Fish eyed lense

[jin'a]

Hi peeps, just wondering if Lightwave has the ability of a fish eyed lense? and if so do I activate it?

[trison]

Open the camera options panel and Lower the zoom factor. I usually drop down the menu and go by lens focal length. 15mm (or a zoom factor of 2) gives a slightly warped image. but you can go even lower depending on how extreme you want the effect.

[kevman3d]

There's also a very cool pixel filter called 'Juans special projection' that lets you render fisheye, spherical, cyclindrically and more... Very cool for rendering a scene as a spherical image map for reflections...

You can find the link by doing a search on Flay.

[thekho]

Hi jin. Someone from student saw my work and asked me about how did i do the 'fisheye' effect last week. So, I showed him about how i done the fisheye effects which is really easy to set up.

I thought you maybe want see my tutorial see below.

Hope it help :)

[richpr]

Similar effects appear if you place the camera very close to your object and use the zoom function to zoom out... get closer and zoom out... and repeat... Gives some nice angles...

Oops. like Trison said, more or less... I read that tip in Inside Lightwave 7 as well... Proposed as making certain objects look more dramatic etc. Like, take a low camera position, looking slightly up at your object, with the zoom inverted...

I like the idea of kinda making a real lense in front of the camera as well, but this might be trickier to focus etc., but I guess it would work (...file under experiments ;))

[stib]

I've been a professional camera operator for a lot longer than I've been a proffessional 3d nerd, so am I missing something here?

There's nothing "special" about a fisheye lens, it's just a very wide angle lens. For 35mm film it's anyfing 15mm or less. By default the "film size" in LW is 35mm (called aperture height, and displayed in inches - WTF?) so you'd use <15mm for a fisheye in LW (that's zoom factor 2 or less).

But LW lets you go right down to a fraction of a millimetre lens so that you can get practically 180 degree views.

So, to do a fisheye select zoom factor on your camera's properties, set it as low as you want (it won't do zero though) and blast away - easy peasy.

[riki]

Some cool FX but I still haven't seen anything that looks like a true fish-eye. I often wonder about the camera focal length, an what sort of standard it's based upon.

[stib]

working late on a friday arvo aren't you, Riki?

The lens focal length, f stop etc are all based on some optical formulae that I remember someone trying to teach me a long time ago at Uni. You could probably find them somewhere on the interneck if you looked. How much LW matches real camera lenses I don't know.

If you want a real fish eye effect, you might want to add some vignetting in post - that's where the image gets darker towards the edges. Even the best fish eye lenses do this to some degree. Well all lenses do it actually, but most times you can't notice it.

[riki]

Yeah Yeah working back late. Still haven't had lunch, damn must be time :)

I was just wonderring becuase when I was at Uni we'd use lenses with different focal lenghts on the enlargers in the darkroom, depening out the film format, if you were using 35mm or 645. I can't actually remember the exact details, but it started to make was wonder what sort of camera the LW version was based on.

[jin'a]

Thanks guys, I'll post some renders in the wip section oncei got the anim sorted...oh yeah thats a good point! Another thins i've seen in those old shody movies is that technique were the subject in the shot seems to get closer to the cammera while the background receeds? How do you do that!

[riki]

When you use a Zoom Lense it flattens out the image plain. So that the distant background and the mid-ground start to look very 2D with not much DOF.

So I guess if the camera moved closer to the main object of focus, and you decreased the Zoom angle, gradually as you moved in.

It would have the effect of bring the focal point in closer while the BG receeds.

Simple huh :)

[jin'a]

theoretically! :p

I'll give it a go, thanks

[stib]

I shot a short film all on a 6mm lens (16mm film so about a 13 or 14mm lens in LW speak). It meant that if you were a metre or two away you'd look tiny but if you stepped up close to the lens you'd suddenly get very big. Like a hip hop film clip. Short lenses accentuate perspective, long lenses decrease it, making everything seem close together.

[inakito]

u can also try using advance camera, it simply great all you can do with it