If you haven’t done any research into file types and the advantages for each, let me briefly tell you about JPEG’s. They suck…for many reasons (I’ll leave the serious discussion for my other blog.) I have no love for JPEG’s, but I didn’t have much choice on the iphone. At least, not until 645 Pro introduced their “developed RAW” files. Really, they’re TIFF files.
Yesterday was the first time using this app. It saved a TIFF and JPEG version of the few photos I took. The difference is very clear to me. Below are one set of pics. Not very interesting or pretty (not every pic can be a waterfall,) but its a good example of the difference in file types.
Neither one has been edited by me.
JPG – looks how I’d expect it to, given the conditions. Plenty of contrast and saturation. Its slightly cropped, for whatever reason.
TIF (dRAW) – much less contrast and a noticeably wider dynamic range. Notice there is more data in the shadows and highlights.
Which photo has more potential? The one with more data to work with, the TIFF file.
iPhone Photographer | David Pasillas 
Nice try.
645 Pro is a great app.
I’m intrigued by the Tiff format, but the app was very slow to save anything. I think it would be easy to miss shots using this camera.
Have you had issues with the speed?
I never recommend saving your images, using DSLR, as .tiff. Go either RAW or JPEG. Forever there will be a discussion of the RAW vs JPEG is best. Personally, prefer shooting RAW.
But, before you decide, read this: http://tinylanscapes.wordpress.com/2012/01/02/why-i-shoot-jpegs/
Agreed. I always shoot RAW with my Nikon. That’s when I took my photos to the next level. It’s a must for HDR in my opinion.
That blog post makes a fine case for using jpegs for macro. Since I prefer more dynamic range, RAW is a must. Plus I’m a control freak. I want to make all of the adjustments instead of letting my camera make some.