A6300 55-210 lens lose MF focus in timelaps app

[Willem-A6300]

 

Please help...

Hi , I have Sony A6300 with 55-210mm lens,  loses the manual focuspoint after I switch over to the Sony built in Timelaps app.

After a few clear pictures in the timelaps app, it loses focus. I tries time and time againg.

I must say this object is very faint in the live viewer it is nearly not visible. I dont know if that has something to do with it? That the software deceides it cannot us MF anymore?

I have shot more clear Astro objects where there was no focus loss even after 150 picture after another in timelaps.  So normally whith brigter objects.

I am using a startracker AZ-GTI to make long exposure possible.

Bad picture.

Welcome, dear visitor! As registered member you'd see an image here…

Simply register for free here – We are always happy to welcome new members!

This picture her under is the last picture that had still focus.  In the middel is the M13 starcluster. I need lots of pictures to stack together to get a clear icture of the starclkuster.

 

 

Here is an image of M101 that I made with the same timelapse app and the same lens, using  100 shots of 30 seconds at 210mm. Here no problem with losing manual focus.