A7r 24-70 at 70mm vs EM1 12-40 at 40mm (80mm EFL)

Started Mar 6, 2014 | Discussions thread
Shop cameras & lenses ▾
Senior MemberPosts: 1,107Gear list
Re: Resize the A7/r to 16 MP to see how it compares...
In reply to LTZ470, Mar 6, 2014


If I understand what you have done (and I am not sure that I do!), it isn't a fair comparison at all.

What matters is that you compare images from the same size print. This has been discussed in multiple DPreview forums.

You must either enlarge the m4/3 image or reduce the size of the a7r image to do this or you are looking at per-pixel sharpness. Per-pixel sharpness favours cameras with lower pixel count.

The Nikon 800E users went through this incorrect way of comparing images in great detail. If I remember correctly there was someone who refused to accept that you can't simply compare per pixel sharpness.

So 100% may be 100% but you must normalize the print size.

 Camley's gear list:Camley's gear list
Sony Alpha 7R II
Reply   Reply with quote   Complain
Post (hide subjects)Posted by
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow