Would someone please explain to me what RAW is?
Sandra wrote:
Would someone please explain to me what RAW is?
Hi Sandra: Simplest explaination, RAW is to JPEG what a negative was to a picture in the days of film photography. Doesn't explain much, let me try it this way. When you take a picture using the RAW format you are capturing all the information into your memory card. In other words it doesn't discard any image data. Approximately 21 MB of information. Then all that information can be used to do a lot more editing in a post processing program. Should you take a picture in JPEG there is less information recorded to the memory card, about 10 MB of data which results fewer pixels. The image data is compressed into a smaller file format. Meaning some of the data is discarded in camera while it is being recorded. Hope this helps, there are a lot more UHH members that I'm sure will give a lot more accurate explaination than I can.
THANKS SO MUCH FOR ASKING, Sandra! While our people here on UHH are really fine and wonderfully helpful, I feel like one of these days someone will say "Shut it, Buckeye! Enough your qq"!
And Travlmn46, thanks for the explanation. Don't know about you, Sandra, but I am working through stroke and I got a LOT to learn. This RAW will take me a LOT of figuring out, but at least the qq is answered!
Thanks for that, I get it, the "negative" example, along with other basic info I had picked up recently, put it together 4 me. cheers,Gavin.
travlnman46 wrote:
Sandra wrote:
Would someone please explain to me what RAW is?
Hi Sandra: Simplest explaination, RAW is to JPEG what a negative was to a picture in the days of film photography. Doesn't explain much, let me try it this way. When you take a picture using the RAW format you are capturing all the information into your memory card. In other words it doesn't discard any image data. Approximately 21 MB of information. Then all that information can be used to do a lot more editing in a post processing program. Should you take a picture in JPEG there is less information recorded to the memory card, about 10 MB of data which results fewer pixels. The image data is compressed into a smaller file format. Meaning some of the data is discarded in camera while it is being recorded. Hope this helps, there are a lot more UHH members that I'm sure will give a lot more accurate explaination than I can.
quote=Sandra Would someone please explain to me w... (
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JimH
Loc: Western South Jersey, USA
The thing about a RAW file is simply that it's what your sensor records. Virtually all DSLRs, after you press the shutter, will do SOME processing of all that data to make a JPEG file - adjust colors, shadows, highlights, flesh tones, maybe sharpen or soften a bit, all depending in WHICH, if any, "Shooting Mode" or Picture Style you select. In many cases, it does just fine, and your JPEG is perfectly serviceable.
The RAW file, on the other hand, would look like crap if you could see it. What you see in a "RAW FILE VIEWER" or whatever, is a JPEG thumbnail of the RAW data. Now, this JPEG is not the same as selecting "JPEG" as a file output type. It's a scrunched down, slightly cleaned up version of the RAW file.
RAW files are useful if you LIKE or NEED to do a lot of post processing. They let you work with ALL the data your sensor recorded.
But very often, you can get perfectly good shots just using the FINE or LARGE JPEG option in your camera, and understanding what your various picture styles or modes do.
Thank you for your reply to my question. I will be giving this a try.
A lot to be considered for sure.
JimH wrote:
The thing about a RAW file is simply that it's what your sensor records. Virtually all DSLRs, after you press the shutter, will do SOME processing of all that data to make a JPEG file - adjust colors, shadows, highlights, flesh tones, maybe sharpen or soften a bit, all depending in WHICH, if any, "Shooting Mode" or Picture Style you select. In many cases, it does just fine, and your JPEG is perfectly serviceable.
The RAW file, on the other hand, would look like crap if you could see it. What you see in a "RAW FILE VIEWER" or whatever, is a JPEG thumbnail of the RAW data. Now, this JPEG is not the same as selecting "JPEG" as a file output type. It's a scrunched down, slightly cleaned up version of the RAW file.
RAW files are useful if you LIKE or NEED to do a lot of post processing. They let you work with ALL the data your sensor recorded.
But very often, you can get perfectly good shots just using the FINE or LARGE JPEG option in your camera, and understanding what your various picture styles or modes do.
The thing about a RAW file is simply that it's wha... (
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Well, after going over all this great info with the working brain in the household, (my daughter)... turns out I don't have a RAW option on my camers , a Sanyo point and shoot type. Info good to know and very helpful to her. Thanks.
1941Buckeye wrote:
THANKS SO MUCH FOR ASKING, Sandra! While our people here on UHH are really fine and wonderfully helpful, I feel like one of these days someone will say "Shut it, Buckeye! Enough your qq"!
And Travlmn46, thanks for the explanation. Don't know about you, Sandra, but I am working through stroke and I got a LOT to learn. This RAW will take me a LOT of figuring out, but at least the qq is answered!
Welcome Buckeye ... glad to help things a long : )
The result for the photographer of all of the processing the camera does in creating a JPEG is that it is much more difficult to correct exposure or white balance problems because you're limited by the starting point. Using programs like Lightroom, Aftershoot Pro, or Nikon's free ViewNX with raw files allows you can correct these problems very quickly and easily.
That was a good explanation...
travlnman46 wrote:
Sandra wrote:
Would someone please explain to me what RAW is?
Hi Sandra: Simplest explaination, RAW is to JPEG what a negative was to a picture in the days of film photography. Doesn't explain much, let me try it this way. When you take a picture using the RAW format you are capturing all the information into your memory card. In other words it doesn't discard any image data. Approximately 21 MB of information. Then all that information can be used to do a lot more editing in a post processing program. Should you take a picture in JPEG there is less information recorded to the memory card, about 10 MB of data which results fewer pixels. The image data is compressed into a smaller file format. Meaning some of the data is discarded in camera while it is being recorded. Hope this helps, there are a lot more UHH members that I'm sure will give a lot more accurate explaination than I can.
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