Lumix G3 User Review by John Nicholson

Real World Tests

So what’s the high and low ISO performance actually like?

To give you a meaningful example I shot the same subject at both base ISO160 and ISO1600; the point where I found detail loss begins to show. The two higher sensitivities of 3200 and 6400 are still very useable in the right circumstances though and not ‘for emergency use only’ as used to be the case; see the third example shot below.

Example 4. Base ISO160 – Natural light plus off-camera flash, 1/60th @ f/5.0, Aperture priority, 45-200mm lens @ 124mm(Note: I deliberately went for a dark background on this shot as such would emphasise any noise present at the G3’s base ISO. It’s possible though that reducing the image for display on this site will actually introduce artefacts not present in the original file. Check out the full res’ version on Flickr -link at end of review- for accuracy)

As you can see from the second shot the level of noise control/removal is remarkably good in G3 JPEGs. Viewed in Silkypix, with all sharpening turned off, the RAW of the ISO1600 image also demonstrates much less noise than I was expecting while the ISO160 RAW is effectively noise free. This is perhaps proof that Panasonic’s research into lower noise versions of the Four-Thirds sensor is really delivering results.

Example 6. ISO6400 – Dim tungsten light plus on-camera TTL flash, 1/80th @ f/5.6, Aperture priority, 45-200mm lens @ 200mm, Exposure Compensation -2EV(Accidentally set!- hence this shot is a little dark)

The lighting conditions for the above shot were pretty grim and yet the G3 managed to deliver a usable JPEG at its maximum sensitivity. It was during this shoot that I experienced several of the ‘handling issues’ referred to earlier, principally because I was working quickly, eye to viewfinder, trying to catch interesting moments. My thanks to Acoustic Chairs for being willing test subjects.

In summary, in-camera produced JPEGs are effectively noise free up to ISO800, show a slight detail loss (but very little noise) at 1600 and only begin to really suffer at 3200 – though again are greatly improved over past models. At ISO6400, the top sensitivity on offer, obvious artefacts are present, particularly in darker areas, but it has to be said that this is a remarkable performance by the standards of any size of sensor. Untreated RAW files (viewed for now in the copy of Silkypix 3.1.6 supplied with the G3) look a little soft and do start to show noise in darker pictures around the ISO400 mark. However, the nature of that noise, right up to 6400, is surprisingly ‘smooth grained’ and ideal for effective removal by processing in one of the more advanced RAW development engines – something I’ll report on in detail once Adobe catch up with the arrival of the G3 as I’m not convinced the current edition of Silkypix is quite up to the task of optimally dematrixing RAWs from the new sensor. I came to this conclusion after loading some of my ‘best’ G1 RAWs into Silkypix for comparison, where they suffered in a similar fashion when compared to their appearance in Lightroom/ACR.

The noise performance of the G3 is another major advance. Whether or not it’s a ‘killer’ feature will depend or your own shooting style, but it’s hard to deny that it will enable us all to take better pictures in difficult circumstances.

But does the G3 produce better shots than the G1/G2 at base ISO?

I know that’s a question that many members will be asking. The quicker answer is ‘yes’ as far as I’m concerned. However, you really do need to compare two identical shots at full 1:1 resolution to see the improvement as; fine detail resolution aside, the difference can be fairly subtle. Here’s an example using two almost identical shots at the base ISO for each model.

Example 7. G1. ISO100 – Natural light, 1/8th @ f/10.0, Aperture priority, 45-200mm lens @ 144mm

Example 8. G3. ISO160 – Natural light, 1/8th @ f/10.0, Aperture priority, 45-200mm lens @ 147mm

These shots were pattern-metered and I think it’s just a coincidence that both cameras chose the same exposure settings in the varying natural light. What you may notice even at this reduced resolution is that the G1 shot looks more saturated than that from the G3. Comparing the histograms of the two JPEGs in Lightroom shows them to be quite different with the G3 having a more even distribution of colour levels that the G1; which very nearly clips the red channel in this shot. This is all open to interpretation but my thoughts so far are that the G3 is even more neutral at its default settings with ‘hot’ subjects like this than the G1. I’d call that a welcome advance, especially for those of us who shoot RAW.

