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Message: <blockquote data-quote="eurotrash" data-source="post: 143736" data-attributes="member: 9237">Re: The DOF bottonOk here's the deal with that button after about 2 months of researching the same question..you are ALWAYS looking at your lenses MAX APERTURE, ALL THE TIME through the viewfinder. Only when the camera takes the photo will it stop the aperture on the lens down to your chosen amount, then write the image taken to the card. Problem is, when that shutter curtain closes, you see pitch black through your viewfinder.So this is kind of a halfway resolution to the problem. By using this method you can 'preview' what kind of DOF you'll get out of your picture.So, if you have say, a f/1.8 lens and you open it up to f/1.8 and press the dof button, you'll see no change. It might get a little darker, but there will be no change in the dof at all. Selecting f/8 you will see a darker view and more of your image will be in the plane of focus. It's kind of tricky to see the changes when the viewfinder is dark like that, but once you get used to the darkness, you can easily tell the differences of large changes in aperture. A change of 1.8 to maybe f/4 won't be THAT noticeable, but certainly you'll see 1.8 to something like f/5.6 or f/8. Now, if you're saying that you literally see no change from 1.4 to f/16, there's a problem with your camera. Or, your eyes <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite7" alt=":p" title="Stick out tongue    :p" loading="lazy" data-shortname=":p" />I hope that helps, I struggled with that as well!</blockquote>

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