Problems with lens effects

[digitalx3d]

I played around with the new Lens Effects in Vray 2.0 today and couldn't figure out how to get a satisfying result. I'm rendering a small retail shop with some glass pendant lights. I thought maybe I could use Lens Effects to add a bit of bloom to the lights, but instead it made nearly every surface in the whole scene glow, and made other darker surfaces look blurred. I feel like I tried every combination of settings, but never got a result that was anywhere near usable. Does this render effect only work well in dark environments? Supposedly, it no longer matters what sort of color mapping you use. But I am using LWF. I also am using a VRayPhys camera with exposure settings as follows:
F#: 6.3
Shutter: 1/100
ISO: 100

Any suggestions?
Thanks!!

[digitalx3d]

The lens effect source image looks like this....

[voltron7]

Strange, I have not experienced this yet...Did you change any settings of the effect?
When I've tried it, I just turned it on and hit render and it looked good (to me at least.)

edit: oh, yeah, my effect source comes out like that. I just use the rgb image that is in the VFB...

Here was a test I did using an old benchmark scene...the affect with default settings, is very subtle...

[Guest]

I have the exact same problem, everything glows and it looks foggy. I was really excited about this but I cant seem to get it to work either.

[Dessano]

I am sorry for bring this post back but I have same issue lol

How the heck did you solve it?

[raymarcher]

Do be fair me too, I had some plays with it and I can't get good results. I should test it more profoundly.

[tammo]

Did you Clamp the Image?

[Dessano]

Here is the test. Its clearly bugged or I am doing something wrong. In the picture you can see frame buffer and max window. See the difference. In frame buffer its completly different.

[super gnu]

this same issue i believe has been flagged a number of times under different headings.. there is something odd about the way the lens effects source works. i noticed for instance that adjusting the clamp level changes the lens effect.. i need a clamped image, but it breaks lenseffects.. this should not happen according to vlado as the lens effects should always work on unclamped data.

however i cant see where it would get an unclamped source from if you are rendering with a clamp.

seems also related to the problems (hard to describe) where the lens effects source comes out completely overexposed. end result seems to be the lens effect becomes impossible to control, either doing a blur on everything or nothing.

to be honest id love to see a bit more control in lenseffects, so you can really pinpoint the brightness ranges you wish to effect. 2 sliders dont really cut it imho..!

[trixian]

The sliders should be sufficient if we only had an interactive way to adjust them and see the result. I find the update time (and the fact that the update function in max's effect dialogue is wonky and requires re-renders if you do something in the wrong order) horrendous. For a 2k image, the adjustment should be near instant on modern hardware. (This is most likely because of max and not vray, as it seems to just adhere to the rules).
I have played with realtime stuff rendered in "true float" hdr, where playing around with these kind of effects and other more complicated calculations are instant (although the effect pass is often rendered at a slightly lower rez).

[Macker]

I find that using the "shape" slider it seems to combat the fogginess. I usually set it at around 35, if I remember correctly? Try that.

[Svetlozar Draganov]

Here is the test. Its clearly bugged or I am doing something wrong. In the picture you can see frame buffer and max window. See the difference. In frame buffer its completly different.


[ATTACH=CONFIG]12420[/ATTACH]

The images look different because the gamma between both Frame Buffers is different.
Max frame buffer is using 2.2 gamma since Vray Frame Buffer is using 1.0 - if you click on sRGB button on VFB both results should be the same.

[Svetlozar Draganov]

I played around with the new Lens Effects in Vray 2.0 today and couldn't figure out how to get a satisfying result. I'm rendering a small retail shop with some glass pendant lights. I thought maybe I could use Lens Effects to add a bit of bloom to the lights, but instead it made nearly every surface in the whole scene glow, and made other darker surfaces look blurred. I feel like I tried every combination of settings, but never got a result that was anywhere near usable. Does this render effect only work well in dark environments? Supposedly, it no longer matters what sort of color mapping you use. But I am using LWF. I also am using a VRayPhys camera with exposure settings as follows:
F#: 6.3
Shutter: 1/100
ISO: 100

Any suggestions?
Thanks!!

It seams that the values that you have in Bloom options produce very strong effect on your image.
You can try to decrease the Weight and Size parameters and increase the Shape value.
If you still have difficulties with adjusting these settings please attach an example scene and we will try to help you.