HUGE renderings

[Notorious]

Hi all, here's a quick one. If a client requested a 250cm wide render at 200dpi. what would be the best stratergy (apart from telling them to go away)

I presume an amount of up-sizing would be needed as that is HUGE!

Any guidlines for a starting render size?

Cheers all!

[Arnold Sher]

it is actually rather strange as an image of that size does not require 200 dpi as it would not be viewed up close... You are talking about a billboard size and that usually gets printed at 100 dpi as print houses would not go beyond that... Anyway the size of your rendering would be 19685x13228 AT 200 DPI. This is absolutely massive... So what we would do is to split the image into four sections and render that out and put it together in photoshop. If you are using vray you could also try and render that image with your render farm and get multiple machines working on it. We are running dual core AMD's and they would probably be able to handle it, with a bit of luck of course.... I would also find out what exactly the client is going to be using the image for as he might not need it to go this big and got a bad recomendation from somebody else. Anyway, might two cents worth... Hope that helps

[klaas nienhuis]

I agree about the resolution. The size of the image dictates the viewing distance. The viewing distance says something about the resolution.

We get that quite a lot. The client wants a big image and tells us to make it 300 dpi. They seem to mistake dpi for quality: "the higher the better"

Still, large images do happen. If using Vray, you could use a lightmap of a lower resolution and render the image at full resolution using Backburner. Backburner lets you use "strip rendering". This function divides the renderjob in a certain amount of parts (strips). You could distribute these strips accross several computers or render only a strip at the time on one computer.

Klaas

[plastic]

yeah it's just dumb client having no clue what dpi means.

for 250 cm i'd render something like 6000 pixel wide.

set the dpi as you like in photoshop, without resampling.

or if the client insists, resample it with photoshop and send him a huge jpeg. he will have fun printing it.

[evanmister]

while this all sorta makes sense, could you all pretend i am a dumb client and give me the basics on how all the relationhips affect each other, and why assigning dpi in photoshop is a good idea?

 

thanks.

[cyberarchi]

yeah once i did the mistake, the first time i render some 80x80 cm posters at 250 dpi but then after, where i send them to print simply set dpi to 150, what a render waste of time i had ! check it with your print house first.