So, you and I may be the only two folks on the planet who cannot do a Bluetooth transfer from phone to Mac, but I doubt it. I've not discovered anyone who has been able to do it and therefore provide me with a method to accomplish it.
However, all is not lost. Save your K750i photos to your Memory Stick. Buy a Memory Stick reader (they cost around $25), and, voila, you can automatically download your photos to iPhoto, and you're done. That's what I do. I also store MP3's that I convert from Apple Lossless to MP3 on the Memory Stick, so I have a wealth of cool ringtones for my phone. No, I would never use the phone as an iPod replacement. It makes no sense.