DPReview.com is closing April 10th - Find out more

GX7 image resolution

Started Jul 26, 2019 | Questions thread
norman shearer Senior Member • Posts: 1,418
Re: GX7 image resolution

alcelc wrote:

No, dpi (dot pre inch) or better described in digital world, ppi (pixel per inch), is something you instruct your printer to or print a hard copy of image. So, if at a printing resolution of 300 ppi, a 3000 x 3000 (9Mp image) can print out a 10" x 10" hard copy without any enlargement. Of course if you print at 100 ppi, you can get a 30" x 30" printout. When a printout of 300 ppi can look good at certain distance, at the same distance a 100 ppi print out would look less well resolved. That is the only difference between different resolution of printing.

However, it has nothing to do with the output from you camera. Of course you can capture a lower resolution image out of the camera (e.g. 3:2 mode, or S size etc). However it will just limit the headroom of how you can use the image, e.g. print large, view on a higher resolution screen, to crop etc.

Sorry to jump in but on a similar note. If I elected to use a smaller size in camera would the camera still shoot full size and then reduce it afterwards to the selected size? If not then a smaller jpeg size derived from the same size sensor may have less noise?

I'm just thinking this because I have Sony A7S and that is good for high ISO due to bigger pixels etc.

I could test for myself but I'd probably draw the wrong conclusions! I usually shoot RAW btw.

 norman shearer's gear list:norman shearer's gear list
Samsung EX2F Nikon Coolpix A Sony RX1R Canon EOS 5D Canon EOS 5D Mark II +10 more
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow