Thanks Jim and Stewart
I'll look at it again later today but here is the blurb from the Zenfolio site.....
When ordering prints and photo products it is important to have sufficient image size. Zenfolio's vendors have different requirements, depending on the product.
Zenfolio uses a built-in feature that will alert you during the ordering process if the photo you are ordering have an insufficient image size for the product you have chosen.
MPIX
Mpix uses photo imaging equipment with the minimum required image resolution of 100 pixels per inch (ppi). For the best results, however, make sure your images are large enough to print at 250ppi or higher.
For example, to print an 8" x 10" print, the minimum image size required would be 800 x 1000 pixels. However, for best results, it is recommended that the image size be 2000 x 2500 pixels.
IYP
IYP has different image size requirements depending on the product. Please see their product guide for exact requirements.
fotoflōt
fotoflōt products are printed using photo imaging equipment with the minimum required image resolution of approximately 100 pixels per inch (ppi), but you may want to use higher resolution to enhance clarity and sharpness. A Durst Theta 51 machine is used to produce the fotoflōts at a resolution of 200 dpi, which is the recommended resolution.
For example, to print a 20" x 10" panorama, the minimum image size required would be 2000 x 1000 pixels. However, for best results, it is recommended that the image size be 4000 x 2000 pixels.
Photobox
Photobox uses photo imaging equipment with the minimum required image resolution of 100 pixels per inch (ppi). For the best results, however, make sure your images are large enough to print at 250ppi or higher.
For example, to print an 8" x 10" print, the minimum image size required would be 800 x 1000 pixels. However, for best results, it is recommended that the image size be 2000 x 2500 pixels.
Refer to the
Recommended Resolution Guide from Photobox for specific resolution recommendations.
Recommended resolution guide
When ordering a print you should pick a print size that is appropriate to the resolution of your image. If you are seeing a warning for one of your images, try ordering a smaller print size. If you wish, contact us for advice.
The following table shows the minimum acceptable image size in pixels for each print size (based on the longest edge).
Product/longest side Minimum no. of pixels across (minimum megapixels) Preferred no. of pixels across (preferred megapixels)
Passport print mini-prints 200 pixels ( < 1m ) 400+ pixels ( < 1m )
5" 300 pixels ( < 1m ) 800+ pixels ( < 1m )
6" cards, coasters, mug, mousemat, t-shirts 600 pixels ( < 1m ) 1200+ pixels ( 2m + )
7" 600 pixels ( 1m ) 1200+ pixels ( 2m + )
Large and medium calendars 800 pixels ( 1m ) 1600+ pixels ( 3m + )
8" bags, cushions 900 pixels ( 1m ) 1600+ pixels ( 3m + )
10" placemats 900 pixels ( 1m ) 1600+ pixels ( 3m + )
A4 12" 900 pixels ( 1m ) 1600+ pixels ( 3m + )
15" 1000 pixels ( 1.3m ) 2000+ pixels ( 4m + )
A3 poster 1200 pixels ( 1.3m ) 2000+ pixels ( 4m + )
40x30cm and 40cm square canvases 1250 pixels ( 1.5m ) 2000+ pixels ( 4m + )
A2 poster 1500 pixels ( 2m ) 2400+ pixels ( 4m + )
30" 1500 pixels ( 2m ) 3000+ pixels ( 4m + )
60x40cm canvas 1500 pixels ( 2m ) 3000+ pixels ( 4m + )
70cm square canvas 2000 pixels ( 2.5m ) 3000+ pixels ( 4m + )
80x53.5cm canvas 2250 pixels ( 2.5m ) 3000+ pixels ( 4m + )
110x47cm canvas 2500 pixels ( 3m ) 3000+ pixels ( 4m + )
