Diopter Adjustment

[chuck_pere]

<p>Want to make sure my thinking on diopters is correct. Adjustment of the diopter cannot shift the point of sharpest focus seen through the viewfinder. It can only cause that point to become softer or sharper. In other words a misadjusted diopter can't screwup the focus. My Pentax 67II is the first camera I've used with a diopter adjustment and I want to make sure I'm not messing up my focusing.</p>

[q.g._de_bakker]

<p>Absolutely correct.<br>

A viewfinder diopter adjustment has an influence on how you see the viewfinder image.<br>

Not on whether that image is sharp or not.</p>

[john_stockdale2]

<p>Try focusing on something at infinity that has a lot of detail, like a large bare tree or electricity pylon. Then adjust the diopter back and forth until it's maximally sharp. That's the correct adjustment. It's probably also the spot where in-frame info is clearest, such as frame lines, metering lines etc.</p>

<p>If you are young, this is probably not critical. If you're as old as I am, it most definitely is.</p>

[q.g._de_bakker]

<p>It's recommended (usually), but what's more, much easier, to take the lens off the camera, and adjust the diopter looking at whatever line, focusing aid or even bit of dust there is on the screen.</p>

[sumo_kun]

<p>Yes, the best way to adjust diopter is just to look at the metering LCD or the lines/markings on the focus screen and try to get them as sharp as possible.</p>

[chuck_pere]

<p>Thanks for the information. I'll try adjusting it with the lens removed. </p>