Shrine-university project

[shura]

[d12dozr]

good renders, excellent tip

[Sepo]

Oli... I am not sure that I understand what you mean by keeping the scale of the image the same. The thickness of the black frame is thinner at the top and bottom than sides.. Would enlarging the canvas size equally do the trick? Have you discovered some sort of rule of thumb in terms of enlargement?

[olishea]

no rule of thumb.I just did it until the scale looked about right!

Sid I just cropped outwards using alt and shift....suppose you could do it with canvas size. I just kept having to tweak it til I got it right so I used crop.

For example: say your hdri is 10,000 pixels wide. That image must remain that size at all times. just increase the border size......so you will end up with a 10,000 pixel wide hdri set within a larger frame.

[Fletch]

It should be pointed out (for those beginning with HDR) that this tip/technique WILL END UP WITH BLACK showing in your HDRI reflections or if you are aiming your camera in the direction where the borders will meet. As the image is wrapped around the inside of the sky sphere, the top, bottom, and "seam" edge of where this border will meet itself on the sphere will be black, and little/no light will come from that portion of the HDR. So run some quick prelims, and use the rotation slider in the Sun/Sky/Lighting Dialog of Twilight to adjust the angle of view of the HDR.

[Sepo]

Fletch I supose one could actually find the most predominant colour and use it instead of black to reduce impact of any reflection mistakes.

[Fletch]

or, if you are REALLY good with the STAMP tool... one could do a great job of masking it all-together.

[Sepo]

Yep ... thought of that one as well....but seems a lot of work though

[olishea]

yeah forgot to mention the black border! rotate it out of shot.....or if you really need that edge to be clear then invert the spherical panorama so the edges become the middle.

no idea how to do this....can you do it with polar coordinates filter?

for example. if you have a tree in your hdri that forms the edges of the image (the bits which stitch together)....can you shift it to the middle? i know its possible but not sure how....

[Fletch]

Photoshop>Filter>Other>Offset