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To me these comparisons are incomprehensible. Click on one image…try to remember it. Click on the other and compare it with your memory. Doesn’t work for me. Unless I am overlooking something. I need tow pcis side by side. And well: I am not interested in JPGs.

In most if not all reviews I see JPGS and only JPGS and sometimes truely useless shots. I can only compare if there are sensible RAW shots.

Isn’t this like comparing apples and oranges? I’m pretty sure the focus of the GH3 is the video capability.

There’s clearly ISO cheat on the OM-D. Look at their shutter speed.

While it’s unfair and probably unproductive to compare production images with pre-release firmware images, the GH3 6400 ISO remiinds me why I’m not in love with my GH2 stills – the generally flat colours and the sometimes dodgy white balance make images far less likeable than a point & shoot, according to my wife, and I often have to agree.

I’ll likely upgrade to a GH3 anyways, because I shoot video, I want 1080p60 and I already have the lenses. But it’d be nice if Panasonic could improve the still quality for their flagship camera. It ain’t no 5Dmk2/3….. or even a T4i…. when it comes to stills.

GH3 is purely video
Em5 is a great picture camera

One thing I noticed is that the Olympus image is stated to be at 350dpi, while Panasonic is at 180dpi. I also believe the off white balance is skewing the result. Overall, I like the Olympus colors better and the higher dpi fits for me. And it is not only Oly that cheats on the ISO, I have heard that about several different brands.

OK….the thing that really strikes me to be AMAZING is the difference in size of these two cameras! MFT is ALL about small size and if you missed that, your ship did not sail. I shoot stills and own an OM-D, so Panasonic I thank you for making the GH-3. The OM even with the top half of the battery grip is a much more nimble piece of machinery…..With this tech appraisal you have really allowed me to appreciate the camera that I own. How often does that happen!?

Even though they are not exactly comparable from those shots, E-M5 is clearly superior, yellow stains on the Panny are still there, I had my hopes, I guess it will be tweaked G5 sensor.

About ISO and DXOMark: It is true that some cameras ‘lie’ about ISO in the sense that you have to use an higher ISO to obtain a comparable exposure, however a comparable exposure requires similar dynamic range among other proprieties. DXOMark measures ISO by ‘flooding’ the sensor, the more light it takes to flood the less sensitive it is, right? well, if you consider a camera with an huge dynamic range it might require lots of light to get flooded thus giving a skewed value as it could take the photo with the same exposure before it got flooded and just normalize it to the upper bound.

Sensors with big ‘bucket’ photosites get lower scores for ISO, even though they can measure light more accurately and with better SNR.

Real ISO is something very tricky to define as dynamic range and other proprieties vary when you change the ISO (giving it a bit of egg-chicken problem)

Maybe a way would be to measure the top by flooding and a minimum by defining an acceptable SNR for shadow detail (measuring DR with absolute values), then put the correct exposure somewhere in the middle and compare the cameras using that, even then, with DR discrepancies, things wouldn’t be very accurate either.

Oh well… I’m just babbling about it, GH3 is not looking bright (no pun intended) for stills, though it doesn’t mean it is looking bad. Panny still had to come with a proper sensor to kill that intrusive yellow noise, it got better but it is still there :<

People keep saying you can’t compare because the GH3 is pre-production, but did anyone actually read the text from the test? The first few words…

“We now have a final version of the new Panasonic Lumix GH3″

I’m no literary expert, but I think that means its not pre-prod.

why didn’t they use the same lenses?

Back to the link I provided. Please don’t look at the scores. Just look at SNR 18%. You shell see the real ISO preformences are quite closed for GH2, GX1, G5, NEX-5N, OM-D, 600D, and so on (within 1/3EV). What people expect to be improved in ISO is actually held up for a long time. That’s the fact. Again, I’m talking about the photography in real life not scores.

gH3 = dslr size

Om-D = m4/3 size

Any questions?…..

Just as with every other article that mentions anything Panasonic we have to read a load of BS Olympus fanboy whining. The Olympus Walt Disney JPEG’s may well appeal to many { hey ,a lot of folk like cartoons} , but they have little to do with reality . If you want to see the truth about a sensor take a RAW film turn off all NR { if you can } then if you must compare do so with another RAW file from the comparison camera treated the same way. Not forgetting to use the same damn lens on both cameras, and exposed properly according to the respective cameras actual ISO number.

The Olympus fanboy destruction of any forum where they exist is getting real old. The E-M5 is a great camera with an excellent feature set however it is less than a stop better than the GH2 and liable to be pretty much identical to the GH3. This is a great step up from the 12mp which was getting on , the E-M5 compared to the best APS models { the Sony 16mp }is behind by what sensor size would dictate .Which is hardly a surprise considering Sony make the best sensors in every sensor format it competes in so the major differentiating factor is sensor size. The E-M5 is the first and only DSLR by Olympus that is even competitive against the better APS models. FT failed miserably and is in its death throes the last remaining model the E-5 is just a 2007 E-3 body with a 2009 e-620 sensor in it so let’s not get carried away one competent camera { if you ignore AF speed and real high ISO quality} in the digital era does not make Olympus amazing .

There is no option to pick “The tester doesn’t understand white balance.” That’s what I would pick.