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Author Topic: Where is sharpness gone???  (Read 3288 times)

Offline @go

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Where is sharpness gone???
« on: December 12, 2013, 08:31:10 pm »
This a comment for this page on the website
Look at this with Oly 75mm:
http://www.dxomark.com/Lenses/Compare/Side-by-side/Olympus-MZUIKO-DIGITAL-ED-75mm-F18-on-Panasonic-Lumix-DMC-GX7-versus-Olympus-MZUIKO-DIGITAL-ED-75mm-F18-on-Olympus-PEN-E-P5-versus-Olympus-MZUIKO-DIGITAL-ED-75mm-F18-on-Olympus-PEN-EP3___898_901_898_883_898_724

GX7  (16mpix + AA filter): 7 mpix
E-P3 (12mpix + AA filter): 9 mpix
E-P5 (16mpix + AA filter): 12 mpix
E-M1 (16mpix - AA filter): 12 mpix

A bit strange...

Offline Emilie_DxOMark

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Re: Where is sharpness gone???
« Reply #1 on: December 17, 2013, 10:10:00 am »
Hello,

Yes, this is something we checked many times before publish it, we relate it in the review too :
http://www.dxomark.com/Reviews/Best-lenses-for-the-16-MPix-Panasonic-Lumix-DMC-GX7-Part-1/How-does-sharpness-compare-between-the-Panasonic-Lumix-DMC-GX7-and-the-Olympus-OM-D-E-M1
Sharpness measured on GX7 is a bit low, but pretty close to the GX1 results. We guess there is a strong Anti Alias filter on this cameras.
 
Best regards,

The DxOMark team

Offline MarkyM

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Re: Where is sharpness gone???
« Reply #2 on: December 17, 2013, 03:06:34 pm »
Thank you Emilie but I think your team needs to revisit this again.
Did your team make sure to use the GX7's electronic shutter or avoid shutter speeds in the "shutter shock" zone? Or perhaps IBIS was turned on by mistake.
It could be that you simply tested a bad unit. Do you test more than one sample unit?
The Olympus 75mm F1.8 on old, 4+ year old Panasonic GH1 scored 9 "P-Mpix" but the same lens on GX7 provides only 7.
Can you explain these "P-Mpix" a bit more for us?
« Last Edit: December 17, 2013, 05:46:48 pm by MarkyM »

Offline bikeboy

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Re: Where is sharpness gone???
« Reply #3 on: December 20, 2013, 05:13:15 am »
I thought the GX7 did not have an AA filter. Now I am confused.

Offline Emilie_DxOMark

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Re: Where is sharpness gone???
« Reply #4 on: January 07, 2014, 08:54:12 am »
Thank you Emilie but I think your team needs to revisit this again.
Did your team make sure to use the GX7's electronic shutter or avoid shutter speeds in the "shutter shock" zone? Or perhaps IBIS was turned on by mistake.
It could be that you simply tested a bad unit. Do you test more than one sample unit?
The Olympus 75mm F1.8 on old, 4+ year old Panasonic GH1 scored 9 "P-Mpix" but the same lens on GX7 provides only 7.
Can you explain these "P-Mpix" a bit more for us?

We are currently performing new test on a new camera, stay tuned :)

Offline digitalFlack

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Re: Where is sharpness gone???
« Reply #5 on: June 17, 2014, 10:15:14 pm »

Mid-June.

Were the new results ever posted?

JF