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DAZ Depth of Field Settings- A General Starting Point?
Posted: 22 March 2013 01:23 PM   [ Ignore ]
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I’ve got links galore on DOF (depth of field) thanks to Jaderail (and others) so far as how the settings work, etc- and that contest thread, etc- http://www.daz3d.com/forums/viewthread/5084/

but I was struggling to put it together because of the organization of it. People asking questions made the information jump around too much for me to grasp it.

I am maybe just missing it, but the basic concept of getting to the final render pzzzzt’d by me. The render settings are very helpful   http://www.daz3d.com/forums/viewthread/5084/#63872  but I’m not sure how to use the cameras to get to the final render smile 

Can you see if I’ve got the concept/ how-to correct so far?

1 First, DOF settings are in the camera setting, and it was mentioned to use a second camera to see the camera using the DOF- is that correct? Let’s call that second camera Camera 2, and the first with the depth of field the DOF camera.

2.  So you use the DOF camera to see the results when you are spot rendering? And Camera 2 to see where the lines are which indicate that square plane? (which from what I’ve read, you put at the tip of the character’s nose to have closeups with the background blurred out) (newbies see this for a great image on how DOF is setup-)
http://www.daz3d.com/forums/viewthread/5084/P60/#66500

3. Are there any good settings for us newbies to start experimenting with- for these general situations-
(and what I’ve found in the threads is listed, just like your opinions/usages, which I know are just general starting points)

a.closeup of face with background blurred out - Jaderails example (really nice!)
http://www.daz3d.com/forums/viewthread/5084/#64218
settings:
focal length 65
focal distance 69.31
f stop 40

b. blurring out the corners/sides of the render, such as vegetation, say, leaves or branches, while having the objects in the scene in focus? The objects in the scene, let’s say for clarification, would be a person standing there full length with only two or three feet of floor showing? (in other words, the floor is not going to have much emphasis.)

c. using same scenario, person and foreground in focus, background out of focus? (say, the forest)

I have not found information on b and c, so far as settings to get me in the ballpark, and I must not be using the cameras right (the basics) as I’m literally not seeing any change whatsoever when spot rendering- so after trying it for an hour I’m admitting the “I’m stuck” factor. Thanks in advance.

Cathie

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Posted: 22 March 2013 01:43 PM   [ Ignore ]   [ # 1 ]
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You have 1 and 2 correct for the most part. Keep in mind that with DOF on, there are two planes…one for the front (everything in front of this plane will be more out of focus) and one for the back (everything behind this plane will be more out of focus).

Different people might have different advice about point 3…I’d suggest you start with the default value for focal length (65) and f/stop (22) and adjust focal distance. Once you’re familiar with how focal distance works, then move on to f/stop, and finally focal length.

For 3b…I don’t think this is really possible with depth of field, unless the elements at the edges are closer to the camera than the main subject (or further from it). You could do it in postwork, though.

For 3c, you’d just decrease focal distance in order to move that front plane away from the person’s nose until it reaches the foreground objects. And you’ll probably have to increase your f/stop (expanding the area between the front and rear DOF plane) to keep the person in focus. There are other methods which would involve adjusting the focal length.

Personally I prefer to do full test renders (if you need more speed, adjust shading rate and/or turn off the lights, or hide the hair) instead of spot renders. I like to see the full frame.

I’m not an expert in depth of field, but hopefully this is enough to move you past being stuck! Let me know if you have any questions.

Edited to add: one more important thing…the position of the camera has a huge impact on how DOF works, which is why you can’t really plug in a set of values taken from one scene and expect the same results in a different scene.

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Posted: 22 March 2013 04:05 PM   [ Ignore ]   [ # 2 ]
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If you Load Both Cameras as you have been doing and LOOK real close there is a FOCUS mark on the DOF depth line (the long one from the center of the DOF camera). As you change The Depth (Spread the Planes) it should Show as an X on that line. That is what you place on your main Figure to get the fully in Focus for it part. Then as Scott points out Items Before the Front Plane and up to the X will have the Proper DOF and items behind the Rear Plane and behind the X will also have the proper DOF.

EDIT: Here it is….

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Posted: 22 March 2013 04:22 PM   [ Ignore ]   [ # 3 ]
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F-stop the lower the numbers the more blurry and higher the number the less blurry before and betond the DOF focal point Jad explains above.

Also the lower the f-stop the more blurry the more you need to increase Pixel Samples X and Y in the Advanced Render settings as explained in post two of your first link above.

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Posted: 22 March 2013 06:36 PM   [ Ignore ]   [ # 4 ]
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Scott-Livingston - 22 March 2013 01:43 PM

Personally I prefer to do full test renders (if you need more speed, adjust shading rate and/or turn off the lights, or hide the hair) instead of spot renders. I like to see the full frame.

Ditto.  It lets you have a look at the total composition of the scene (and what is casting shadows on what, etc.  Spot renders are great if you’re really concentrating on tweaking a material setting or checking a possible geometry error.  Again, though, he’s right; go with what works for you to get your best results.


