Distortion of portrait at resizing

[Graham004]

I've searched 150 threads with regard to printed image sizes and am still a bit confused. I have taken a sideway photo waist to head of a pregnant lady and printed at A4 & 5x7, the prints looks in perspective as I viewed it through the camera. I believe the camera ratio is 3:2. I bought a frame that has a 8x6 mount so resized photo in kiosk. The image looks a little distorted at this ratio. I tend to look for frames first then resize in photoshop accordingly. But what are the correct sizes/ratio for portraits. It seems most of the high street printers use different sizes prints (jessops 12x18 but had difficulty getting a frame to match). I realise it personal taste but whats the 'norm'. Thanks

 

[Almost_Invisible]

Resizing from a 3:2 ratio to a 4:3 will introduce distortion.
Try cropping instead of resizing. The crop tool can be set to the desired size in inches, dragged over and positioned.

Can't help on the normal sizes though as I just print to whatever size suits the picture :razz: to conforming

 

[The_Bulb]

Just pick which sized frame you want but instead of doing an image resize (this will distort the image if the size of the frame does not replicate the aspect ratio of the camera's original image) do a crop.

If you are using photoshop, go to crop command, type in the horizontal and vertical dimensions (in say mm) and set the dpi to say 300. Then drag the crop box accross the image and hit return. If the aspect ratio of the frame matches the original image you will be able to select the entire image, if it does not, you will end up loosing a strip across the top and/or bottom and sides, but the resulted crop image will not be distorted.

By entering the dimensions required into the crop panel, the crop box will be forced to maintain the aspect ratio of the desired frame and therefore will not distort the image.

As for printing, if you are not printing yourself you need to find a printing service and frame that matches, or print slightly oversized and use the mount in the frame to do the "cropping"!

Hope this helps

 

[Graham004]

Thanks for that. I have been browsing the internet and apparently these are the common sizes in a 3:2 ratio although a few are 4:3. Will try resizing and dragging infor onto image.

Information from professional photography website below.

A Size Size (mm) Size (inches) Closest Equivalent Printing Sizes

Standard print sizes are based on our Professional SLR Digital camera sensor ratio of 3:2 (e.g. 6x4 inches or 12x8 inches). Some of you may have cameras that produce a 4:3 ratio image (8x6 inches or 12x9 inches).

Standard sizes (Closest Equivalent column) with Industry Standard A sizes.


A1 841 x 594 mm 33.1 x 23.4 in 36 x 24 inches
A2 594 x 420 mm 23.4 x 16.5 in 24 x 16 inches
A3 420 x 297 mm 16.5 x 11.7 in 18 x 12 inches
A4 297 x 210 mm 11.7 x 8.3 in 12 x 8 inches
A5 210 x 148 mm 8.3 x 5.8 in 9 x 6 inches
A6 148 x 105 mm 5.8 x 4.1 in 6 x 4 inches
A7 105 x 74 mm 4.1 x 2.9 in 4.5 x 3 inches

 

[pxl8]

Don't forget that 3:2 ratio changes when you introduce a mount so you can often fit a particular frame size that way, eg:

6x4 fits inside a 8x6 mount

12x8 fits inside a 14x10 frame and so on...