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- Malcolm
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It's a bit late if you've ordered it but...
I've had two of these, the original and the MK2 that came along after a few years. On the positive side I liked the focal length and it's sharp enough and very compact too and on an RF style body it makes for a compact camera and lens combination. On the negative side you can get banding at higher ISO's (and this is lens related even though it's hard to understand why...) and I'm not sure it's suitable for focus tracking... but check that as I think there's an issue with tracking or video or something like that but I can't remember exactly what the issue is but it's something that never bothered me as I don't use tracking or shoot video. The lens is also relatively slow to focus but this was never much of a real world issue for me.
Anyway, I changed mine for an Olympus 17mm f1.8. You could also take a look at the excellent Olympus 45mm f1.8.
And another point.
The GX8 can unfortunately induce shutter shock when used with some lenses and this shows up as a slight blurring or even a slight double image and usually manifests at shutter speeds of something like 1/80 to 1/250 or so. It might be worth reading up on this issue before you invest too much in lenses to make sure that you avoid lenses that can manifest the issue.
The issue can be avoided by using the electronic shutter but this can cause rolling shutter effects and banding under some artificial flickering lighting. Sadly there doesn't seem to be a list of affected lenses so it's best googling for feedback on any lens you're interested in using on your camera.
I only have one micro four thirds lens which seems to be affected, the otherwise excellent 14-42mm mega OIS and amazingly my old Minolta Rokkor 50mm f1.2 is affected too.
I'm rather angry about this issue and personally I think that Panasonic should be ashamed of themselves especially as they knew about this issue for years and continued to sell affected body and lens combinations as kits. I think a few people at Panasonic need nailing to something over this issue. If it didn't exist I'd have probably bought a GX8 years ago.
That's true the 20mm can't be used with continuous autofocus in photo or video mode, only AFS or manual focus.
Thanks for the replies.
I am aware of the 'shutter shock' issue, but at the moment am relaxed about it as the various work arounds on 'type of shutter' selection apparently are supposed to cure the problem. I've read other reports that say the problem only occurred with a particular batch of cameras.
The general reports on the camera were so good, I decided to go ahead with buying one - so time will tell!