Questions about Mini HDMI vs HDMI

Everything being equal, the mini-to-standard HDMI cable will not degrade your signal. The signal is digital. A DVI-to-HDMI adapter will also not degrade the signal.

The reason I qualified it above is there is likely a little loss of distance when using the adapter. So if you're pushing the length (greater than 25 feet for instance) you might start to pick-up bit errors. But, you'll know if you do - they'll be obvious artifacts in the picture not subtle things like the color being off or the picture dimmer. Best way to find out if you have bit errors is to try the adapter and find out. Like I said, any problems will be obvious (sparkles, lines, single color screens, no picture).

You can also buy a mini-HDMI to HDMI cable - just make sure it is a "high speed" (should say those words) cable to support 3D.

You're fine with the converter. If you want to be ultra-sure, use an HDMI cable that is certified to be a high speed cable. Really, the best advice is to try your cable first and see if it works. No harm in that.

My son has a MacBookPro and he uses a mini-HDMI to HDMI cable when he wants to play some games on the LCD and it looks (and sounds) just fine. I've even seen him doing his chemistry homework which is kinda cool looking on the tv.