[GFE]

Hi all,
I'm opening this post because I'm having trouble focusing with this lens (which I also think is great!).

But in AF-S mode, if I only use one AF point, most of the time the autofocus slips (small jerky movements) and cannot find the point for very long seconds (sometimes even failure ).

I find it frustrating because this difficulty made me miss some images that I would have liked to capture ... then which flew away!

Do you have the same problem ?

To overcome this, I have a few solutions:
- if large subject, AF 9 points, it matches every time
- Otherwise, having to be in AFC three quarters of the time

But, for each solution, autofocus isn't as accurate as AFS + single AF point.

other ideas to have better focus?

have a good day !

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Bonjour à tous,
J'ouvre ce post parce que j'ai des difficultés de mise au point avec cet objectif (que je trouve par ailleurs génial !).

Mais en mode AF-S, si je n'utilise qu'un seul collimateur AF, une fois sur deux l'autofocus patine (petits mouvements saccadés) et n'arrive pas à trouver le point avant de très longues secondes (voire parfois échec).

Je trouve ça frustrant car cette difficulté m'a fait rater quelques images que j'aurais aimé capturer... puis qui se sont envolées !

Avez vous le même problème ?

Pour y pallier, j'ai des parades :
- si sujet volumineux, AF 9 collimateurs, ça match à chaque fois
- Sinon, obligé d'être en AFC les trois quarts du temps mais la qualité de la mise au point n'est pas aussi parfaite

d'autres idées ?

bonne journée !

[aslyfox]

Welcome to the forums

You will find friendly members and lot of knowledge here

Unfortunately I cannot help with your specific question

[BarryE]

Hi GFE, personally I use single point focus all the time - for static subjects. I've never been convinced a single point accurately focusses exactly where I want, so with static subjects I have time to check. I've not noticed the DFA 24-70, being any different from other lenses. So for moving subjects I always use the 9 pt focus option and accept it will miss sometimes. I'm guessing the single point being so small is likely to be influenced by many different lighting factors, that will create inconsistencies.

I've come to the conclusion that cameras are incapable of reading my mind, so don't assume they can and therefore double check when I can, or accept misses.

[aslyfox]

have you considered getting the Ebook for the K 1/ K 1 II

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[GFE]

Hi GFE, personally I use single point focus all the time - for static subjects. I've never been convinced a single point accurately focusses exactly where I want, so with static subjects I have time to check. I've not noticed the DFA 24-70, being any different from other lenses. So for moving subjects I always use the 9 pt focus option and accept it will miss sometimes. I'm guessing the single point being so small is likely to be influenced by many different lighting factors, that will create inconsistencies.

I've come to the conclusion that cameras are incapable of reading my mind, so don't assume they can and therefore double check when I can, or accept misses.

Thanks for your response, that prove that I use quite a good practice... I guess. But with experience the results will probably go better !