Difference between SOOC JPG and Lightroom edits

StevenScholten

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Hi I just got my X-Pro2. I did a few quick shots both in Raw and JPG. I did a Camera Calibration with the same preset (Acros+R). It strikes me that there is a huge difference. between the 2. I did several shots all with the same result.



145a49a209e74398a50d859e4180a8fb.jpg



7500766c424e48ec96add2defd743613.jpg
 
There seems to be a stop exposure difference between de jpg and the RAW with Acros+R simulation

The same with other Film sims. Jjust noticed it with a Velvia foto as well. Had to push the RAW 0,9 in Lightroom
 
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Hmm I have my DR set to Auto. The shots that came out different have DR200. Some shot are OK but they have DR100. I wouldn't expect DR to have such a big impact on the total exposure.
 
Hmm I have my DR set to Auto. The shots that came out different have DR200. Some shot are OK but they have DR100. I wouldn't expect DR to have such a big impact on the total exposure.
The DR essentially works by underexposing the image (by one stop in the case of DR200), then boosting the shadows to compensate (I'm sure there's a little more to it, but that's the main gist of it). The resulting RAW image will be underexposed by one stop when shooting DR200 and two stops when shooting DR400.

Kurt
 
The shots that came out different have DR200. Some shot are OK but they have DR100. I wouldn't expect DR to have such a big impact on the total exposure.
That's what DR does. DR200 underexposes by one stop, DR400 underexposes by two stops. Then the JPEG conversion brightens the images back up.

But if you're working in Raw, it's up to your Raw conversion software to realize that the photos were intentionally underexposed by one or two stops, and adjust accordingly.
 
Hi I just got my X-Pro2. I did a few quick shots both in Raw and JPG. I did a Camera Calibration with the same preset (Acros+R). It strikes me that there is a huge difference. between the 2. I did several shots all with the same result.
I think you have to create a profile that includes a contrast bump if you want to match the in-camera JPG with Lightroom.
 
Hmm I have my DR set to Auto. The shots that came out different have DR200. Some shot are OK but they have DR100. I wouldn't expect DR to have such a big impact on the total exposure.
The DR essentially works by underexposing the image (by one stop in the case of DR200), then boosting the shadows to compensate (I'm sure there's a little more to it, but that's the main gist of it). The resulting RAW image will be underexposed by one stop when shooting DR200 and two stops when shooting DR400.

Kurt
Hey Kurt

I'm a TR6 driver ;-)

But back on topic. Does DR have an impact on the RAW file?? That would suprise me.
 
There seems to be a stop exposure difference between de jpg and the RAW with Acros+R simulation
If the images are derived from the same raw data, then there is no exposure difference. They have different brightness, but the exposure, determined by aperture and shutter speed, certainly is the same.
The same with other Film sims. Jjust noticed it with a Velvia foto as well. Had to push the RAW 0,9 in Lightroom
I am not sure if LR recognizes the RawExposureBias metadata tag. It hasn't in the past, and it may still not. At ISO400, that tag instructs a raw converter to brighten the image by 0.72EV through digital amplification. If LR doesn't recognize the tag, then that could explain why you needed to do it manually. Also, differences in the tone curves in the camera and in LR can account for differences in brightness, either across the entire frame or in selected areas (shadows vs mid tones vs highlights).
 
The shots that came out different have DR200. Some shot are OK but they have DR100. I wouldn't expect DR to have such a big impact on the total exposure.
That's what DR does. DR200 underexposes by one stop, DR400 underexposes by two stops. Then the JPEG conversion brightens the images back up.

But if you're working in Raw, it's up to your Raw conversion software to realize that the photos were intentionally underexposed by one or two stops, and adjust accordingly.
 
Hmm I have my DR set to Auto. The shots that came out different have DR200. Some shot are OK but they have DR100. I wouldn't expect DR to have such a big impact on the total exposure.
The DR essentially works by underexposing the image (by one stop in the case of DR200), then boosting the shadows to compensate (I'm sure there's a little more to it, but that's the main gist of it). The resulting RAW image will be underexposed by one stop when shooting DR200 and two stops when shooting DR400.

Kurt
Hey Kurt

I'm a TR6 driver ;-)

But back on topic. Does DR have an impact on the RAW file?? That would suprise me.
Yes. DR 200/400 has an impact on the raw file. This is a Fuji exception to the normal rule that JPEG focused adjustments don't apply to raw.

