The major perk of the absolute light intensity calibration paradigm, is that all of aifosDesign's HDRIs can accurately be used for simulated physical camera workflows (i.e. With an value of -2, per above example, the Blender camera's exposure settings correspond with EV 11. If the value is negative, its additive inverse can be added instead, as per basic arithmetic, e.g. The physical camera equivalent EV can be calculated with EV 9 (Blender's implicit camera default) minus the value in. When you think that the exposure is balanced enough for your artistic vision, switch back to, and optionally further fine-tune the exposure, until you are satisfied with the results.Īll aifosDesign's HDRIs are delivered with a recommended value for balancing the Exposure value to eye-pleasing levels – found in the attached Read me file or on the product page – however, this is only intended as a starting point for further experimentation into what your artistic desires want to achieve with regards to lighting your scene. Hold the SHIFT key to fine-adjust the slider's value. To properly balance this – since Blender natively lacks physical camera controls (at least with an effect on exposure) – instead of manipulating aperture, ISO and shutter speed, navigate to (the context tab with the camera icon), and under, utilize the slider to achieve visually pleasing/intended results. This is because all of aifosDesign's HDRIs have been meticulously calibrated to actual light intensity (with EV 9 as the absolute reference point), in contrast to the arbitrary normalization prevalent in other HDRIs, and Blender's camera has implicit exposure settings equivalent to EV 9, which may produce a darker or lighter image than intended. This may take a while, depending on the size of the HDRI file.ĭepending on the characteristics of the HDRI, the scene may now appear (sometimes absurdly) over- or underexposed. Having set the HDRI file ( Open Image), change to.
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