How to adapt image to different sizes with same ratio

[delphine]

Hi there,

I would like to collaborate with posters companies to sell my illustrations.

They offer standard size, like 30x40cm, 50x70cm and 70x100cm. 

I personally set my canvas in AD 50x70cm.

The pb is that when I tried to fit my canvas to 30x40cm or above, it does't work and the margins on each side are uneven. As you can see on screenshot. 

So I am completely clueless about how the other artists do without cropping or changing the ratio. I made some researches and 50x70 is 7:5 ratio. So I should use size compatible with this ratio. 

But how does it concretely work in reality and with AD? And if there is a solution, does that mean that I have to do a complex setting for each variant size or is there a "bulk action" to simplify the process?

Many thanks 🙏

Delphine 

 

[Ldina]

@delphine It's always a problem, especially with printed images because width to height ratios are different. 100:70=1.43:1, 70:50=1.40:1, 40:30=1.33:1. They are all different aspect ratios. So, one has 3 typical options...

• Accept wider or narrower borders when rescaling (if you need to maintain the current aspect ratio of your artwork)
• Rescale the artwork disproportionately to fit the new aspect ratio
• Crop part of the image.

You can resize your Artboard to the desired poster dimensions, but then you need to decide how to fit your artwork into the new dimensions (i.e., If you need to preserve your current aspect ratio, crop, adjust border widths, etc). I've dealt with this for years in the USA, where we have idiotic 'standard' print sizes...3.5x 5, 4x6, 5x7, 8x10, 11x14, 11x17, 16x20, 20x24, etc (in inches). Many of these aspect ratios are different. Some images can be resized disproportionately without much problem, others cannot. Decisions, decisions. 

[delphine]

Yeah, this is what I feared. 

It's just that I saw some artist selling their artwork in different size but they don't show how each size would look. 

Many thanks anyway

Delphine 

[walt.farrell]

I generally resize my artwork so it fits one dimension and overflows the other, while maintaining the aspect ratio. Then I crop it to the final size and accept that I'm going to lose part of the design, but I get to choose which part of the design is lost by how I position the crop.

The Crop Tool in Affinity Photo, in Resample mode, can be handy to minimize the work in doing this. It allows the Crop to both crop and resize to the desired output size with just one operation.

[delphine]

Thank you!

[Ldina]

@delphine I used to sell my prints online, offering sizes from 4x6 up to 30x40 inches....standard sizes, of course (though I was willing to print non-standard sizes if requested). In the section on "Ordering Prints", I had a fairly detailed explanation of the aspect ratio problem, and I gave purchasers the choice of cropping to fit, or maintaining the original aspect ratio, which meant adjusting border widths. I also had to discuss "matting" (beveled mats), since many people want to use a standard frame size AND a standard pre-cut mat. This meant my final artwork/photo needed to be slightly larger than the opening of the pre-cut mat size. Yes, it's a pain, but it's a reality we have to deal with due to all these legacy print and frame sizes. I think it's probably worse in the USA, where we use a "Stone-Age" measurement system. Haha. 

[delphine]

@Ldina Yes so true, I struggle so much converting inches in cm 😵

[Ldina]

What's a cm? (just kidding 🤪)

[Oufti]

3 hours ago, delphine said:

But how does it concretely work in reality and with AD? And if there is a solution, does that mean that I have to do a complex setting for each variant size or is there a "bulk action" to simplify the process?

To have an example of what could be done, you can have a look at this demo: