3DOcean HDRi 001 Urban Clear Sky 8854148
Texture \ HDRI Images \ Exterior \ Urban
Background \ Dynamic \ Resolution \ Camera \ Shadows \ Images \ Lighting
Texture - HDRi 001 Urban Clear Sky 8854148 by giancr @ 3DOcean
Texture \ HDRI Images \ Exterior \ Urban
These HDRi can be used in any 3D program (3ds Max, Maya, C4, etc).
The height of the sun above the horizon is 23 กใ (0 กใ being the horizon and 90 overhead)
With these HDRi not need additional light to create sharp shadows.
These are the panoramic HDRi spherical type and 180ox360o.
Time that they made the photos 17:02
Height from floor to center point of the camera lens: 120cm.
This panoramic HDRi was obtained with an SLR camera by 7 shots in 2 EV between shots for a sequence of images, and then processed together to obtain a high quality HDRi.
These 7 shots are 1/8000, 1/2000, 1/500, 1/125, 1/30, 1/8, 1/2, they do 14Ev dynamic range capture. By bringing together images to create a dynamic range HDRi 13EV get real.
Background images in DNG and JPG (color: adobeRGB, 16 bits) formats and are open from Photoshop version CS3 or higher, or Lightroom version 2.1 or higher.
Background images were made on the same date and time the hdri.
More information and details about the HDRi in my blog.
What is HDRi? and What is LDRI? concept and differences
Radiance (.hdr) panorama in 2 sizes (10000×5000 pixel and 1024×512 pixel) and OpenEXR (.exr) panorama in 2 sizes (10000×5000pixel and 1024×512pixel).
9 background images in DNG (Raw) and JPG format (profile AdobeRGB color and 16 bits), camera color adjustment .xmp for DNG.
Total of 23 files in a compressed zip approximately 555 Mb
WHY IS AN HDR HIGH RESOLUTION AND OTHER LOW RESOLUTION OF THE SAME HDRI?
The low resolution HDRi is to optimize load HDRi on the scene if only used as lighting.
The HDRi used to illuminate a 3D scene; for reflections and the background scene. If it’s just to light, it is not necessary to load a high resolution HDRi because it consumes memory only just one of 1024×512 pixel and the same quality of light you get with one of great resolution. However, for reflections and background if a high resolution HDRi necessary.
By reducing the resolution (dimensions) of a HDRi with Photoshop or any image editing program, sometimes HDRi loses some of its dynamic range so that it retains the dynamic range has to be generated from the image sequence capture original, which is why I included a low resolution HDRi generated from the original, thus maintaining its real dynamic range.
Place the HDR in the materials section as Spherical map type. Depending on the rendering engine horizontal or vertical rotation of HDR can be as Offset U / V (0 to 100) or rotation H / V (0กใ to 360กใ).
More information and tutorials using the HDR in my blog.
– 3ds max and VRay light type Lightdome
– 3ds max and VRay light type Environment
– 3ds max and Maxwell
– Lightwave and Maxwell
DYNAMIC RANGE CHECKING IN PHOTOSHOP
Open HDR with Photoshop, in the bottom left you will find a scroll bar, move the center indicator to the left to see underexposure and overexposure to the right of the HDR. The visual appearance of HDR in Photoshop does not affect the lighting within the scene.
Visit my blog for more information regarding this topic.
Check real EV (Dynamic Range) of a HDRi
HDR WITH SHARP SHADOW
Some rendering engines make sharp shadows without assistance of any kind of additional lighting such as VRay. In the panel material, decreases the value of gamma to darken the shadows and edges define a value of 0.75 is recommended.
Defined shadows also depend on the quality of the HDR (EV capture) and if the picture has an intense light source such as a panoramic HDRi where you see the sun.
Read this tutorial on my blog about sharp shadows.
Make sharp shadows with HDR
WHY IS GIVEN HEIGHT FROM FLOOR TO THE CENTER OF THE CAMERA LENS?
When the HDRi is placed in the viewport as background image, 3D camera must have the same height from the floor of the camera that took the HDRi, so that when the models are placed in the scene, they appear as if they were actually in the floor.
Please see the following tutorial about camera placement using HDRi.
Add HDRi as background image
Note: The car example photo is not included.
Layered: No; Tileable: Yes; Graphics Files Included: JPG Image, High Dynamic Range HDR, OpenEXR Image; Minimum Adobe CS Version: CS; Texture Resolution: 10000x5000, 1024x512.
Keywords: 32 bits, background, backplate, blue, clear sky, dng, exr, hdr, hdri, highres, jpg, light, lighting, lightmap, panorama, reflection, reflective, sky, skydome, street, sun, texture, urban.