So I tried to gather all the prices of the lenses with native mounts for Micro Four Thirds that are available in both Europe and US and smash them in Excel Spreadsheet. The problem was that some lenses are not available in Italy, and even some old ones, so I had to convert them from $ to €. The prices where gathered from www.trovaprezzi.com (which is a database for other sites where you can purchase) with the first 3 lowest prices available and calculated the average of those 3. The lenses that are not available in Italy where converter from the price of B&H. The coloring was done for a more helpful comparison between the lenses and for that reason I choosen Weight, Length and Filter Thread as specifications (for performance search for reviews). Blue: Very Low Green: Low Yellow: Medium Orange: High Red: Very High For Weight I made the following categorization: 0-125 gr. = Blue 125-250 gr. = Green 250-500 gr. = Yellow 500-750 gr. = Orange 750-2000 gr. = Red For Length I made the following categorization: 0-2.5cm = Blue 2.5-5cm = Green 5-7.5cm = Yellow 7.5-10cm = Orange 10-46cm = Red For Filter Thread I made the following categorization: No Filter Thread + 22mm + 37mm = Blue 46mm = Green 52mm + 55mm + 58mm = Yellow 62mm + 67mm = Orange 72mm + 95mm + 105mm = Red For Price I made the following categorization: 0-300 = Blue 300-500 = Green 500-750 = Yellow 750-1000 = Orange 1000-1250 = Red The color comparison is for and between the Micro Four Thirds lenses and not other systems and may not be to your liking and/or opinion. The circle means that it does not have a filter thread and the ? means that there are no available information (from B&H Photo Video Digital Cameras, Photography, Camcorders) and I did not search more of it ... sorry about that. The T-Mount and the purple at the last column are just a few filters that I'm interested in. I hope you might find this useful as it is to me (I have made a few of this for Canon, Nikon, Sony, Pentax and Samsung for study).