Working with Raw files
Jan 22, 2018 15:26:48 #
I am new to shooting Raw and new to the forum. Please excuse me if what I thought to be true about shooting Raw is incorrect. I thought that when you shoot Raw that you have the ability to change all camera settings in post processing. Using Lightroom CC I can only see where to change White Balance. Changing exposure does not allow me to change shutter speed or f stop or ISO specifically. What does changing exposure exactly do? Does it change each of the three, ISO, shutter speed and f stop in its own combined manner? Sorry for my confusion. Any assistance with this is appreciated.
Jan 22, 2018 15:29:17 #
Jan 22, 2018 15:38:54 #
The ISO, shutter speed, aperture and focus are constants of the shot. You can't change them in post. However, you can change the white balance, brighten the overall image (as if you had used a longer shutter speed or wider aperture), or play around with the contrast. You can do some fancy stuff by making the dark areas darker or lighter and/or making the bright areas darker or lighter.
The advantage of raw is that you have a wider range of adjustments in post than you have on a jpg.
The advantage of raw is that you have a wider range of adjustments in post than you have on a jpg.
Jan 22, 2018 15:41:29 #
Tom K 66 wrote:
I am new to shooting Raw and new to the forum. Pl... (show quote)
Camera settings such as focus plane, aperture and speed are not changeable. ISO could be listed too but that would muddle the answer*. I really do not know where you got this wrong information. I have not seen it mentioned anywhere on UHH despite all the bad faith debate surrounding the jpg/raw fights (can't call that debates)
raw is about potential in color shade and exploiting the sensor dynamic range(DR). I just posted a thread on that... Color space vs bit depth vs DR.
Note that contrary to popular beliefs every modification one can do with a raw file is available to a JPG file - including WB -. The base for the edits on the other hand is really different. Raw offers the full potential offered by a camera sensor, using the right settings of course when a JPG file has only limitations. That is why raw is better. There is no other reason.
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* Artifacts created by ISO are correctable and with new sensor using ISO invariant technology all bets are off.
Jan 22, 2018 15:48:33 #
You're misinformed on changing any of the three sides of the exposure triangle in post processing. Rather, RAW gives you the greatest latitude to adjusting the resulting image. You can't go back and change the ISO, but if you were too low while still capturing a well focused image, you can brighten the image with less negative impact as compared to making the same change to a JPEG. You can't go back and make the shutter speed faster to freeze the movement of a football player. Nor can you add more depth of field say moving the aperture to f/11 from f/5.6 in post processing. Rather, the "all" applies to camera-controlled processing that are "baked into" the JPEG file when the RAW sensor data is processed within the camera. You can take the same RAW and bake it anyway you so desire on your computer rather than the method selected by the camera.
Jan 22, 2018 15:49:33 #
Tom K 66 wrote:
I am new to shooting Raw and new to the forum. Pl... (show quote)
Exposure means how much light falls on the sensor. That is controlled by the size of the aperture in the lens and the length of time the shutter is open. When you push the shutter release that is it! The exposure cannot be changed.
ISO, strictly speaking, is how much the (analog) signal from the sensor is amplified before the signal is digitized. That essentially is also fixed at the time the shutter is released because only the amplified and then digitized data is recorded and saved.
But the brightness of the saved data can be changed. It isn't technically accurate but many editing programs label such a change as either ISO or more often, and even less correct, as exposure. Actually it is a change in how brightly the data is displayed.
Jan 22, 2018 15:56:35 #
Tom K 66 wrote:
I am new to shooting Raw and new to the forum. Pl... (show quote)
When you edit a RAW file in Lightroom or in another RAW editor, you can, to an extent much greater than with JPG, change the exposure, and other related settings, such as contrast, highlights, shadows, blacks and whites. You can also modify white balance to a greater extent. You cannot, after the fact, modify shutter speed, f-stop, or ISO. Changing exposure does not modify shutter speed, f-stop, or ISO.
Jan 22, 2018 17:04:19 #
Jan 22, 2018 20:31:00 #
Tom K 66 wrote:
Using Lightroom CC I can only see where to change White Balance.
Since you have Lightroom CC, you also have Lightroom Classic CC. Dump CC and install Classic. CC was not finished cooking when released, should be a beta product. You'll be glad you did.
Jan 23, 2018 06:28:52 #
Tom K 66 wrote:
I am new to shooting Raw and new to the forum. Pl... (show quote)
You can change the appearance of the image, but you can't change the actual settings. There is quite a bit of leeway in processing a raw image, so you get the effect of changing shutter and aperture after the shot is taken.
Jan 23, 2018 07:25:35 #
Apaflo wrote:
the brightness of the saved data can be changed. It isn't technically accurate but many editing programs label such a change as either ISO or more often, and even less correct, as exposure. Actually it is a change in how brightly the data is displayed.
gimp has controls labeled "brightness" and "contrast"; every piece of software I've used has been labeled like that - I don't remember ever seeing a control labeled "ISO". When I use one to tweak the appearance of my JPEGs, I usually have to use both
Jan 23, 2018 07:28:35 #
I will suggest if you are going to use Lightroom and perhaps Photoshop ultimately that you invest a little money in the video training by Laura Shoe. I found it to be very good and in small bites of 5 to 15 minutes covering specific topics. Plus you can always rewatch and even follow along as you watch in your Lightroom.
Best,
Todd Ferguson
Best,
Todd Ferguson
Jan 23, 2018 08:06:28 #
Todd is right , I use LR and PS and also ON1 Photo Raw which if you have never had LR to me a much powerful program . All are compatible . Look at all of them with their 30 day free trial.
Jan 23, 2018 08:48:09 #
You cannot change camera settings with any of the post processing programs, so far as I know. You can manipulate the image to kingdom come, but you can’t do anything about the camera settings.
Jan 23, 2018 08:49:02 #
Notorious T.O.D. wrote:
I will suggest if you are going to use Lightroom and perhaps Photoshop ultimately that you invest a little money in the video training by Laura Shoe. I found it to be very good and in small bites of 5 to 15 minutes covering specific topics. Plus you can always rewatch and even follow along as you watch in your Lightroom.
Best,
Todd Ferguson
Best,
Todd Ferguson
I second that motion--that’s how I learned LR.
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