The center between the DOF planes is a white ball.  I usually try to “hide” that right in the center of the intended focus area to bring the other two planes more or less where I want them with the focal length slider.  Then I use fstop from there.

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Posted: 22 March 2013 08:26 PM   [ Ignore ]   [ # 5 ]
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Here’s something they don’t tell you anywhere about the DS Camera. It’s actually a Large Format Camera and the default setting of F-22 is actually closer to a minimum (smallest focal range) realistic focal range with F-32 or F-45 being more the median in terms of realistic photographic depth of field.

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Posted: 22 March 2013 09:38 PM   [ Ignore ]   [ # 6 ]
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Thanks folks- just got back in the door from the barn(setting it up for severe weather tomorrow in case have to bring the horses in) and will read and apply, and ask if stuck. As usual, you are so very helpful, thank you!  smile  smile  smile
Cathie

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Posted: 22 March 2013 09:50 PM   [ Ignore ]   [ # 7 ]
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Thanks everyone for your the good information. I’ve tried playing with those settings and can never seem to get the planes where I want them. Is it possible to just grab the plane with the mouse and move them? Perhaps if I use a short cut key while clicking? (I can always hope for something brilliant like that. smile )

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Posted: 22 March 2013 10:31 PM   [ Ignore ]   [ # 8 ]
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Sikeus- I had to giggle when I read your post- I am so used to clicking and dragging objects, there have been MANY times when I find myself clicking and dragging on an object and then thought, “Shoot, I have to either click on that Universal Tool cube or get over in the Parameters tab sliders, you idiot!” I’m just so used to click and drag that I forget the viewing pane doesn’t work that way. Wouldn’t it be nice to have that for DOF and the objects?!!  HINT HINT FOR THE NEXT EDITION OF THE STUDIO!

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Posted: 22 March 2013 10:55 PM   [ Ignore ]   [ # 9 ]
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smile I have to admit I hoped someone at DAZ would catch the hint, but I hear the DAZ people don’t read the forums….

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Posted: 22 March 2013 11:08 PM   [ Ignore ]   [ # 10 ]
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A la contrare- if I spelled that right, lol- in the Meet The Daz Team Youtube video, the CEO said he monitors the forums. So there’s hope!

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Posted: 23 March 2013 12:00 AM   [ Ignore ]   [ # 11 ]
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Novica - 22 March 2013 11:08 PM

A la contrare- if I spelled that right, lol- in the Meet The Daz Team Youtube video, the CEO said he monitors the forums. So there’s hope!

BAW!! HA! HA! HA!! Um… from time to time and at random. I’m a CV and do not mind saying this. The Forums are us Users 99.9999999999999% of the time.

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Posted: 23 March 2013 01:12 AM   [ Ignore ]   [ # 12 ]
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But Jaderail…. I thought YOU were the CEO…..(you should be!)
Cathie

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Posted: 23 March 2013 06:56 AM   [ Ignore ]   [ # 13 ]
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sikeus - 22 March 2013 09:50 PM

Thanks everyone for your the good information. I’ve tried playing with those settings and can never seem to get the planes where I want them. Is it possible to just grab the plane with the mouse and move them? Perhaps if I use a short cut key while clicking? (I can always hope for something brilliant like that. smile )

Seriously…No disrespect but this has got to be the most easiest things to set up in Daz Studio. Use the perspective camera to view the DOF Panes and Focal point…You even have a toggle to turn on the DOF planes so you can see then when viewing through the camera itself, Back and front. Sorry I know you are new but seriosuly this is one of the easier things to set up in Daz Studio.

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Posted: 23 March 2013 11:32 AM   [ Ignore ]   [ # 14 ]
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Sorry about that above, having a bad day again.

What I am trying to say without belittleing anyone (hich was not my intention above) is that setting up where your focus point is, is really easy. Select your rendering camera in the Scene Pane then use the Perspective, Top and load another camera to look at where the focal point is, what Jaderial showed you, you should not have any trouble setting up that aspect of DOF.

Getting the F-stop set up is another matter but that only relates to how much blur takes place before and beyond the DOF planes but this also depends on how close other objects are to the main subject. The further or closer they are the more blurred they get. You can offset this by choosing a high F-stop Value or by using a longer lens (Focal Length)camera to make the space between the DOF planes wider. lowering the camera lens will make the space between the DOF planes smaller.

Focal distance is for placing the DOF Focal point

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Posted: 23 March 2013 04:17 PM   [ Ignore ]   [ # 15 ]
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Szark, don’t worry about it! I just haven’t replied because we are dealing with tornadic thunderstorms all day today and I have had to monitor supercells, etc in case I was needed at the ranch. I am busy doing other things besides that, so just had not read the forum or been online. I know that you meant it to be encouraging, and if I have problems, you’ll steer me the right way. smile  I’ve done “dumb” things before, Scott-Livingston can attest to that, as when I was reading his geometry shell tutorial and was trying to work in the content tab instead of (what was CLEARLY explained) the surfaces tab. So wouldn’t be the first time I did a “duh”, but the important thing is I’m a determined “duh-er” and don’t give up easily.

Cathie

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