Setting the preview

davedyer · 02-22-2018, 12:22 PM - **1 Like**

On page 108 of the K 70 pdf manual it states that the Optical Preview may be activated to "check the depth of field with the viewfinder". When I attempt to do this I see nothing in the view to indicate the depth of field. What, please, should I be seeing? Thanks. The K 70 is a great gizmo and I am more than pleased with its capabilities.

**ProfessorBuzz** · 02-22-2018, 12:26 PM - **1 Like**

Perhaps you are looking for a digital number when you should be looking through the stopped down, dimmer image to see what is and is not in focus?

**Bob 256** · 02-22-2018, 01:12 PM - **1 Like**

Also, if you're in conditions where the light is low and auto-exposure calls for a wide open lens or you have manually set the lens to a wide or nearly wide open setting, you won't see much change through the viewfinder on preview. Go outside on a sunny day, and select an f value like f16 or thereabouts and try the preview. You should note a big improvement in the range of in-focus objects when the camera previews (though a considerably dimmer view as ProfessorBuzz mentioned).

Adam · 02-22-2018, 01:36 PM - **1 Like**

Originally posted by davedyer

On page 108 of the K 70 pdf manual it states that the Optical Preview may be activated to "check the depth of field with the viewfinder". When I attempt to do this I see nothing in the view to indicate the depth of field. What, please, should I be seeing? Thanks. The K 70 is a great gizmo and I am more than pleased with its capabilities.

You just have to look through the viewfinder

If the aperture is wide, it won't change by much.

Adam
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02-22-2018, 12:22 PM - 1 Like	#1
davedyer New Member Join Date: May 2017 Location: Lawrence, Kansas Posts: 22	Setting the preview On page 108 of the K 70 pdf manual it states that the Optical Preview may be activated to "check the depth of field with the viewfinder". When I attempt to do this I see nothing in the view to indicate the depth of field. What, please, should I be seeing? Thanks. The K 70 is a great gizmo and I am more than pleased with its capabilities.

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02-22-2018, 12:26 PM - 1 Like	#2
ProfessorBuzz Loyal Site Supporter Join Date: Feb 2018 Posts: 1,903	Perhaps you are looking for a digital number when you should be looking through the stopped down, dimmer image to see what is and is not in focus?

02-22-2018, 01:12 PM - 1 Like	#3
Bob 256 Site Supporter Join Date: Jun 2008 Location: Idaho Photos: Gallery Posts: 2,375	Also, if you're in conditions where the light is low and auto-exposure calls for a wide open lens or you have manually set the lens to a wide or nearly wide open setting, you won't see much change through the viewfinder on preview. Go outside on a sunny day, and select an f value like f16 or thereabouts and try the preview. You should note a big improvement in the range of in-focus objects when the camera previews (though a considerably dimmer view as ProfessorBuzz mentioned).

02-22-2018, 01:36 PM - 1 Like	#4
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,595	Originally posted by davedyer On page 108 of the K 70 pdf manual it states that the Optical Preview may be activated to "check the depth of field with the viewfinder". When I attempt to do this I see nothing in the view to indicate the depth of field. What, please, should I be seeing? Thanks. The K 70 is a great gizmo and I am more than pleased with its capabilities. You just have to look through the viewfinder If the aperture is wide, it won't change by much. Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating or purchasing one of our Pentax eBooks. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers: