water rendering with arnold GPU

i am starting to look into water effecst shading, this 1st simualtion with Houdini solvers. the foam is a little over-the-top. but i think the shading itself start to come together. with the new Arnold GPU updates its getting really fast., specifically when i am using Arnold Operators.

i’ve created underwater bubbles in extra simulation to make the side view nicer.

all this above was done in Houdini and regular Anrold htoA plug in.

here i am testing the scene in Gaffer, the IPR is quite fast in here. the next thing i wanna try to use Solaris.

lens shootout : Nikkor 32mm vs sigma 17-70mm part 1

its actually a really unfair comparison, because the sigma is macro lens and nikon a portrait lens. the Sigma 17-70 F2.8 Macro is considered as all around lens and the nikon could considered it was well. the nikon lens 32mmF1.2 have really close focus distance for this kind of lens (which good for macro) and also smaller sensor of the nikon1 system make much less intense out of focus blurs, compared to a fullframe or APS-C sensor (which is good for landscape).
also a comparsion between DSLR Canon 500D with APS-C sensor and mirrorless Camera Nikon V1 with much smaller 1’inch Sensor is not really fair. but i will do it anyway. also need need some pictures for my upcoming sigma17-70mm F2.8 and nikkor 1 32mm F1.2 lens review.

ok lets start with marco shoots:
scene1:
sigma 17-70mm –> @70mm @F4.5 iso320 1/80 –> canon 500D
70mm_f4.5_iso320_80 013

sigma 17-70mm –> @17mm @F4.5 iso100 1/25 –> canon 500D
17mm_f4.5_iso100_25 012

nikkor 1 32mm –> @F2.0 iso220 1/350 –> nikon V1
32mm_f2_iso220_350 008

nikkor 1 32mm –> @F1.2 iso100 1/250 –> nikon V1
32mm_f1.2_iso100_250

scene 2:
nikkor 1 32mm –> @F1.2 iso100 1/640 –> nikon V1
32mm_f12_iso100_640 002

nikkor 1 32mm –> @F2.8 iso160 1/250 –> nikon V1
32mm_f28_iso160_250 001

sigma 17-70mm –> @17mm @F2.8 iso100 1/80 –> canon 500D
17mm_f28_iso100_80 004

sigma 17-70mm –> @70mm @F4.5 iso160 1/150 –> canon 500D
70mm_f45_iso160_100 005

sigma 17-70mm –> @70mm @F4.5 iso100 1/125 –> canon 500D
this one is on manuell focus (the lens or camera couldn’t any focuspoints)
70mm_f45_iso320_100 003