Imaging Resource posted the new Olympus E-P2 review.
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A new Olympus E-PL1 review is available on Letsgodigital
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Forum Olympus France tested the new Olympus E-PL1 (google english translation)
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The german website Dkamera tested both the Olympus E-PL1 (google english translation) and the Panasonic GF1 (google english translation)
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As you know Samyang just launched three Samyang lenses for FourThirds mount. Lenstip posted some image samples of that lens. And more image samples are available here at canon-board.info

The new Samsung NX10 review is available here: http://www.dpreview.com/reviews/samsungnx10/

Key informations:
- The Samsung 30mm pancake is almost as good as the Panasonic 20mm
- Samsung NX10 and Panasonic GF1 jpeg comparison shows that the GF1 has the “lightest anti-aliasing filter“.
- In RAW the GF1 is “slightly out-resolving the Samsung”
- Overall score is the same as the GF1 (Click here to read the GF1 dpreview conclusions: http://www.dpreview.com/reviews/PanasonicGF1/page33.asp

I just saw a very good review on Pbase about various ‘legacy’ 50mm lenses on the Panasonic GF1.

Following lenses have been tested (click on the link to see the lens on eBay):

1. Canon 50mm f1.2 LTM
2. Canon 50mm f1.4 LTM
3. Leica 50mm Summilux f1.4 (first version) – M fit
4. Jupiter 3 50mm f1.5 (copy of the Zeiss 50/1.5)
5. Leica Summicron 50mm f2 (pre-asph new version, 1980s-1990s) – M fit
6. Leica Summicron 50mm f2 (pre-asph, chrome older version) – M fit
7. Voigtlander Heliar 50mm f2
8. Leica Elmar 50mm f2.8 (old M fit collapsable version)

It has been a huge surprise for me to read from the test that the Coigtländer Heliar showed the post performance! Do you agree?

He also tested the Black&White performance.
One more test is available here: http://www.pbase.com/nickdemarco/test_3_final

The french portal Reportagesphotos.fr tested the Panasonic GF1 (click here to read the google english translation). Once finished with the review you should definitely take a look on the rest of the websites. They have awesome photos!

GF1 vs NX10 High ISO Jpeg Comparisons (dpreview forum)

GF1 vs. GH1 High ISO test (dpreview forum)

Dpreview just posted the Ricoh GXR review.

They compared the camera with the Panasonic GF1. Use this quick links to see the results:

Ricoh GXR vs Panasonic GF1 noise test: http://www.dpreview.com/reviews/ricohgxra12/page15.asp
Ricoh GXR vs Panasonic GF1 JPG test: http://www.dpreview.com/reviews/ricohgxra12/page24.asp
Ricoh GXR vs Panasonic GF1 RAW test: http://www.dpreview.com/reviews/ricohgxra12/page28.asp
Ricoh GXR vs Panasonic GF1 High ISO: http://www.dpreview.com/reviews/ricohgxra12/page29.asp
Ricoh GXR vs Panasonic GF1 Resolution: http://www.dpreview.com/reviews/ricohgxra12/page30.asp

Reminder: the Ricoh GRX is a modular camera. If you buy every single piece on Amazon you will have to spend quite a lot .