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Thread: Wierd thing with E-M5 vs GX7 IQ

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    Default Wierd thing with E-M5 vs GX7 IQ

    I picked up a Panasonic GX7 in December since I really like the absence of the faux prism hump, and indeed, the camera is laid out and handles very nicely, much better in hand than the E-M5. However, the images were noticeably softer than those from the Oly, clearly so when developing the RAW optimally and printing crops at the equivalent of 17x22. It really surprised me, since everything I had read had the IQ between the two cameras being pretty much equal, and I only dug into it because it just seemed to me when I imported the Panny images into Lightroom that they were softer than they should have been. But the difference is there, consistently with different lenses and apertures. I can't really figure out why, though. Anyway the Panny is headed back to B&H since the E-M5 is pretty close to the bottom limit for me the way I tend to print.
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    Default Re: Wierd thing with E-M5 vs GX7 IQ

    I think there is a simple explanation - AA filter. I ma not sure if the E-M5 has a very weak AA filter or is without; but the GX7 has a typical AA filter - the result is a softer file. But this is easily fixed by sharpening a little more in post-process.

    edit: It is also possible that your RAW developer has different default sharpening for the two cameras that increase the difference.
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    Default Re: Wierd thing with E-M5 vs GX7 IQ

    Quote Originally Posted by tomsi42 View Post
    I think there is a simple explanation - AA filter. I ma not sure if the E-M5 has a very weak AA filter or is without; but the GX7 has a typical AA filter - the result is a softer file. But this is easily fixed by sharpening a little more in post-process.

    edit: It is also possible that your RAW developer has different default sharpening for the two cameras that increase the difference.
    Yes, that was what I thought. But while the GX7 files do sharpen up nicely, it is at the expense of more noise, and of course, I also can sharpen up the OMD files, so they stay ahead of the Panny. I was applying sharpening settings in LR that seemed to be optimal for each camera -- up to the limit without bringing in sharpening artifacts. But I do suspect AA filter has a lot to do with it.
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    http://www.facebook.com/album.php?ai...2&l=fad9c02a1f
    E-10, E-M5, 20mm, PZ 14-42mm

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    Default Re: Wierd thing with E-M5 vs GX7 IQ

    Post a couple of unprocessed RAW / JPEGs, really difficult to say what could be the issue otherwise. Could be your workflow.
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    Default Re: Wierd thing with E-M5 vs GX7 IQ - links to RAWs added

    Quote Originally Posted by Edmunds View Post
    Post a couple of unprocessed RAW / JPEGs, really difficult to say what could be the issue otherwise. Could be your workflow.
    Here are links to the RAWs for anyone who is interested.

    http://www.ahfairley.com/photos/EM5.ORF

    http://www.ahfairley.com/photos/GX7.RW2
    ODM
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    Recent photos: http://www.ahfairley.com/gallery/index.html
    http://www.facebook.com/album.php?ai...2&l=fad9c02a1f
    E-10, E-M5, 20mm, PZ 14-42mm

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