Note for newbies: Saturated reds have always given digital cameras problems; often clipping (losing all detail) well before other colours in the scene.

Everything I took over the week with the 16MP G3 indicated that it is capable of taking better pictures than previous G’s using the original G1 type 12MP sensor. You won’t see a staggering difference in every shot, but it wins every time with highly detailed and textured subjects.

Has the Dynamic Range Improved?

I don’t have a lab full of test equipment, so to test the G3’s dynamic range I looked for shots that would be difficult for the camera to handle.

Example 9. ISO160 – Natural light, 1/6th @ f/10.0, Aperture priority, 45-200mm lens @ 175mm, EC +1EV

This shot of a white porcelain cat on a black silk embroidered cloth was a deliberate set-up intended to push the G3’s dynamic capability to the limit. After pattern metering, plus 1EV exposure compensation was required to bring out the black embroidery – no surprise there; you’d need to manually adjust a shot like this with any camera. What was gratifying is that the shot’s histogram only shows clipping where you’d expect it to, in the deepest shadows and the small highlights in the cat’s highly reflective glaze.

Studio set-ups like this are one thing, but I also wanted to find some real-world examples.

Example 10. ISO160 – Bright day light, 1/100th @ f/8.0, Aperture priority, 45-200mm lens @ 200mm, iR & iD on

This shot isn’t perfect (my fault in this case) but it does show pretty good handling of a naturally wide dynamic range subject. The G3 has managed to maintain most of the feather detail in both the extremely white and mostly dark ducks. From the many shots I’ve taken at this location over the years I’d say that the G3 did very well on this shoot (battery performance aside). So, I think the G3 demonstrates some improvements in dynamic range handling over previous models. Don’t expect miracles though, as I found out on the last shooting day it’s still pretty easy to blow bright skies in difficult conditions.

See the Lumix G3

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Member Comments

  1. chris55 posted a comment on 22 June 2011 at 7:23 pm

    I knew you, from your amazing photos and your technical advices about photography. Now I see your ability to writing technical reviews. Excellent job, comprehensible text!.

  2. markansell posted a comment on 23 June 2011 at 9:26 am

    Hi John, enjoyed the review, but felt it lacked some techie points i was interested in, like how the new touch screen menu’s navigated, i had a brief ten mins the other day in Jessops, and could not for the life of me find the new toy picture mode anywhere, would have liked to see some screens like pin point focus mode in action but guess you weren’t able to do this.

    As i said, enjoyed the review anyway mate, well done.


  3. mrt posted a comment on 23 June 2011 at 9:29 am

    John, many thanks for this real world, honest and comprehensive (given the time you’ve done it in!) review. Not only has it helped me in considering the G3 as a possible next purchase, but it has also encouraged me to improve my own photography and think more carefully about all aspects of shooting pictures. Your knowledge is infused with enthusiasm, a combination which is encouraging to all photographers whatever stage they’re at. Thanks.

  4. stanegate posted a comment on 23 June 2011 at 2:04 pm

    Thanks John, as a very new user of the G3 I found your review extremely helpful, particularly as you have been so much more systematic than I in your approach to the camera’s capabilities. Personally I find it more comfortable to support the camera with my left hand under the lens, leaving the right hand free to operate the controls. To begin with I found it too easy to touch the pad without intending to. I agree with your comment re a second battery. Shirley

  5. tris1972 posted a comment on 23 June 2011 at 6:03 pm

    John, cracking review, and while i am not considering purchasing the G3 i found it a very informative read. Tristan.

