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Forum: Troubleshooting and Beginner Help 05-20-2016, 09:56 AM  
Pentax K1 / K3 Live View Depth of Field Preview
Posted By sdgreen
Replies: 12
Views: 5,764
See also my general reply.

I'm only interested in DoF, not exposure. I found out that the K3 does exactly what I need (almost). It maintains screen brightness in LV whilst showing true DoF. Not real time as for Canon, but good enough.

As I said, the K5 doesn't do this : the screen darkens making DoF preview not very useful at the apertures I use (f8 - f16)

This excellent for me as it's reasonable to assume the K1 would also have this feature.

The K3 manual doesn't mention this really important (for me) feature. Incidentally, I noticed the K3 review on this site also mentions the brevity of the K3 instructions (as compared to the K5)

NB to clarify when I said real time , what I mean is that you can see the actual change in DoF on screen as you alter the aperture. Otherwise (Pentax) you need to activate the preview button each time the aperture is changed to view the DoF change. I should have made that clear. As I said, definitely good enough
Forum: Troubleshooting and Beginner Help 05-19-2016, 10:17 AM  
Pentax K1 / K3 Live View Depth of Field Preview
Posted By sdgreen
Replies: 12
Views: 5,764
I was a little confused after looking at all the answers, so the only way was to go into a shop & play with a K3.

A K3 in live view definitely keeps the lcd screen at set brightness when the preview button is activated - whatever the aperture. It doesn't darken in the same way as the viewfinder does. I assume the camera automatically brightens the screen to compensate. This makes it genuinely useful for viewing depth of field

This is a change from the K5. Here the LV screen darkens when the preview button is activated, so even though it shows DoF it's too dark to be useful as aperture gets smaller.

It's not quite as good as Canon's implementation which actually shows the DoF alter on the lcd as the f no is changed (with the K3 if the aperture is changed the preview button must be pressed again to view the DoF change) but it's good enough for my purposes.

I'm suprised the K3 instructions don't mention this as it's a very very useful feature.

On that note, I find the K3 / K1 manuals to be briefer than the K5 - definitely not as helpful.

Thanks to everyone who replied on this

---------- Post added 05-19-16 at 06:18 PM ----------

I would assume the K1 would also have this feature
Forum: Troubleshooting and Beginner Help 05-10-2016, 02:22 PM  
Pentax K1 / K3 Live View Depth of Field Preview
Posted By sdgreen
Replies: 12
Views: 5,764
I don't get real time exposure preview on the K5 in manual or Av modes. I take it that the K3/K1 is different?

---------- Post added 05-10-16 at 10:26 PM ----------


This is what I want from the live view function..to see the depth of field but with the screen brightness remaining the same. The K5 does not do this. I take it from this that the K3 (& probably the K1) is different. But are you saying that it doesn't do it every time..& that you're not sure why?
Forum: Troubleshooting and Beginner Help 05-10-2016, 10:47 AM  
Pentax K1 / K3 Live View Depth of Field Preview
Posted By sdgreen
Replies: 12
Views: 5,764
Does anyone know what happens if you operate the depth of field preview slider when in live view ( set for OPTICAL Preview not digital) on the K3 & K1?

With the K5 , the live view behaves like the optical viewfinder..it goes dark as the live view adjusts to the aperture. Unfortunately, just like the VF, it's too dark to effectively judge the DoF at small/med apertures. I was wondering if this the same with the K1 / K3.

What I'm hoping for is the way live view is implemented in Canon bodies. These show the true DoF but, crucially, it shows at the brightest aperture. So it's possible to actually see what's in focus before taking the shot. It also shows the DoF change as the fstop is changed in real time. I don't know how this is done but it's genuinely useful.

Can anyone tell me if live view's been changed from the K5 to the K3 / K1 so it's possible to see true DoF with the live view still visible at full aperture?

It's the K1 I'm really interested in but I would've thought it'd be the same as with the K3.

Thanks
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