People photos on a white background....

Question

Hi
I'm looking for a bit of advice on the following:
I need to print 200 profile cards (sized A6).  There will be information about the individual along with a photograph.  My questions are:
The photos are all 680 x 1024 at 72dpi - I'm sure these will print ok at A6....?
All candidates are on a white background - some backgrounds look brighter than others - what's the best way to make it look whiter (photos will be cropped and placed on a white background) and is there a way to do this on mass?
I'm using Photoshop CS6.
Many thanks in advance.
Kim

Answer 1

Kim Louise 22 wrote:
The photos are all 680 x 1024 at 72dpi - I'm sure these will print ok at A6....?
All candidates are on a white background - some backgrounds look brighter than others - what's the best way to make it look whiter (photos will be cropped and placed on a white background) and is there a way to do this on mass?
Normally when printing small image you should print at a high resolution like 300 DPI. A6 is 4.13" x 5.83" you should have 1239Px by 1749Px.  You have 680x1024px they would print 4.13" x 6.219" at 164.649Dpi which is not A6 size  so the images need to be cropped to an A6 aspect ratio.
If the portraits have a white background of varying whites. I think it should be quite easy to record an action to intensify the white background and blow them out. The simple action could be batched. Use the magic wand set to contiguous pixels, a relatively  high tolerance and click the upper left corner of the image you recording the action on that area should be white in all you images.  If the selection looks like it has all the white background add a level adjustment layer that adjustment layer should now have a layer mask that will confine the adjustment to the background area. Adjust the adjustment layer and move the right side white adjustment slider to the center to blow out the white area. Batch this action.