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materiel:autofocus

Réglage autofocus

Site Anglais pour réaliser

Un autre tuto sur le Pentax Kx

  • Accès au mode DEBUG du K-x
    • Dézipper et copier le fichier sur la carte mémoire
    • Insérer la carte mémoire
    • Appuyer sur la touche [Av+/-] en mettent sous tension
    • Selection le premier élément de menu pour le Debug Mode changer “DIS” (Disable) en “EN” (Enable) en pressant la flêche droite . Puis appuyer sur OK pour être en mode “Debug ”!:-
    • Le trésor et la rédemption sont ici! Par défaut, tous les valeur sont à zéroeverything is at Zero values as seen in the above. Btw, don't change the “AF Test” and “AF Area Number”, keep them both at the default Zero 0. What I am interested is to adjust the central AF point only and to eliminate the Back Focusing tendency that I have encountered. To do the adjustment, just pull down to the “FocusCorr” Item to change the parameter..

Before doing the adjustment, I would give an important hint for how to use a PROPER TARGET for to check the AF! DON'T use any those 45 Degree AF Test Chart, NO MATTER it is the original “Nikon D70” one nor those variants that are copied from the idea of that chart! SIMPLY use a completely flat surface with good contrasty pattern on it under daylight (or artificial white light) as the target for AF adjustment. You can place the three target stacking one from the other in steps so that you can have more idea on the Front Focusing or Back Focusing during the focus adjustment. Like this setup, for example, focusing on the middle distance object in the centre of the staired targets:-

materiel/autofocus.txt · Dernière modification: 2020/11/04 20:55 (modification externe)