DA* 50-135: A quick quesiton about the focus ring

johnieutah
Posted 17/07/2015 - 14:02 Link
Hi everyone. I just picked one of these up 2nd hand and have a question about how the focus ring works (there was no manual in the box unfortunately)...

So there is the normal "range", I don't know, something to infinity. Once I reach either end of that scale, I am then able to turn the focus ring further. Is this something to do with Quickshift mechanism? How does one use Quickshift properly?

Lovely lens BTW. Will be taking this on the Trans-sib with me for a couple of months adventure around Asia.

Thanks!
gtis
Posted 17/07/2015 - 15:52 Link
Hi
Just checked mine and it does the same might be to do with
It being internal focussing
cheers Neil
pentax k3
DA* 300 f4 DA* 50-135 f 2.8 smc DA* 16-50 f2.8 50mm f1.7 pentax1.4xhd converter





Panasonic Dmc Fz200
davidstorm
Posted 17/07/2015 - 22:05 Link
This is normal for a DA*50-135, the focus ring has no 'stop'.

Regards
David
Flickr

Nicola's Apartments, Kassiopi, Corfu

Some cameras, some lenses, some bits 'n' bobs
johnriley
Posted 17/07/2015 - 22:58 Link
Yes, the ring can keep turning.

QuickShift is the ability to fine tune focus manually at any time, without having to engage manual focus with a switch or lever. If we find focus with a half depress of the shutter button and hold that position the manual focus ring can be used to alter the focus point. This can be especially useful in macro photography.
Best regards, John
johnieutah
Posted 18/07/2015 - 08:38 Link
Ok thanks guys. Just wanted to make sure it wasn't faulty or I was damaging the mechanism.

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