- Joined
- Nov 27, 2011
- Messages
- 7,720
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- 4,578
- Location
- St. Louis
- Can others edit my Photos
- Photos OK to edit
That's not a maybe. I went for my morning walk today in the park and snapped a rather touristy pic of the Art Museum on the hill and bridge below over the river. Here's the processed image:You may not get the best possible results from the RAw if exposing for jpeg.
And here's the JPEG the camera made: Trying to edit this JPEG to look like my processed image above would be a fools errand -- it's trashed.
To take the photo I set the exposure comp to +1.3. Fair to assume the camera JPEG is 1 and 1/3 stops overexposed. My exposure for the sensor in the camera is perfect which made it very easy to process the raw file. I set an exposure that fully utilized the sensor -- I used all of it. If to get a good JPEG I had to expose 1 and 1/3 stops less that would leave 60% of the sensor unused -- basically a 60/40 split, a JPEG exposure would use 40% of the sensor and 60% would be left unused. Consider this analogy; go to the grocery store and buy a gallon of milk (128 ounces). When you get home pour 76 ounces down the drain and you get to put 52 ounces in the frig. Now the photo I took after this one the EC was +1, so a 50/50 split. Some photos I take I only have a +.7 EC but in others I make it to +2 and above (75/25 split -- you get to keep 1 quart of milk after dumping 3). Point being the discrepancy is often significant.
Now it varies from one camera manufacturer to another. My Nikon does the above the least of my cameras and I rarely see an EC greater than +1 whereas my Fuji is worse than my Olympus used here, but they all do it to a greater/lesser degree.
You're right even a raw file that only uses 40% of the sensor is still better for editing than a camera JPEG and I'd still rather have that underexposed raw file than just the JPEG. But JPEG otherwise offers me no advantage that's worth underutilizing my camera sensor by 60%. I can't comfortably walk with my bigger FF camera (3 pounds) and so I walk with this 1 pound M4/3 Olympus PenLite. That's 4 times less sensor area than my FF camera and so all the more reason for me to use that smaller sensor to maximum advantage. Shooting JPEG would actually be more work for me and more time consuming. As I noted above I like lighting conditions (side and backlight) that are challenging for the camera processor -- there is no "get it right in camera" option and so I'd have to shoot the JPEG planning to then attempt a repair in post -- that's going to be more difficult and take more time (if it's even possible) than just saving and processing a raw file.But with RAW also, you will get more to edit with. So it's still worth shooting Raw + jpeg.
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