Fuji 35 f1.4 AF Loop issue

[mynameismo]

Hello,

Has anyone experienced issues with the 35mm f1.4 on hot days ?

 

For the third time, my lens went crazy, and got stuck in an autofocus loop.

 

Sometimes when the lens can't find lock focus, my X-T1 throws a message saying "Please turn off and on your camera".

 

When I turn off and on again, this lens starts immediately to focus to max distance, then focus to minimum distance and the error pops again. Sometimes I even ear grinding gears sounds ... which is scary !

 

It only appears on hots days. When I leave the lens alone for 1/2 an hour, it starts working again.

 

Fuji wants me to send the lens AND the camera, but I also have the 10-24 and the 50-140, and never experienced any of this.

 

Regards,

[Begi Nabara]

I've been using my 35 1.4 a lot recently here in southern France it's been 32-36 degrees C.

No problems on my XPro1. Do you have the latest firmware for both camera and lens?

[frankinfuji]

I use my 35mm f1.4 in Bangkok (35-40'C/100'F) and not had this issue. 

 

And with the latest firmware v4 for the X-E2 body the lens does much less hunting when using the center focus points.

[Aswald]

No problems on mine. Pro1, Pro2, T1. All ok.

 

Have you tried cleaning the contacts with some alcohol?

[mynameismo]

Hello,

 

All firmwares are up to date. I love the lens but I'll call Fuji for RMA / exchange.

Having a lens acting crazy is painful when you need it and miss shots.

 

This guy had the same issue http://www.fuji-x-forum.com/topic/3771-ive-got-a-lense-problemlatest-16mm35-20/?do=findComment&comment=32999

 

Regards.

Edited September 9, 2016 by mynameismo

[Sluw]

Strange, definitely return it for exchange, of course that's not normal. Never had that issue in temperatures up to 40 C