VFX test with 5DmkII

its explosion from nowhere ? Would be better to put some box or something which would explode,also its a bit transparent on last frames ?
I dont know what they do on the set but good idea is also to get some perfumes and do a bit fire flames using lighter just to see how bright fire should be for the scene.You could then match colours with cgi flames.
 
You completly right, it's an explosion from nowhere, the goal of this little test was to be sure that i can do a quite good composite in a 5d image, be sure that all the default of the 5D (jello effect, potential compression artefact...etc...) doesn't affect the tracking detection. Also, the dolly move is not perfect because i just use what i have close to me, a flight case ;). This kind of cgi will be use for my next project, called "Innocence", for here for sure (i hope) explosion will come from somewhere ;).
Thanks for your advice about the grading i will do my best to adjust this for the final project.
 
I'd recommend looking into is adding a bit more transparancy to the explosion. You've comped it too solid, it would look more realistic if the layers on the edges at least were slightly transparent. Layer up the explosion a bit with some gradient transparancy. You also might want to try adding a bit more of an additive flash, cast some light on the scene for a frame or two. You're also missing the explosion reflection in the floor.
 
The MAJOR problem with this test is the motion of the camera, not the camera itself.

Rocking side to side does NOT look like the effect of an explosive blast.

The physics of a blast wave should have the force coming directly at the camera. I don't know how rough you want to be on it, and maybe you can enhance more in after effects. But, what that did was just off.
 
both of you are right, a little transparency will help the composite for sure. For the final shot we will have on the set the lightning to give the good reflection on the floor and all object affected by the illumination of the explosion. We will also use physical "debris" to create a good interaction between the "cgi explosion" and the set.

Polfilmblog, the camera shake was not an aspect i think about, but you're right the orientation of the blast must give the orientation of the camera mouvement.

Thanks a lot for your advice.
 
Great compositing... the explosion tracks well.

The scale of the fireball looks wrong though.

It looks like you took a large explosion and made it small to fit into the room.

But as this is a test shot and I give it an "A".
 
I am sure you are aware of this so sorry if I am saying something obvious but a little color correction on the flame would also help.
 
Thanks for your comments advices...As you imagine this test is only a test, and you're advices are a good thing for me to adjust this kind of sfx on the final movies.
 
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