[keithg]

after a few renders and blurryness i raised the fstop to 18 and it is still blurry
the camera is only ten units away from the blurry objects and units are set to centimeters
Do i need to crank it up even more? or do i need to render longer?


image

[deesee]

Search for Depth of Field topics in the forum. I think this is the problem.

BTW, I noticed your're running XP 64bit Pro. How is that working for you? Any driver issues? Problems?

[keithg]

screenshot

[keithg]

hi deesee, thanx for the quick reply.
i have done a search, and read through most threads about this topic
I am going to crank up the fstop to about 40 and see if that works.
I have done a lot of renders in another scene where the front of a house is about 3 times as far away as these objects are in the image that i posted, and i had similar fstop values ( 18-20 )
the only reason i posted is because i had the same fstop settings as the other scene and this scene is blurry
I know there are dozens of threads about this, but i didnt see any similar to my problem
Why would different scenes and similar fstop settings create different blurriness?
Different scene similar fstop settings

Edit
yes i had a little trouble installing Maxwell and getting it to register
For some time i could render a scene, but i was not able to upload any type of image, but now all is good as far as the issues that i had.

[dzowada]

I agree that this looks like a DOF issue, but is there any chance that your camera is moving and this is motion blur?

Just a thought.

Dan

[dzowada]

Even more likely, scale issues.

[keithg]

Dzowada,
The camera isnt moving at all. Yes i guess this could be a scale issue now that you mention it.
My prefeernces are set to centimeters, and as you can see in the screen shot, the table is about 11 centimeters square, and the camera is at about ten centimeters from the objects on the table. The room is approx 46x46 units (bye the way, does each unit repersent one unit?)
If i have my scene scale set to centimeters, and the room is 46x46 units on the grid, is the room scale too small? How big do you model your rooms according to the grid if the scene is set to centimeters? I am working in Maya 6.5 (i have 7 but waiting for mayall 7 pluggin )

[dzowada]

11 cm square does seem very very small. Unless I'm mistaken, thats about 4 1/4 inches? Also, I dont think that Maxwell cares what your settings in Maya are just so long as you set the "scene scale" properly before you render. (I use 3Ds MAX so maybe the plug-in is diffrent.)

Maxwell uses 1 meter as 1 "unit" therefore:
The default scene scale of 0.01 is telling maxwell that 1 "unit" is 1 cm or 100 units = 1 meter.

If you dont want to change your model you can test this by changing the "scene scale" to 0.1 which makes your 4.25" table 42.5"

Also note when you change the scale of the "world" you also change how bright the emitter material is.

Hope it helps.
Dan

[dzowada]

On your screen shot I just noticed "distance from camera = 100" if that is where the camera focuses we just found the problem. Change it to 10 (the distance to the subject)...

But then I use 3Ds Max and "target" cameras so I can see where the camera focus is.

[keithg]

ok i will scale my whole scene up, and see if that helps.
also, the screenshot i gace says 10 not 100, its a lil hard to read

[keithg]

or should i set settings to meters, and scale the room so the table is at one meter? 3 feet?

[dzowada]

If you do set maya units to 1 meter don't forget to set the "scene scale" in Maxwell to 1.0 (1 unit = 1 meter)

[dzowada]

I am assuming you are using "Maxwell" cameras rather then the standard Maya cameras.

Maxwell cameras are a MUST.

Try a "target" camera instead of a "free" camera so you can SEE where the focus is centered rather then typing in a distance from camera setting.

[keithg]

Dzowada; yes i am using a maxwell camera created from the mayall shelf , but theres 2 things that you said that concern me, one is that when i do create a maxwell camera, there is no "aim" point its jsut a camera, and the other is that the version of Mayall pluggin i am using ( the latest ) doesnt show a conversion tab like the older version did. This has been discussed in other threads, and I have read that if i change the scale frm meters to centimeters, or vice versa, then Mayall automatically changes the conversion factor you are talking about.
I dont know if this is true or not, but alls i can say is that i have no aim point with a maxwell camera, and i have no conversion tab in the attribute editor for the camera,like in the older version

[dzowada]

Maybe someone from the Maya side can answer this better. my 3Ds Max plug-in gives me two Maxwell cameras on my menus, "Maxwell free" and "Maxwell target". I hope the Maya Plug-in would have the same.

Sorry I could'nt be more help.

Dan