Learn me about RAW

madecov

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I don't see a whole lot of difference.
I have the Fuji S9100

According to reviews there isn't a whole lot of difference between the fine setting on Jpeg and RAW.
RAW also slows the camera down a lot.
So why would I bother?
--
In god we trust, all others are suspects
 
On that camera, you probably shouldn't. It's very annoying to shoot if your camera freezes for ten seconds after every shot.

However, the point of RAW isn't so much improved quality (even though you do get that, too) as more versatility. You can white balance in post-processing, apply more or less noise reduction as you like, use different color balances, contrast curves, and so on.

Petteri
--
http://www.prime-junta.net/
http://www.flickr.com/photos/primejunta/
 
as a general rule you should use it in tricky, low-light situations. otherwise, don't bother because the quality difference is really minimal.
On that camera, you probably shouldn't. It's very annoying to shoot
if your camera freezes for ten seconds after every shot.

However, the point of RAW isn't so much improved quality (even
though you do get that, too) as more versatility. You can white
balance in post-processing, apply more or less noise reduction as
you like, use different color balances, contrast curves, and so on.

Petteri
--
http://www.prime-junta.net/
http://www.flickr.com/photos/primejunta/
 
the differences in quality have to do with the jpeg engine used. it can be significant, although i don't know about this particular cam.

but mainly, you have an attenuated file with a jpeg that has already been 'cooked'. furthermore, you have to be careful in pp that the changes you make don't increase the loss. with the raw you have a great deal more data left to play with.

so, the concrete examples above are correct, but more generally if you are going to do a great deal of pp work, NO MATTER WHAT IT IS, you want to work with the raw files.

you also want to work on a copy of that raw file when using programs that alter it so that you retain your original [in the future you may have access to a better pp program, who knows?]. i am currently a lightzone convert. it NEVER changes the original raw's OR jpeg's OR tiff's. all changes are saved as metadata.
 
I used to use RAW on my fuji 5500, the ability to knock down the sharpening and correct for chromatic aberration alone made it worth doing.

And white balance, of course.
 
Thanks.

I was actually figuring I would use RAW for travel pictures that I might want to print. For general family and friends I would just stick with Jpeg
--
In god we trust, all others are suspects
 
I don't deny 'learn me' is unconventional, though it has been growing in use in recent years. Even so, it was good enough for Shakespeare -

I bade the vile owl go learn me the tenor of the proclamation, and he rails upon me.
 
I don't see a whole lot of difference.
I have the Fuji S9100
According to reviews there isn't a whole lot of difference between
the fine setting on Jpeg and RAW.
RAW also slows the camera down a lot.
So why would I bother?
--
In god we trust, all others are suspects
I don't see much difference either, when I download the photos to my computer. If I do see a difference it's that the jpegs are sometimes better. This is because if the camera is set on jpeg, the camera takes the raw image, applies a white balance filter, may perform some noise removal, sharpens it (even if your sharpening is set at zero) and applies any further processing you have set the camera to perform and then it compresses this raw file into a jpeg file.

So a jpeg is already processed. Further processing (with good quality results) can be difficult because a lot of the original information in the raw image is no longer there. You can make adjustments but extensive ones will lead to artifacts and other types of image degradation.

The raw photo however has had nothing done to it. It's te original unprocessed file. All the information is still there to easily change white balance to anything you want. You can easily adjust exposure evenly across the entire image at least 1 stop (even 2 stops) in either direction. (although blown highlights or clipped shadows can't be fixed) After these corrections are performed (if needed) further processing can be done with far better results than what you would get trying to do the same processing to a jpeg. Being able to choose, say the method of sharpening, depending on the particular photo can really help to get the best final results for viewing.

Nothing wrong with jpegs. But you're limited to the processing available by the camera and while some adjustments can still be made to a jpeg, it's pretty much meant to be a final result to which only very minor further processing can be done. With raw, all the processing is completely your choice. And very powerful programs (compared to what's in the camera) can be used to process the photo to a person's own taste which may differ from what the camera can give you no matter how much you mess around with it's controls.

Some people like the idea of being able to make all the choices in the processing of their images. No different than some people used to like working on their photos in the darkroom.

Like film, you could send your negatives to the photomat to have them processed and you're stuck with whatever comes out of the machine, much like you are when taking jpegs with digital. Those who like to take control and develop their negative to their own specifications could do so by developing them in the darkroom. Neither way is better than the other but simply depends on the photographers choice.

Raw vs jpeg isn't a matter of what's better out of the camera but what you can do with it after it comes out of the camera.