You'll not that in order to use either DR200 or DR400 the ISO must be raised above base. Normally with any ISO increase the sensor capture is boosted to compensate for the underexposure and this is apparent in the raw file. With DR200/400 engaged the signal gain that would boost the exposure is withheld.
 
Hmm I have my DR set to Auto. The shots that came out different have DR200. Some shot are OK but they have DR100. I wouldn't expect DR to have such a big impact on the total exposure.
The DR essentially works by underexposing the image (by one stop in the case of DR200), then boosting the shadows to compensate (I'm sure there's a little more to it, but that's the main gist of it). The resulting RAW image will be underexposed by one stop when shooting DR200 and two stops when shooting DR400.

Kurt
Hey Kurt

I'm a TR6 driver ;-)

But back on topic. Does DR have an impact on the RAW file?? That would suprise me.
The DR functions cause the camera to determine the exposure settings differently. DR100 would result in a certain exposure, DR200 would give 1EV less, and DR400 would give 2EV less. At the same time, the analog amplification in the camera, when the shot is taken, is reduced by 1EV (DR200) and 2EV (DR400), respectively. To get the image back to the normal brightness, digital amplification of 1EV (DR200) or 2EV (DR400) is applied. The tone curves used are also slightly different.

So, invoking the DR functions can have an impact on the raw data when they result in a different exposure compared to DR100. One can manually dial in the exposure parameters, of course, but sooc-JPEG shooters usually find it more convenient to use the DR function.
 
Ahhh I think I understand now. DR settings don't change the the RAW file itself, but on the exposure. As a result the RAW file can be underexposed.

Thanks for your help!
 
I think I understand now!!
 
Ahhh I think I understand now. DR settings don't change the the RAW file itself, but on the exposure. As a result the RAW file can be underexposed.
Correct, basically.

'Underexposed' is a confusing term. Let's say that the exposure was simply lower.

 
That is why I mostly shoot JPG. Especially with Fuji, its jpg engine does an excellent job and who has time to deal with RAW images?
 
Hmm I have my DR set to Auto. The shots that came out different have DR200. Some shot are OK but they have DR100. I wouldn't expect DR to have such a big impact on the total exposure.
The DR essentially works by underexposing the image (by one stop in the case of DR200), then boosting the shadows to compensate (I'm sure there's a little more to it, but that's the main gist of it). The resulting RAW image will be underexposed by one stop when shooting DR200 and two stops when shooting DR400.

Kurt
Hey Kurt

I'm a TR6 driver ;-)

But back on topic. Does DR have an impact on the RAW file?? That would suprise me.
I owned a '72 TR6 at one time as well. :)

Others have pretty well explained what goes on when using the DR function. I personally don't use it when shooting RAW. It's not that it has a true impact on the RAW file. As others have explained, it simply directs the camera to expose one or two stops less. I think the Nikon's Active D-Lighting works in a similar manner.

Kurt
 
That is why I mostly shoot JPG. Especially with Fuji, its jpg engine does an excellent job and who has time to deal with RAW images?
Anyone who has time to read this Forum.
 
That is why I mostly shoot JPG. Especially with Fuji, its jpg engine does an excellent job and who has time to deal with RAW images?
Anyone who has time to read this Forum.
Well then I guess I'm an exception to that. I split my time between Switzerland and Florida. Daytime in Switzerland, JPEG only. Nights in Switzerland and wild lighting contrasts in Florida, I'm in R+J. My view is the JPEG is the baseline. Use the raw's when needed.

I suspect there are a lot of closet JPEG shooters on this forum. Probably using raw as an insurance policy as opposed to the default.
 
Hmm I have my DR set to Auto. The shots that came out different have DR200. Some shot are OK but they have DR100. I wouldn't expect DR to have such a big impact on the total exposure.
Yep. That is exactly how DR works. Other than at 100, it will underexpose and boost later in processing to compensate. LR is apparently not reading the flag indicating this. Anyway, if you like the fuji look (especially the new ACROS emulation) you will be hard pressed to ever consistently match this in any post processing SW. RAW processing is tons of fun, and very creative, but in my opinion you must give up the lure of trying to look like SOOC fuji. Aint gonna happen.
 
Well I must say that they do like the same. Used the raw file. Then used acros film simulation and pushed the exposure 0.91. The result looked the same as the sooc jpg with DR200.
 

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