Originally posted by Unsinkable II But a flawed comparison needs to be called out.
The majority of the members on this forum probably use APS-C and are aware that their FA50/1.4 won't behave the same on their crop as it would on their film. So, comparing the two stops slower, narrower FOV Oly with the FA77 is disingenuous.
OK, I'll call out the flaws. ƒ/1.8 is ƒ/1.8. This lens isn't "two stops slower". It may provide less DOF at a given aperture when compared to a different lens, 150mm, used on full frame. And that DOF may correspond to using a different 150mm FF lens and stopping it down. But the current lens will have a two stops quicker shutter speed to achieve the same appearance. It isn't slower. It has a different DOF.
And if you can't achieve subject isolation or the more popular "DOF Control" at these distances and apertures, then you aren't trying. So I find complaining about characteristics related to subject isolation, when applied to this lens, to be petulant and irritating.
As for the commentary about how this isn't an FA77 killer, I'll respond that I've enjoyed shooting Olympus more than Pentax ever since I gave µ4/3 a try. When the E-M5 arrived and I could use ISO 6400 again, just like on my K-5, I quickly sold my K-5 and have been determining whether to sell my FA 77 or to keep it for occasional use with my other "lesser" Pentax bodies. So in a real sense, I've found the µ4/3 system to be a winning system over one including the FA77. For me. I'm a two prime shooter, formerly DA40 and FA77, and I hardly ever chose Pentax once I acquired the PL25 and Oly 45. I may even sell the FA77 and use the proceeds to buy the Oly 75.