This table shows the ideal image sizes and resolutions for different online and screen-based applications, and for printing photos.
|Application||Ideal Image Size
|For mobile phones and portable devices with small screens:||320 x 240 pixels||72 ppi
|For emails, online sharing sites and viewing on standard computer monitors:||1024 x 768 pixels||72 ppi
|Viewing at full-screen size on LCD monitors with 5:4 aspect ratio||1280 x 1024 pixels||72 ppi
|Viewing on standard definition TV sets with 4:3 aspect ratios:||720 x 576 pixels||72 ppi
|Viewing on widescreen standard definition TV sets:||1280 x 720 pixels||72 ppi
|Viewing on high definition TV sets:||1920 x 1080 pixels||72 ppi
You need a much higher resolution when you want to make prints of your digital photos. For photos that will be examined closely – i.e. print sizes up to A4 – the recommended output resolution is 300 pixels/inch. For larger prints, which will be viewed from greater distances, the print resolution can be somewhat lower. The table below relates the output size required for high-quality photo prints to sensor megapixel counts.
|Sensor Resolution (megapixels)||Typical Image Resolution (pixels)||Maximum Print Size||Print Resolution||Maximum Output Size|
|2.16||1800 x 1200||6 x 4 inch||300 dpi||Snapshot prints|
|3.9||2272 x 1704||7.6 x 5.7 inch||300 dpi||‘Jumbo’ snapshot prints|
|5.0||2592 x 1944||8.6 x 6.5 inch||300 dpi||8 x 6 inch enlargements|
|7.1||3072 x 2304||10.2 x 7.7 inch||300 dpi||A4 sized prints|
|8.0||3264 x 2448||13.6 x 10.2 inch||240 dpi||A4 sized prints|
|10.0||3648 x 2736||18.2 x 13.7 inch||200 dpi||A3 sized prints|
|12.1||4000 x 3000||20 x 15 inch||200 dpi||A3+ sized prints|
|14.7||4416 x 3312||22.1 x 16.6 inch||200 dpi||A2 sized prints|
|21.0||5616 x 3744||31.2 x 20.8 inch||180 dpi||A1 sized prints|
This is an excerpt from Post Capture Pocket Guide.
Click here for more details on this and other titles in the Pocket Guide series.
Visit epson.com.au for the latest Epson printers.