Lens effect in 3.5 max 2017

[fael097]

before vray 3.5 I used to be able to work around lens effect, never got the result I wanted but it was useable. but now it seems impossible.

renders are not creating intensity masks, so all bloom effect does is to blur the whole image equally, glare effect does nothing, no matter what I set the parameters, and assigning object IDs to objects don't work also, objectID render element always show up black.

am I doing something very wrong, or this changed?

[Alex_M]

There might be many reasons why you may be missing the glows. Looking at your render, your filament is seems to be too dim for lens FX to kick in. Crank up the intensity. The filament should become almost white even though the color in the material/light is yellow/orange. Also, use IPR to interactively observe the results of your changes. If you've done what I mentioned so far and you still don't see any glow, you might have to check if your lens FX parameters are correct, especially Intensity. If Intensity is too high you won't see glow on low intensity objects. Try a value of 1.0-2.0.

Another very important point. Don't forget to disable Clamp output in Color Mapping as this will limit the intensity of the pixels in the render and Lens FX needs pixels with values higher than 1.0 in order to work.

Try these out and let me know if any of it worked.

[fael097]

hey, thanks for replying

a few things:
-object id mask wasn't working because the galss was blocking the filament ID from rendering. can't figure out how to make the object ID render through another object in order to make this work on a lamp.
-setting regular material IDs on max won't render anything on vrayMtlID element. couldn't find anywhere if there's a specific vray material ID and how to set it.
-intensity mask is erratic, I've set my filament light multiplier to 1000000000 (one billion) and it's intensity is still about the same as the white reflection on the metal part. a value of 0.5 will make everything bloom, and a mask value of 1 will make nothing bloom. no mask value in between will separate the filament from the rest of the scene, regardless of the light's intensity. (I've turned off clamp output). looks like the intensity of the white from the filament is always the same as of any white reflection even with the clamp output turned off.
-all of the above were for Bloom. still couldn't do anything to make glare show at all. scratching my head with this

[veldkoning]

Any progress on this issue? I have the same problem and it drives me crazy! Just made a quick post fix, but that doesn't cut it!

[fael097]

-apparently Glare doesn't work if you have "hardware accelerated" checked but rendered with cpu and not gpu.
-still don't know how to make object id show through glass.
-still don't know how to set vray mtlID
-intensity mask still doesn't work like it should.

plus another thing, I have an orange light, but bloom and glare will be always the color of the rendered object (white for bright lights) regardless of the color or temperature you set your light. this also used to work and now it doesn't. are these known bugs? because lens effect is useless right now.

UPDATE: I tested in ActiveShade mode with vray RT, and it worked as it should, really different from what I had. but then I closed the scene and tried again and it didn't work. it just blurs the image again. can't reproduce what I did to get it working.

[fael097]

edit: see below

[fael097]

ok, finally figured out. disabling "clamp output" will do NOTHING. you have to change the Mode to "None (don't apply anything)". just unchecking the clamp output checkbox doesn't do anything. hope this helps, will continue testing

[veldkoning]

That's interesting! I will try it out next time..

[fael097]

right! my only issue is how am I suppose to render a whole scene without clamp output? it looks terribly oversaturated

edit: so disabling clamp output did nothing because my color mapping was set to exponential. having it set to linear will do the trick. other types of color mapping have different results, not sure wich one is the best, i'll have to test more