
Jeko
Enthusiast

May 5, 2007, 3:26 PM
Post #4 of 23
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Re: [szerangue] 14MB photographer
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I too once elected to shoot JPEGs only. At the time, I still think it was the right choice too. It was a business decision more than anything else... for many of the reasons you've identified. Excessive card space and slower processing were my two primary reasons for sacrificing the advantages of RAW. My point above was that those are no longer the case. CF cards are large and reasonably priced, and the computers/software can process large RAW files very well now. So, I shot my 5Ds in RAW, and the files are actually 16MB on average (I get approx 500 on an 8GB CF). Now I'll try to describe the RAW adavantages: I know you have a sense for compression from video. Well, same thing in photos. When you want to reduce the data to only what is needed, you sacrifice what is perceived to be of no importance. Perhaps shades of black are dropped, or degrees of white because the eye will not distinguish between them at their current levels. Go further, and drop cetain colors that a specific color-space (aRGB or sRGB) won't include. This is what JPEG conversion is doing. But, what if you later wanted to take the image and lighten it ALL up. The details that conversion dropped are forever lost in your JPEG, but not in the RAW file. Similar scenario for the darkening of over-exposed frames. And yes, white balancing shifts are truer if the colors out of your working color-space haven't been dropped. All these post-processing efforts to save/improve images respond much better coming from RAW files. As for the timing/storage issues you've mentioned.... I upload all the cards when I get home, they run while I sleep (many at one time unlike video) for about 90 minutes I estimate. I review all images in lightroom all day Sunday, organize and delete (many) before I make my basic adjustments (exposure and white balance primarily). Once ready, the remaining 5-700 are converted to JPEGs (Sunday overnight). Thus, it is then the JPEGs (not he RAWs) that get backed-up and stored, and later used to album build from there. RAW (which I just returned to using this 2007 season) has already saved a few key shots here and there, or improved my results a little bit here and there. I feel it simply makes my overall product a bit better, at no productivity loss and minimal investment in larger CF cards. Jeko Sony VX2100's, iRivers, M-audio 24/96, Canon 5Ds/20Ds (and too much glass), Vegas6, PhotoShop CS3, Lightroom, etc.
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