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GX85+14-45 vs E-P5+14-42(ii r) comparison

Started Dec 30, 2019 | Discussions
buratino
buratino Contributing Member • Posts: 929
Re: GX85+14-45 vs E-P5+14-42(ii r) comparison

The 12-40 is clearly sharper than any of the above kit lenses. But the MTF values aren't comparable, mainly because you're comparing f/2.8 to f/5.6. You can fairly compare an f/2.8 lens to an f/2.8 lens, but not to an f/5.6 lens. The only way to be fair is to stop down the 12-40 to f/5.6, which may improve the MTF values.

Aside from that, I'm not sure manufacturer provided MTFs are generally comparable between brands, unless the comparisons were done by the same people.

I only use them to compare Panasonic lenses to other Panasonic lenses at the same aperture, or Olympus lenses to other Olympus lenses at the same aperture. In other words, which Panasonic lens is the sharpest, irrespective of other brand lenses.

Of course, your approach is more technically correct.

My major interest is the widest angle combined with the most open aperture, so it makes sense for me to compare 12-32 and 12-40 at somewhat different apertures.

And when my eyes are not offended by mixing pics from 12-32 and 12-40, it's even better when MTF charts do not contradict it (at lower frequencies). I still might need to give 12-60 a try. but even the PL version has been reviewed inconsistently.

 buratino's gear list:buratino's gear list
Panasonic Lumix DMC-GF7 Panasonic Lumix DMC-GX85 Panasonic GX850 Olympus M.Zuiko Digital 45mm F1.8 Rokinon 7.5mm F3.5 UMC Fisheye CS +9 more
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