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Questions on wrap designing.
Hi All,
Since we started wrapping over a year ago, the methods i used were as follows.
1. Find a design on Istock or create my own in Adobe CS3.
2. Import the design and the vehicle outline in to Coreldraw and use it`s shaping tool (trimming and intersecting)
3. I then export the panels as jpeg`s in to the customers project folder and then finally import them in to Wasatch 6.2 for printing.It has worked well over the last year with only the occasional problem due to inaccurate outline sizes etc. I have always based the wraps on hanging them like you would wallpaper on a wall. This always seemed to logical way when wrapping a relatively small cab.
Oddly, this week, i find myself presented with my first ever van wrap. I have 2 to do for a customer who wants me to design a 40% wrap to the rear of the van.
Ideally i would like to be able to bring the van outline in to PS CS3 and design at full size but it seems this cannot happen as Photoshop won`t allow you something at that size. The problem is that i need to accurately place the images on the vehicle and then blend them together.
Is my only option to use Coreldraw?.
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22 Replies
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Hi Rod
You can work at 50% size and 300dpi, then when you print it at 100% size it will be 150dpi which is usually more than enough.
that’s one option anyway.
cheers
Warren
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quote Warren Beard:Hi RodYou can work at 50% size and 300dpi, then when you print it at 100% size it will be 150dpi which is usually more than enough.
that’s one option anyway.
cheers
Warren
Is that correct? I would have thought it would end up at 75dpi if going from 50% to 100% – Not sure though 😕
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to be honest Phil I am not 100% sure, I thought that if it was 300dpi and you doubled the size then you halve the dpi.
I may have read this wrong on another thread though 😳 :lol1: 🙄
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If a file is 100cm by 100cm at 300dpi you can make it 200cm by 200cm at 150dpi without resampling.
Why can’t you setup your page size in photoshop?
I’m doing a van at the moment mercedes sprinter and its like 750cm long and about 300cm heigh my photoshop file.
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I think that Phill is correct.
If a file is 100mm x 100mm @ 300 dpi, when enlarged to 200 x 200mm, this is actually four times the original size (4 No. 100 x 100mm squares) so the dpi will be divided by four. Therefore 300 dpi then reduces to 75dpi at the larger size.
Hope that makes sense?
M
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Martin could be right, that makes sense 🙄
It could have been what Jason said that I was thinking about :lol1:
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I think Warren is right. (chat.) Someone should set up a vote on this. :lol1:
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if it starts at 100mm x 100mm at 300 dpi then making it 200mm x 200mm makes it 150 dpi
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Ill make it easy for you all
you have a 1x 1 square with four dots in it so its 4 dpi
if you scale up to double the size, that is one box 2 x 2 you wil still only have only have four dots, but they will be space equally so it will then = 1dpidouble the linear dimensions and you need to divide the dpi by 4
the confusion lies in when you double the linear sizes you multiply the area by 4
If you double the AREA the dpi is halfed.does that make sense?
Peter
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That’s what I said diddle I ?
:lol1:
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What he said :lol1: 🙄
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What about if you doubled the size of a cube then what happens to the dpi?????………………….. :lol1:
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or a sphere?…………………… :lol1:
Eco :lol1:
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You guys are wrong. You are confusing area with resolution.
Yes Peter you are right if your treating resolution like an area.
But open photoshop and try it.
Screen grabs attached.
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You will notice from my screen grabs my file sizes are identical so are my pixel counts.
If you have an image that measures 100 pixels by 100 pixels and when its printed it measures 10cm by 10cm at 100 dpi.
Now if you want to increase the size to 20cm by 20cm the image still contains 100 pixels across and 100pixels downwards but now is larger. The resolution drops to 50dpi.
Why?
100 pixels wide divided by the width of 20 cm = 50
100 pixels wide divided by the width of 10 cm = 100Get it?
If you increase an image size and RESMPLE you will get more PIXELS. Thats why images blurrrrRRRrrrrrrrrrrrrrrrrrRRRRrrrrrrrrrrrrr
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Yes, if you increase a 100cm picture @ 300dpi by 400% (take a 100cm image to 400cm) then you divide the dpi by 4 (75dpi)
If you increase the image by 200% (take from 100cm to 200cm) then you divide the dpi by 2 (150dpi)
If you increase the image by 600% (take from 100cm to 600cm) then you divide the dpi by 6 (50dpi)
If you reduce the image by 50% (take from 100cm to 50cm) then you multiply the dpi by 2 (600dpi)
If you reduce the image to 25% of the original – or 1/4 size (take from 100cm to 25cm) then you multiply the dpi by 4 (600dpi)
So, if the end result needs to be 75dpi, ask your client to send an image that is 25% of the final size @ 300dpi.
Is that clear?
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No but as I don’t even wrap the lunch I guess I can be ignored.
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so does that mean I am right 🙄 😮 😛
I’m off to tell the wife, I’m sure there will be a party involved :lol1:
:funky:
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Warren is right. Go party!
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:lol1: :lol1:
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Can just imagine Phill reading this and laughing his head off as it was him who cast doubt in the first place. :lol1:
Steve
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Well I reckon that Warren and Jason are right.
To prove it I conducted a little experiment:-
First I drew a black box 100mm x 100mm and exported this as a bmp file at 300dpi. On checking the size of the file I found it was 1.32Mb
Next I enlarged the box (this was a vector drawn image) up to 200mm x 200mm (i.e 4 times the surface area). I then exported this as a bmp at 150dpi. On checking the file size I discovered this was also 1.32Mb. This Proved to me that both files contained the same amount of information, which agrees with Warren and Jasons claim that if you double the size (quadrupling the surface area) you halve the dpi.
This is contrary to what I expected 😮
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quote Phill:Well I reckon that Warren and Jason are right.
😮
and me? (?) 😮
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