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Posted on 23/10/20 09:44:02 AM |
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JimH
Image Imaginator Posts: 74 Reply  |
Re: Challenge 828: On the deck
Thanks Steve, I did have doubts after submitting it about the handrail, trouble was getting the car to fit in the scene without part of it missing!! Am sure I could have reduced the pic size other than using Transform though??  |
Posted on 23/10/20 09:45:57 AM |
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JimH
Image Imaginator Posts: 74 Reply |
Re: Challenge 828: On the deck
Thanks DavidMac, trying to keep up to the standard all you guys set does make you try harder, so thanks to everyone!!  |
Posted on 23/10/20 2:14:33 PM |
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DavidMac
Director of Photoshop Posts: 5666 Reply  |
Re: Challenge 828: On the deck
Never crossed my mind but I see exactly what you mean! They were fun to do but surprisingly challenging. Caught me out. I really thought they were going to be simple.
I am delighted that Anna accidentally prompted me to really look at this closely. It's something that catches us all out. Time to look at Foxy. Thanks Steve. _________________ The subtlety and conviction of any Photoshop effect is invariably inversely proportional to the number of knobs on it ....... |
Posted on 23/10/20 11:11:30 PM |
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dwindt
Realism Realiser Posts: 919 Reply |
Re: Challenge 828: On the deck
Thank you Steve. I ripped the metal work from the structure on the right of the original image and used it as a support to hold up the awning. The awning is actually the deck. 
Anna, hope you don't mind my render of the chair / box shadow. I don't have the same box or chairs as you do. The box is an ammo box. Seeing as it's close to Diwali, you can open the case an use the fireworks in there for the festival of lights...lol  _________________ The grass is greener on the other side of the fence because there is more $hit there. |
Posted on 24/10/20 10:18:11 AM |
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DavidMac
Director of Photoshop Posts: 5666 Reply |
Re: Challenge 828: On the deck
Hi Dwindt I don't want to prolong this discussion but if the shadow were indeed in the direction you suggest then the chairs and box would all themselves be in the shadow of the stone wall and couldn't exist. I should explain that the 3D model and animation I showed were produced using a software for architects. It includes a specialised tool for accurate shadow plotting anywhere in the world by geolocation, the date, and the time of day. It enables architects to visualise very precisely the effect of shadowing that their building will have on its environment. If geolocation is not available, one can also plot visually using the same tool by positioning the sun manually. As you can see the software also takes into account the effect of camera induced perspective as well by creating a virtual camera. This is important because the camera perspective can distort the apparent direction - as was the case here. I can assure you that the proposal I put forward is neither guesswork nor cleverness on my part. It is quite simply the result of a calculation made by a software designed for exactly the purpose I used it. Because it was deduced from an image and not geolocation there will be a margin of error but I can assure you the basic shadow layout shown will be at least 80% accurate. That's my last word on the subject. The results I showed were produced by something much, much cleverer than I! _________________ The subtlety and conviction of any Photoshop effect is invariably inversely proportional to the number of knobs on it ....... |
Posted on 24/10/20 2:06:46 PM |
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dwindt
Realism Realiser Posts: 919 Reply |
Re: Challenge 828: On the deck
Lol - it's just an additional opinion using an example including chairs aswell rendered by a renderer that considers PBR (physically based rendering) I'm not disputing your example. I concur with your explanation re the sun, the only guess work however, would arise from not knowing what time Anna was envisaging and therefor not positioning the sun in the appropriate position. I agree that the building would play a major roll, cutting off the light and not casting such upon the right chair but that is a given. I do have an opinion with regards graphic software and the sun though. I believe that the sun is so vast that to a certain extent light perspective point could be calculated as to close . The point of perspective should be placed many light years behind the sun and not in the center of such, leaving a less exaggerated angle of all shadows but then i'm an artist and not software designed by educated programmers. No hard feelings David. Having said all that, Anna, I think your image is very appealing. _________________ The grass is greener on the other side of the fence because there is more $hit there. |
Posted on 24/10/20 3:07:24 PM |
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DavidMac
Director of Photoshop Posts: 5666 Reply |
Re: Challenge 828: On the deck
That can be so of course. But in this case the sun is actually in shot so no guesswork is needed to deduce it's position.
Yes absolutely! I agree completely. The sun is at infinity for shadow purposes so it doesn't just produce a less exaggerated angle, it produces none. Shadows from the sun are effectively parallel with no divergence. Strangely you have echoed exactly what my technically produced example showed. In the top view you can see the shadows are absolutely parallel. The divergence in the second picture is entirely a product of the lens. It is in effect a distortion. The wider the lens the more severe this will be. It is this distortion that trips everybody up because it is so hard to predict with any accuracy. Anna's original shadow was exactly correct in terms of sun/object position. What it didn't allow for was the lens distortion. That is damn difficult! It was only the presence of the floorboards that made this example possible to guess at with a reasonable degree of accuracy. And yes, of course, artistic interpretation is not literal and nor need it or should it, necessarily, be so. God forbid! _________________ The subtlety and conviction of any Photoshop effect is invariably inversely proportional to the number of knobs on it ....... |
Posted on 25/10/20 02:12:22 AM |
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dwindt
Realism Realiser Posts: 919 Reply |
Re: Challenge 828: On the deck
 So you said what I said that you said! That's what I said....poet licence...with calculations...and guesses! That's a beauty of being an artist!...lol!_________________ The grass is greener on the other side of the fence because there is more $hit there. |
Posted on 25/10/20 1:38:04 PM |
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lwc
Hole in One Posts: 3218 Reply  |
Re: Challenge 828: On the deck
Thanks for your comments Steve... an interesting challenge. |
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