Cropping feature works strangely

[APhotoWizard]

I have the latest version of Affinity and the latest version of macOS. I am new to Affinity, I am having a problem with the crop tool.  I have a picture on the screen that is 11 by 7.33 inches.  I wish to trim off the excess length and resample to get an 11x8.5 inch image for printing.

 

When I try to make 5x7 image, the crop guides maintain proportions as I select the portion of the image I want.  The 8x10 does not.  It appears as an 8x10 and when I select the corner, the arrows only pointing in and out, but the corner will move in any directions thus changing the proportions.

 

When I try to change the numbers for the size of an 5x7 to make a 7 x 5 the program resets the dimensions to 7x7 and the crop is proportional.

 

I tried custom size and entered 11 x 8.5, it took it, but the resulting crop was unconstrained.  

 

Finally after several attempts, the system no longer allows me to change the dimension units and it is stuck at pixel size.

 

Any suggestions would be appreciated.

[Alfred]

Welcome to the Affinity Forums, APhotoWizard. :)

 

The 'Custom Ratio' and 'Absolute Dimensions' crop settings in Affinity Photo behave differently: a custom ratio defines a fixed aspect ratio, whereas absolute dimensions merely define a starting point. It follows that if you want a fixed aspect ratio corresponding to 11" x 8.5" you need to set a custom ratio of 22:17. (Custom ratios need to be whole numbers, but if you enter absolute dimensions and then switch to the 'Custom Ratio' option, Affinity Photo will do the calculation for you.)

[APhotoWizard]

Adlfred - Thanks that makes more sense.

 

I misread the custom ratio tab and expected it to take the ratio in the chosen dimension.  With your help I can calculate the dimension I need.  Your suggestion to enter an absolute ratio then switch to custom also gets the right ratio.

 

Unfortunately this still leaves me with a problem.  How can I produce an image that is an exact specified size?  I have tried several combinations of crop and resize but can not achieve an exact size.

 

I get images from multiple sources that have different internal sizes, but I need to create images that fit standard size picture frames.

 

With Photoshop I set the ratio in inches, held the shift key to contain the proportions and adjusted the crop and applied.  The resulting image was the exact size specified so all I had to do was print to get the correct size image.

 

I must have missed something I just can not figure out what?

 

[anon1]

Adlfred - Thanks that makes more sense.

 

I misread the custom ratio tab and expected it to take the ratio in the chosen dimension.  With your help I can calculate the dimension I need.  Your suggestion to enter an absolute ratio then switch to custom also gets the right ratio.

 

Unfortunately this still leaves me with a problem.  How can I produce an image that is an exact specified size?  I have tried several combinations of crop and resize but can not achieve an exact size.

 

I get images from multiple sources that have different internal sizes, but I need to create images that fit standard size picture frames.

 

With Photoshop I set the ratio in inches, held the shift key to contain the proportions and adjusted the crop and applied.  The resulting image was the exact size specified so all I had to do was print to get the correct size image.

 

I must have missed something I just can not figure out what?

It can be done in one step in the export persona very easily

https://forum.affinity.serif.com/index.php?/topic/32053-most-amazing-export-persona/?p=155584

 

Cheers