Win a Pentax Limited Lens: Raffle Now Live!

wildboar · 03-03-2017, 01:32 PM

When in live-view, my K1 violently racks the focus in and out to the min/max stops of the lens EVERY time I hit the AF button. Focusing works normally with the same lenses when not using live view. The problem happens on all of my screw-drive lenses while in live-view, but my SDM/DC lenses work fine in live-view. Has anyone else seen this issue?

LightBug · 03-03-2017, 01:41 PM

What lens was used? On some screw mount older lenses, my Ks2 cdaf also rack back and forth.

**shardulm** · 03-03-2017, 01:43 PM

More common on Macro lenses as far as my experience... the D-FA 100 WR just goes all the way.. and is to be expected due to the very shallow depth of field and the possibility of the placement of the subject between MFD (very close) and infinity.

wildboar · 03-03-2017, 01:49 PM

15LTD, DA35, 40LTD, FA50, 70LTD.

It's not so much that it racks all the way, but it does it quite violently in some cases.

Also, I tested the same lenses on my K30 and they are fine.

03-03-2017, 01:32 PM	#1
wildboar Senior Member Join Date: Dec 2006 Location: Columbus Ohio Posts: 158	K1 racking focus in CDAF When in live-view, my K1 violently racks the focus in and out to the min/max stops of the lens EVERY time I hit the AF button. Focusing works normally with the same lenses when not using live view. The problem happens on all of my screw-drive lenses while in live-view, but my SDM/DC lenses work fine in live-view. Has anyone else seen this issue?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
back focus on k1	KX5	Pentax K-1 & K-1 II	16	01-06-2017 06:00 AM
Can barely see focus point in K1	yozza	Troubleshooting and Beginner Help	6	12-11-2016 05:53 PM
k1 focus tracking	yozza	Pentax DSLR Discussion	5	11-20-2016 06:12 PM
How to do a better manual focus in K1	kinkindoll	Pentax K-1 & K-1 II	16	05-07-2016 02:26 AM
Racking my brain - purchase advice, wwyd	wowarning	Pentax SLR Lens Discussion	62	03-12-2016 12:25 PM

03-03-2017, 01:41 PM	#2
LightBug Veteran Member Join Date: Nov 2007 Location: OC, CA, USA Posts: 506	What lens was used? On some screw mount older lenses, my Ks2 cdaf also rack back and forth.

03-03-2017, 01:43 PM	#3
shardulm Loyal Site Supporter Join Date: Jul 2013 Location: Cumming, GA Posts: 793	More common on Macro lenses as far as my experience... the D-FA 100 WR just goes all the way.. and is to be expected due to the very shallow depth of field and the possibility of the placement of the subject between MFD (very close) and infinity.

03-03-2017, 01:49 PM	#4
wildboar Senior Member Join Date: Dec 2006 Location: Columbus Ohio Posts: 158 Original Poster	15LTD, DA35, 40LTD, FA50, 70LTD. It's not so much that it racks all the way, but it does it quite violently in some cases. Also, I tested the same lenses on my K30 and they are fine.

K1 racking focus in CDAF

Win a Pentax Limited Lens: Raffle Now Live!