Cropping

[debbru]

When I crop to a specific size e.g 15 x 10 cm, my image ends up too big, can someone tell me what I'm doing wrong

[firstdefence]

How much too big?

Which app?

Which Operating System 

[debbru]

I thought I was cropping an image to a 15 x 10 but as you can see from the screenshot the dimensions are too big, I'm cropping in AF & I use a Mac

[Gnobelix]

A possibility
Create a new document with the desired aspect ratio 15 * 10 cm
Open the picture to be cropped, menu bar-File-Place...
With the Move Tool (Shortcut V) you can freely scale the image,
to get the desired image detail. (use the handles) and rasterise.

 

Cheers

[IanSG]

Are you sure your crop was to absolute dimensions?  28.8x19.2 is the same ratio as 15x10.

[Alfred]

7 minutes ago, IanSG said:

Are you sure your crop was to absolute dimensions?  28.8x19.2 is the same ratio as 15x10.

28.8 × 19.2 is indeed the same ratio as 15 × 10 — well spotted! — but 28.8 × 19.22 (as shown in the screenshot) is not. 

[debbru]

When I choose absolute dimensions, how does it know what dimension I want, Landscape of Portrait

[Alfred]

For both fixed aspect ratios and absolute dimensions, the first value is the width and the second value is the height.

[debbru]

Does it adjust automatically to Landscape or Portrait

[walt.farrell]

5 hours ago, debbru said:

I thought I was cropping an image to a 15 x 10 but as you can see from the screenshot the dimensions are too big, I'm cropping in AF & I use a Mac

I'm a bit confused by that screenshot. It looks like you're in Document Setup. For cropping I would usually use the Crop Tool.

Are you trying to crop (remove part of the image) or merely to resize the existing image while keeping all of the content?

[debbru]

I'm sorry I confused you with that screenshot. I'm still learning how to use AF after using PS for years. I took that screenshot once I imported the picture back Into PS. I'm trying to crop (part of the image). Could you please give me steps to follow or screenshots. 

[walt.farrell]

It might be best for you to start by watching one of the tutorials. For example, Cropping: Practical.

[debbru]

Thank you for the video tutorial. If you put in preset, like I want a 15 x 10, does it keep the same Ratio or does it change the dimensions.

[walt.farrell]

8 hours ago, debbru said:

Thank you for the video tutorial. If you put in preset, like I want a 15 x 10, does it keep the same Ratio or does it change the dimensions.

A size like 15 cm x 10 cm is an absolute size. A ratio would show as 15 : 10, and with that one you could change the size of the cropped selection but it would maintain that aspect ratio.

[debbru]

Thank you for your reply. When I pick crop, what do I choose unconstrained, Original Ratio, Custom Ratio or Absolute Dimensions? Do I put 15 in where it says width & put 10 in Depth.

[walt.farrell]

On 9/21/2018 at 2:13 AM, debbru said:

Thank you for your reply. When I pick crop, what do I choose unconstrained, Original Ratio, Custom Ratio or Absolute Dimensions? Do I put 15 in where it says width & put 10 in Depth.

That depends on what you're doing. But if you have an image larger than 15cm x 10cm (width, height) and you want to crop out a 15cm x 10cm piece of it to use, you would use Absolute Dimensions, put 15cm in the width (not 15, but 15cm) and 10cm in the height. Then you would move the crop box around to select the part of the image that you want to save, and press Apply.

[Alfred]

1 minute ago, walt.farrell said:

use Absolute Dimensions, put 15cm in the width (not 15, but 15cm) and 10cm in the height

If your document units are centimetres you shouldn’t need to specify cm, but it won’t do any harm to do so.

[debbru]

5 hours ago, walt.farrell said:

That depends on what you're doing. But if you have an image larger than 15cm x 10cm (width, height) and you want to crop out a 15cm x 10cm piece of it to use, you would use Absolute Dimensions, put 15cm in the width (not 15, but 15cm) and 10cm in the height. Then you would move the crop box around to select the part of the image that you want to save, and press Apply.

Thank you I will try that, when I put the value i, should change the units to centimetres 

[R C-R]

1 hour ago, debbru said:

Thank you I will try that, when I put the value i, should change the units to centimetres 

Using the Absolute Dimensions crop mode, if you do not include a units suffix, the app will default to using the document units. (One way to tell what the document units are set to is to click on the View Tool -- it looks like a hand -- & refer to the Context toolbar, where there is a "Units:" popup displaying the current document units setting. You can also change the document units using that popup.)

But you can enter the width and/or height field values using any units you want by including the appropriate unit suffix (like mm, cm, in, px, or whatever) in the field, & Affinity Photo will automatically convert them to the current document units. You can even use one unit type for width & another for height, like 20 cm by 2000 px if you want.

[debbru]

14 hours ago, walt.farrell said:

That depends on what you're doing. But if you have an image larger than 15cm x 10cm (width, height) and you want to crop out a 15cm x 10cm piece of it to use, you would use Absolute Dimensions, put 15cm in the width (not 15, but 15cm) and 10cm in the height. Then you would move the crop box around to select the part of the image that you want to save, and press Apply.

Thank you for your help. When I choose centimetres the width & Height change, so I have to put them in again. Does this sound correct? Can you change the Resolution to 300 instead of 350

[debbru]

7 hours ago, R C-R said:

Using the Absolute Dimensions crop mode, if you do not include a units suffix, the app will default to using the document units. (One way to tell what the document units are set to is to click on the View Tool -- it looks like a hand -- & refer to the Context toolbar, where there is a "Units:" popup displaying the current document units setting. You can also change the document units using that popup.)

But you can enter the width and/or height field values using any units you want by including the appropriate unit suffix (like mm, cm, in, px, or whatever) in the field, & Affinity Photo will automatically convert them to the current document units. You can even use one unit type for width & another for height, like 20 cm by 2000 px if you want.

Can you tell me to Context toolbar is please. I'm sorry I'm asking all these question but I'm still learning after having been using PS for a long time.

[R C-R]

The Context toolbar is the second toolbar below the main toolbar. Its contents change depending on the tool selected.

[debbru]

Thank you for you email. I've cropped to 15 cm x 10 cm & exported it back into PS. I've attached a screenshot of the dimension size in Ps, can you tell me if I'm doing the right thing. 

[Alfred]

10 minutes ago, debbru said:

can you tell me if I'm doing the right thing

It looks almost right, but if you want the width to be 15.00 cm instead of 14.99 cm you need it to be 1772 pixels, not 1770.

[IanSG]

2 hours ago, debbru said:

Thank you for you email. I've cropped to 15 cm x 10 cm & exported it back into PS.

I've a feeling we're ignoring the elephant in the room - why do you need to crop in AP and then go back to PS?