About AI auto
Good morning, I have a question from On1PR 2018 and I present it in case someone could guide me.
1st On1PR is designed to work with RAW.
2nd Shooting in Raw without taking the histogram to the right does not seem very logical.
3rd To reveal a Raw with the histogram on the right, we have to modify the exposure in the program as the first step.
4th In the development module, the "AI auto" option behaves as if it revealed a JPG, that is, it does not modify the exposure
Can anyone tell me the reason for this behavior?
Thank you for your attention
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By default Photo RAW applies a Camera Profile to an image when you open it in the Editor for the first time. This is normally "Standard". These are just LUTs which get applied to the photo before any other editing you might do. If you want to see the raw data as recorded by the sensor choose the Linear Raw option. This tells the program to not use a LUT. Your image will appear with less contrast and saturation but you now have full control over that from the beginning.
The Auto AI uses an AI to determine what it considers the "best" settings for each individual image. It may or may not adjust the Exposure slider as it sees the need. If the photo was properly exposed when taken it won't need any exposure adjustment. It is modifying the other sliders.
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Brian, thanks for your reply.
Your claim about AI is the 'official' answer, but with all due respect I have to tell you that I don't think that's the case.
I have processed several hundred photographs with PR2018 and PR2021, I systematically expose incorrectly, that is, I measure the lights and apply + 2.7EV and not once has the exposure changed, so I have given up applying the AI. My suspicion is that the AI does not contemplate that it can be exposed for the lights.
I suspect that the first part of your reply was intended for another user.
Thanks again for your work in this forum.
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No, the entire response was meant for you. I included it because many times I don't like where PR is starting my images either so I go to Linear RAW. I find the Camera Profiles will push the highlights in photos where I have exposed to the right over the edge so they appear blown out when I know they are not. A bit opposite from the situation you are describing but still relevant I thought.
I don't understand what you mean by, "To reveal a Raw with the histogram on the right…". Is this talking about ETTR or are you referring to its position in the UI?
Personally, I rarely use Auto AI. It tends to block up the blacks too much for me. I like contrasty photos but that's too much for me. 🙂 Those times I do use it it is just a starting point. I prefer to start with the Camera Profile which I often leave as is, I don't always jump to Linear RAW, then I set the Black & White points with their sliders and go from there.
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Understood, very relevant, I will try Linear RAW, today I have Standard On1 selected.
Yes, I mean ETTR.
I shoot with ETTR and then on the On1PR I have Standard On1 selected, I reduce the exposure as much as I raised it on the camera, I correct shadows and then what each photo needs.About AI, I think it's a buzzword, and that it really should be called Automatic.
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It is a buzzword but using it depends upon whether or not an actual AI was trained to do the automation. 😉 IMO
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Antolin
I assume from your comments that the histogram you are referring to is the one on the back of the camera. I don’t know if you realise but this histogram is a JPG representation and if you are shooting in RAW you have more latitude
Dave Morrow has a video explaining this on You Tube at www.youtube.com/watch?v=NQU4_CzvHLQ
Several of his other videos may be of interest
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Thanks Barry, I am aware that the histogram belongs to the jpg generated by the camera, so I determined, with the help of Rawdigger, what overexposure my camera supports. Now I expose for the lights with the overexposure obtained.
Thank you for your suggestion.
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Antolin, have you seen this discussion on histograms and using ETTR?
https://on1help.zendesk.com/hc/en-us/community/posts/4409936317709
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