DA 300 F4 autofocus not working

Jimlad · 10-13-2020, 03:15 AM

The DA300 is a brilliant lens well worth the cost of repairing. I’ve had a new autofocus motor installed in both my DA200 & DA300

vievetrick · 10-13-2020, 05:07 AM

Originally posted by Jimlad

The DA300 is a brilliant lens well worth the cost of repairing. I’ve had a new autofocus motor installed in both my DA200 & DA300

Curious where and how much?

**JimS_256** · 10-13-2020, 11:03 AM

Originally posted by Adam

it's a good idea to regularly power up the lens to minimize the risk of a full failure.

That's a great suggestion!

After sitting for 6 or 8 months my DA300 autofocus (which previously had been fine) wouldn't work. I tried cleaning the contacts, moving the auto/manual switch, and also switching to live view. At first, in live view the focus would work intermittently but the more I used it the better it got. Eventually I switched back to the viewfinder and, again, at first, it only worked intermittently but eventually it started working reliably.

vievetrick · 10-13-2020, 04:39 PM - **1 Like**

THANK YOU ALL!! I gave it a try (converting to screw drive)with the help from Blacknigh965 video today. For me having the video made it so easy and even more having my camera do everything it showed in the video. I did it with my K5 and once done worked there and on the K3ii no problem. Again thanks everyone here for the help.

**microlight** · 10-14-2020, 06:45 AM - **1 Like**

Good job - congratulations!

**JimS_256** · 10-14-2020, 10:36 AM

Originally posted by vievetrick

THANK YOU ALL!! I gave it a try (converting to screw drive)with the help from Blacknigh965 video today. For me having the video made it so easy and even more having my camera do everything it showed in the video. I did it with my K5 and once done worked there and on the K3ii no problem. Again thanks everyone here for the help.

That's good to know. Mine's working at the moment but I have the feeling it may be on the way out...

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10-13-2020, 03:15 AM	#16
Jimlad Junior Member Join Date: Jan 2013 Location: Adelaide, South Autralia Posts: 38	The DA300 is a brilliant lens well worth the cost of repairing. I’ve had a new autofocus motor installed in both my DA200 & DA300

10-13-2020, 05:07 AM	#17
vievetrick Veteran Member Join Date: Sep 2006 Location: Easthampton - Massachusetts - USA Photos: Gallery Posts: 5,183 Original Poster	Originally posted by Jimlad The DA300 is a brilliant lens well worth the cost of repairing. I’ve had a new autofocus motor installed in both my DA200 & DA300 Curious where and how much?

10-13-2020, 11:03 AM	#18
JimS_256 Loyal Site Supporter Join Date: Nov 2013 Posts: 1,107	Originally posted by Adam it's a good idea to regularly power up the lens to minimize the risk of a full failure. That's a great suggestion! After sitting for 6 or 8 months my DA300 autofocus (which previously had been fine) wouldn't work. I tried cleaning the contacts, moving the auto/manual switch, and also switching to live view. At first, in live view the focus would work intermittently but the more I used it the better it got. Eventually I switched back to the viewfinder and, again, at first, it only worked intermittently but eventually it started working reliably.

10-13-2020, 04:39 PM - 1 Like	#19
vievetrick Veteran Member Join Date: Sep 2006 Location: Easthampton - Massachusetts - USA Photos: Gallery Posts: 5,183 Original Poster	THANK YOU ALL!! I gave it a try (converting to screw drive)with the help from Blacknigh965 video today. For me having the video made it so easy and even more having my camera do everything it showed in the video. I did it with my K5 and once done worked there and on the K3ii no problem. Again thanks everyone here for the help.

10-14-2020, 06:45 AM - 1 Like	#20
microlight Site Supporter Join Date: Sep 2011 Location: Hampshire, UK Posts: 2,129	Good job - congratulations!

10-14-2020, 10:36 AM	#21
JimS_256 Loyal Site Supporter Join Date: Nov 2013 Posts: 1,107	Originally posted by vievetrick THANK YOU ALL!! I gave it a try (converting to screw drive)with the help from Blacknigh965 video today. For me having the video made it so easy and even more having my camera do everything it showed in the video. I did it with my K5 and once done worked there and on the K3ii no problem. Again thanks everyone here for the help. That's good to know. Mine's working at the moment but I have the feeling it may be on the way out...