camera said highlights blown, DPP said not.
