completely realistic camera behaviour

[Phasma]

Hello

I dont know If this is the correct place to post this but I think that this would be a super nice feature to have and I would therefore request it now :-)

You might think that there already are a lot of "Physical correct" cameras out there and why would someone request another one? Let me explain

I am doing Large Format Photography as a "little" hobby. With those super cool cameras you have complete freedom to change everything in a photo including the "shift/tilt" effects. However these camera movements are not represented correctly in the corona or physical camera. See, you can "tilt" the lens OR the Film, and also you can do it in multiple axes. It is actually called swing (https://www.raylarose.com/words/large-format-view-camera-movements" on a Large Format Camera and it makes a huge difference if you swing the lens or the film. I dont have the option to do this in a 3D camera. If I use the tilt value in a 3D camera, the Scheimpflug Principle is not simulated. the DOF behaves as if the Planes would still be parallel.

These cameras are still mostly used in architectural photography like Corona, so I think that all of these effects should be possible with the Corona camera. It is nice that the bokeh rendering is now better adjustable, so please move one step further.

I tried it in a testscene from our production here.

http://eyedea3d.com/pictures/doppelhaus_03.jpg

I physically build a camera and used a 300mm lens - a single lens however, as lenses with groups are just too heavy to render.

http://eyedea3d.com/pictures/Fachkamera.jpg

the whole scene shines through the lens as caustics and creates a projection image on the back of the camera. as you can see, that a single Lens is not able to produce a good sharpness. It creates a non planar projection, so the corners are out of focus if the center is.

http://eyedea3d.com/pictures/fach_cam.gif

As you can see, focusing is possible, as well as lens swing AND the sharpness behaves correctly. Of course this is only possible using "Simple PathTracing". Rendertimes are crazy

http://eyedea3d.com/pictures/Doppelhaus_8x10_.jpg

It would be super nice, to have this build in correctly as it would make even these scheimpflug images possible.

[Nejc Kilar]

This sure looks interesting. Props for posting this.

[louisryko]

Amazing. I was recently wondering if this is possible.

Well done!

[Juraj]

Request would be for DOF simulation to respect plane alignment, it's odd that neither physical camera in Max respects this behavior.

It's the poor implementation of tilt/shift I think all three of them (Max native, Vray and Corona) fail at this.

[JViz]

This is some really good stuff there is the render that slow for one lens? I'm going to try it

[Phasma]

unfortunately, yes :-)

[Jpjapers]

I remember an old thread from a few years back now where people were building lenses in max to put infront of cameras and i was pretty shocked that they worked correctly (to an extent)