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View Full Version : WarThunder + NVIDIA's Ansel - great tools


scifi
11-06-2017, 06:19 AM
Hello everyone!! Back here after a really, really long time (4yrs?) and getting back to art. Thought I'd share this great 'tool' that I found for aviation art. Have any of you heard of this game called WarThunder (https://warthunder.com/en)? It's a free-to-play massively multiplayer online battle simulator where you can fight in early monoplanes to early Cold War era jet fighters/bombers. This game has support for NVIDIA's Ansel in-game camera technology which allows for some great compositions.

Basically what you can do is, get into a game with the aircraft of your choice, fly/fight/die, go to the Replays, play the replay and pause where you want, bring up the Ansel menu and then go berserk with the camera! You can zoom in-out, move the camera to wherever you please (view from the exhaust of a jet, anyone?!), apply a variety of filters etc. etc. The possibilities are limited only by one's imagination. Here are a few shots I captured.

I'd like to know from the experts here if these images are correct from a perspective pov as I'm planning to use shots from the game for my compositions.
http://www.wetcanvas.com/Community/images/06-Nov-2017/973925-War_Thunder_Screenshot_2017.11.06_-_16.14.51.21.jpg

http://www.wetcanvas.com/Community/images/06-Nov-2017/973925-War_Thunder_Screenshot_2017.11.06_-_16.18.44.92.jpg

http://www.wetcanvas.com/Community/images/06-Nov-2017/973925-War_Thunder_Screenshot_2017.11.06_-_16.21.25.72.jpg

http://www.wetcanvas.com/Community/images/06-Nov-2017/973925-Capture.JPG

NeilF92
11-06-2017, 09:49 AM
Some remarkable scenery . I can't help as regards the perspective . Do you know what focal length the camera is? I use a virtual 50mm lens in Blender but I don't know what this game uses . It looks not bad though .

Trumper
11-06-2017, 12:32 PM
Most games have a zoom in view so you need to check on the focal length if possible as Neil says.Alot of these models are very realistic.

chrismc
11-06-2017, 04:36 PM
Couldn't get used to War Thunder after playing il-2 and Aces High for so long but it does look great even at low settings.

scifi
11-09-2017, 06:36 AM
I asked the game's developers about the in-game camera's focal length and this is their reply:

"We can specify the FOV which then can be converted to the focal length. Field of view in the game is 90 on most of the cameras."

I'm not sure what to make of this though :rolleyes:

NeilF92
11-09-2017, 06:59 AM
Ouch ! I tried understanding Wiki's explanations of Angle of/ Field of View " ref Lens focal lengths for digital cameras . My head hurts now and I'm not much wiser - must try harder! Was never good at maths in school :)
Somewhere in there is a formula for getting to the focal length from the AOV but I'm too dumb to figure it .

scifi
11-13-2017, 01:08 AM
Ouch ! I tried understanding Wiki's explanations of Angle of/ Field of View " ref Lens focal lengths for digital cameras . My head hurts now and I'm not much wiser - must try harder! Was never good at maths in school :)
Somewhere in there is a formula for getting to the focal length from the AOV but I'm too dumb to figure it .

There are some online tools that will give you the focal length for a FOV and vice-versa. I'll capture some images based on that info and then evaluate them for correctness of perspective.

In general though, is there a rule or method for checking if an image has the correct perspective and has no perspective distortion?

scifi
11-20-2017, 05:16 AM
I captured some more images after adjusting the FOV. I used this online conversion tool http://www.bdimitrov.de/kmp/technology/fov.html (Rectilinear Lenses on Film Bodies to be specific). For 50mm focal length the FOV comes out to around 47.

http://www.wetcanvas.com/Community/images/20-Nov-2017/973925-War_Thunder_Screenshot_2017.11.20_-_14.59.55.34.jpg

http://www.wetcanvas.com/Community/images/20-Nov-2017/973925-War_Thunder_Screenshot_2017.11.20_-_15.01.49.24.jpg

http://www.wetcanvas.com/Community/images/20-Nov-2017/973925-War_Thunder_Screenshot_2017.11.20_-_15.08.32.30.jpg

NeilF92
11-20-2017, 09:30 AM
Very useful link scifi , interestingly 50mm for film = 47deg FOV whilst for a DSLR with 1.5 crop factor 50mm = 32deg FOV. I'll do some research but I'm assuming the Camera I use in Blender is set up as a film one and not DSLR . There are other calculations which give you viewing distance, I'd need to study Joe DeMarco's APM guidelines to refresh myself on that.
Thinking about it - the sensor size on the Blender camera I use is 32mm which x 1.5 = 48 i.e. close to 50mm so maybe I'll need to rethink my Cg imaging .

NeilF92
11-20-2017, 11:02 AM
Forget my last sentence above - talking rubbish again!