Late 1970s Lens Prices Okay, hear me out. I read some ads with lens prices from the late 70s. I averaged out the popular, yet not super expensive FLs and brands--Olympus OM, Konica Hexanon, Canon, Nikon, etc--and found that an f1.4 lens (lets just say a 50mm) cost around $150 and an f1.2 was around $200 (50/1.7 could be had under $100). I think it's safe to say that the BUILD-QUALITY was top-notch back then (all metal), plus they were FAST, SHARP, and if used on m4/3s, have GOOD CORNERS. Speed Boosting Adapted Lenses Now, in 2013 dollars (US), a 50/1.4 lens that was $150 in 1978 would be around $500. That fits with the Panasonic 25/1.4. But today, with the exception of an extra inch or so, you can take any of our 1970s f1.4s, Speed Boost them, and very cheaply, have an F1.0 lens. Assuming a speed booster was made for Hexanon lenses, and you have the 40/1.8, 50/1.7, and 135/3.2, for which you paid $150 total on ebay and $400 for the focal-length reducing and speed-boosting adapter, you have at the end of the day paid $600 in today's dollars for three lenses: That's a deal! Now I'm not going to even attempt to work out all the comparisons of cheap labor, cheaper materials, how the world's changed, how m4/3s isn't the mainstream and how APS-C or FF might be more mainstream, etc. But I want to show some options: 1) In 1978, buying a 1.2, 1.4, and 1.7 lens would cost you $450, or in 2013, US$1500. 2) In 2013 you can get a slower set--25/1.4, 45/1.8, and 75/1.8--for about $1600. 3) In 2013 you can get the Voitlander 17/0.95, 25/0.95, and SLR Magic 50/0.95 for $3000. 4) In 2013 you can get the Speed-booster to make 3 used f1.0, f1.2, and a f2.5 for $600. So here's my point. Since it's so easy to speed boost a lens, and since m4/3s has a smaller sensor, and since Voitlander is already doing what I'm suggesting, why aren't Panasonic and Olympus churning out hoards of m4/3s lenses with numbers like 38/1.1 for prices around the $600 mark? This new Panasonic 42.5/1.2 is like what I'm suggesting, but I doubt the price is going to be what I'd want an inflation-adjusted 1978 "nifty-fifty" ($500) with an extra FL-reducing speed-boosting" element ($100?) in each lens to be priced at. Sakar made some sample "Kodak"-branded lenses--25/0.95, 50/1.1--and I think it said the price will be around $500. Wouldn't a few of those be nice? I mean, I love the $300 45/1.8, but wouldn't a $600 35/1.2--plastic or not--also have a place in your camera bag? Note: I didn't calculate and did a lot of averaging for numbers here. I'm just thinking out loud about what lenses I want and at what price!