Canon Community

Blake1 · ‎08-09-2023

I recently bought a new lens, and it doesn’t seem to be focusing. The focus moves when I try to zoom in or out. When I use auto-focus, the lens focuses only when I’m zoomed out. When I'm zoomed in, it will only jitter back and forth.

Tronhard · ‎08-09-2023

Sadly, it is unlikely I shall get the opportunity to do so, but it is an interesting situation! I hope you have a great holiday. BTW, the post you referred to from the OP finally appeared - why the delay is beyond me...

cheers, TREVOR

The mark of good photographer is less what they hold in their hand, it's more what they hold in their head;
"All the variety, all the charm, all the beauty of life is made up of light and shadow", Leo Tolstoy;
"Skill in photography is acquired by practice and not by purchase" Percy W. Harris

deebatman316 · ‎08-09-2023

Well that's a good sign then. Hopefully ALL of the posts appear then without any problems.

-Demetrius
Bodies: EOS 5D Mark IV
Lenses: EF Trinity, EF 85mm F/1.8 USM
Retired Gear: EOS 40D, EF 50mm F/1.8 STM & EF 70-210mm F/4
Speedlites: 420EX, 470EX-AI, 550EX & 600EX II-RT

Tronhard · ‎08-09-2023

@BLAKE1

Since you have made inquiries about the 70-300 lens, I thought you might find this useful:
70-300 Canon Lenses In-Depth Analysis - Canon Community

However, I think it would be helpful to know what camera you are using, your focus mode (spot, area, etc.) and distance to the subjects you are trying to focus on. The issue may not lie with the lens.

cheers, TREVOR

The mark of good photographer is less what they hold in their hand, it's more what they hold in their head;
"All the variety, all the charm, all the beauty of life is made up of light and shadow", Leo Tolstoy;
"Skill in photography is acquired by practice and not by purchase" Percy W. Harris

Canon Community

Canon 75-300m Lens not focusing