Using raw can seem like a pain in the butt sometimes, expecially with a digicam. But personally, having limited choices in the processing of my photos would be a pain in the butt too. But, like anything, a person should choose what's right for them. I can't see myself limiting the processing of my landscapes to only what's available from my camera. I'm quite picky about this. Quite serious, in fact. OTOH, if I'm out doing bird photos using sequental shooting, using jpeg is just fantastic compared to raw. Trying to do it with raw would really ruin my fun. So it depends what a person wants. Overall, using raw isn't better than using jpegs, IMO. What's better is simply having the choice.
 
I don't deny 'learn me' is unconventional, though it has been
growing in use in recent years. Even so, it was good enough for
Shakespeare -

I bade the vile owl go learn me the tenor of the proclamation, and
he rails upon me.
Im Swedish, but "learn me" sounds totally ok to me.
How would one put it in correct english if "learn me" ain't correct?

"Me learn"? :D
 
The raw photo however has had nothing done to it. It's te original
unprocessed file. All the information is still there to easily
change white balance to anything you want. You can easily adjust
exposure evenly across the entire image at least 1 stop (even 2
stops) in either direction. (although blown highlights or clipped
shadows can't be fixed)
But blown highlights is like the perfect example of when you really need to change exposure afterwards. You mean its impossible even when shooting raw?

Maybe what you do when shooting raw is to constantly underexpose so you dont blow anything, and then compensate upwards in the raw-processing to get it perfect?
 
Maybe what you do when shooting raw is to constantly underexpose so
you dont blow anything, and then compensate upwards in the
raw-processing to get it perfect?
Not a good idea - underexposing causes loss of detail and increased noise, the key is correct exposure, if any exposure in RAW is necessary it ideally wants to be "downwards" to the left

RAW is a great help when using the technique of "exposing to the right". I shoot RAW all the time even though it takes a second or two longer, the quality/flexibility benefits for my landscape photographs are more than worth the extra wait

simon

--
http://www.landscapephotographyuk.com/

uk landscape photography from Anglesey and Snowdonia in North Wales and other regions.
 
Im Swedish, but "learn me" sounds totally ok to me.
How would one put it in correct english if "learn me" ain't correct?

"Me learn"? :D
Shakespeare's now archaic usage notwithstanding, the verb "to teach" is to impart knowledge or skill and "to learn" is to gain knowledge or skill.

"Teach me English so that I may learn to use it better."

"Learn me" is a colloquial usage that usually implies some sort of punishment.
 
Im Swedish, but "learn me" sounds totally ok to me.
How would one put it in correct english if "learn me" ain't correct?

"Me learn"? :D
Shakespeare's now archaic usage notwithstanding, the verb "to
teach" is to impart knowledge or skill and "to learn" is to gain
knowledge or skill.

"Teach me English so that I may learn to use it better."

"Learn me" is a colloquial usage that usually implies some sort of
punishment.
 
Unprocessed Raw files typically contain a slightly wider dynamic range than finished jpegs. This gives you a bit of wiggle room.

The image quality benefits of raw generally seem to be most obvious for large sensor DSRs, for some reason. I shoot raw with DSLRs but jpeg with digicams as the ones I have aren't really at their best in raw mode and the image quality benefits aren't so obvious as with my DSLRs.
The raw photo however has had nothing done to it. It's te original
unprocessed file. All the information is still there to easily
change white balance to anything you want. You can easily adjust
exposure evenly across the entire image at least 1 stop (even 2
stops) in either direction. (although blown highlights or clipped
shadows can't be fixed)
But blown highlights is like the perfect example of when you really
need to change exposure afterwards. You mean its impossible even
when shooting raw?
Maybe what you do when shooting raw is to constantly underexpose so
you dont blow anything, and then compensate upwards in the
raw-processing to get it perfect?
--
Galleries and website: http://www.whisperingcat.co.uk/mainindex.htm
 
Hi,

Here are my personal thoughts I have put down a couple of months ago on why I shoot exclusively RAW:

http://forums.dpreview.com/forums/read.asp?forum=1024&message=20487933

It's a long thread, so you may look for Part 1 to Part 8 at your first reading, and if still interested there are a lot of good comments there by other forum members worth to positively consider.

Hope it helps! :-)

--
Cheers, Feri

'I can look at a fine photograph and sometimes I can hear music. Ansel Adams.'
 
cause i do it the exact oposite.
Thanks.
I was actually figuring I would use RAW for travel pictures that I
might want to print. For general family and friends I would just
stick with Jpeg
--
In god we trust, all others are suspects
 

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