I just think it's better to adjust the lighting and use a consistent tone mapping setting. I never change the tone mapping settings more than one stop either direction. That leaves adjusting the placement, type, and brightness of the lamps to set the exposure. Film (even digital) has a set ISO so you can predict its grain or noise. He or she may want to always shoot at f/11 with a 135 degree shutter. There, the *lights* are adjusted to meet a specific exposure setting favored by the director of photography. In my view, it's better to not think of Iray as a still camera but as a motion picture camera used in a typical studio setting. It just confuses things otherwise. As you note, *unlike* a camera, altering these settings does not correlate to any physical change in the optics or film chemistry: DOF, image blur, or film grain, which is why you do them in a real camera. So you might as well pick one tone mapping setting and ignore the others. The f/stop, ISO speed, and shutter speed merely act to alter the EV in the predictable reciprocal fashion, and connect to the Iray tone mapper in the exact same way. The amount of light will not change the time that the GPU takes per itteration, but it will generate higher quality itterations in the same time. The higher your convergence is at the end of a render, the less noise will reamain in your image. The big takaway here is that more light getting to the canvas translates to higher convergence percent per itteration. In this last render I have bumped the ISO up two settings, shortened the shutter a step, increased the light to 1000w and will let it go to 5000 Itterations. The end result being a better looking render in less time.Ĭonvergence 2140 Itterations = 0.80% (Time = 6:53) This is the first of these renders with enough light getting to the canvas to generate Convergence numbersĪs you can see here, the more light that gets to the canvas the less passes it will take to reach 100% convergence. Object Default Skin shader 8Ft from light Light 6Ft tall (4 inch emissive sphere 4500k temperature inside of a 14 inch frosted glass sphere) Room x20ft z20ft y10ft (Iray -> Daz Uber -> "Rubber - Matte" Shader Quadro K5000M 4GB, Memory usage during renders = 1454MB Here are my findings from a controlled environment test. On your camera you also have a F/Stop setting, that one is only used for calculating depth of field (DOF) and has no direct link to how bright your rendered scene will be. Film ISO is how sensitive the film is to light ISO 100 and 200 are good for outdoor daylight shooting, 400 is good all purpose film, 8 are low light film good for indoors and night time shots. F/Stop is how narrow the apperature closes up on the Lens, F/1 is wide open letting lots of light in and F/16 is stopped down to a tiny opening letting hardly any light in. Shutter speed is a fraction number (1/x of a second), so the larger "x" is the smaller the fraction. These settings are meant to simulate how light is captured in a real life camera. Shutter Speed : The lower this setting the brighter your scene will be.į/Stop : The lower this setting the brighter your scene will be.įilm ISO : The higher this setting the brighter your scene will be. Render Settings Tab -> Editor -> Tone Mapping Go back to the Editor tab and select General.IMPORTANT SETTINGS THAT PEOPLE OVERLOOK OR DON'T KNOW ABOUT!.Not only does this light help you see while you are designing, but it will also render into the scene if you don’t remove it. Think of it like this: everything you see in Daz Studio is through the lens of a camera, and that camera has a small light strapped to the top of it. Select “ None.” This will remove the default map and lighting information associated with it.įinally, there is a light in the scene wherever you look, and that is referred to as a Headlamp.Choose the picture under Environment Map.Select the Editor The Environment option will become available at the bottom of the menu list.Select Render Settings from the top menu toolbar.We can start by removing this, so you can add custom lights. If you are rendering with NVIDIA IRAY, there is a default Environment Map that loads, which is a source of light information within the scene. Removing the default lighting in Daz Studio is simple.
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