  6. bigred posted a comment on 24 June 2011 at 10:11 am
    Expert User

    Thanks all 🙂

    Mark, you couldn’t find a ‘Toy’ mode because there isn’t one – you’re thinking of the new Olympus Pen models. My aim with the review was to look at the quality and capability advances the G3 represents both as an individual model and as an indicator of the future of the G System. I should think that full blow-by-blow operating instructions will soon be available for those that want them for study from the Panasonic main site in the form of the excellent PDF advanced manual for the G3.


  7. stanegate posted a comment on 24 June 2011 at 3:03 pm

    John, the manual comes on CD and is included in the new camera pack. I thought it too hefty an animal to print out, and much of it is basic common sense (how to attach camera strap!!) But it is possible to print out only those pages one needs and refer back to the CD when necessary. It would probably be useful for potential buyers to have access as a guide to the G3’s potential. Shirley

  8. bigred posted a comment on 24 June 2011 at 3:17 pm
    Expert User

    I agree entirely Shirley,
    As mentioned in the review I didn’t have access to the full PDF manual at all for the first few days. Chris had to get permission for me to download it from a company server as at the moment, unlike those for older models, it’s not available from the main Panasonic Lumix site. I’m sure that situation will change in future as it would be a real resource for potential buyers as you say. In my own case it was the only way I discovered in the short time allowed that some features like DoF and Shutter Speed previews were still available with the G3 – if you knew where to look in the extensive menu system 🙂

  9. geoffreybrown posted a comment on 24 June 2011 at 4:07 pm

    Upgraded my G1 to a G3 only two days ago, so far been very impressed with the new camera and still finding out the various features accessible via touch screen. Not yet able to register with Panasonic as it does not yet seem to be on their camera list to register!

  10. markansell posted a comment on 25 June 2011 at 12:13 pm

    Hi, john, the Toy mode i was looking for is in fact miniature mode, sorry i got the name wrong mate, here is a quote from the DPR preview.

    Naturally the GF3 also gets a couple of brand-new features all of its own. There’s an additional creative filter called ‘Miniature’, a variant on the currently-fashionable faux-tilt lens look that employs a touchscreen interface to allow the user an unusual amount of control over the final effect.


  11. bigred posted a comment on 25 June 2011 at 12:53 pm
    Expert User

    I think it this case Mark, though it may sound like heresy, DPR may have got their facts in a twist. There’s no mention of such a mode in either the Basic or the (comprehensive) Advanced PDF manual for the G3 that I can find; and I also can’t find any mention of it in Panasonic’s online G3 blurb. I could be wrong though, have any actual purchasers discovered it? I’ll also take this opportunity to repeat my forum request that owners test their pop-up flash and let me know if they have an under-exposure problem with it.


  12. bigred posted a comment on 25 June 2011 at 2:30 pm
    Expert User

    Ah, just found the bit you quoted from DPR – in the GF3 review 🙂 Easy mistake to make.

  13. markansell posted a comment on 25 June 2011 at 4:21 pm

    @ John

    Hi John, i just found this snippet from the Panny press release.

    Two modes – Photo Style and Creative Control – let users at any skill level get creative with their photos. With Creative Control, the user can choose the most-frequently-used color modes (Expressive, Retro, High Key, Sepia, High Dynamic and newly added Miniature Effect*4 mode) with easy access. In Miniature Effect mode, the peripheries are defocused while saturation and contrast is emphasized so the photos look like a diorama. The Photo Style mode revitalizes the conventional film mode with settings in Standard, Vivid, Natural, Monochrome, Scenery, Portrait presets while enabling finer adjustment of contrast, sharpness, saturation and noise reduction.

  14. bigred posted a comment on 25 June 2011 at 4:54 pm
    Expert User

    The Creative Control options (Expressive, Retro, High Key, Sepia, High Dynamic) are in the G3 manual, but there’s no mention of any Miniature Effect in the version supplied to me. Perhaps someone from Panasonic would care to clarify this matter?

  15. bigred posted a comment on 26 June 2011 at 5:10 pm
    Expert User

    I’m pleased to report that the full ‘Advanced’ operating instructions for the G3 have now been made available online. You can download them from:

    They are the same Ver 1.0 edition as those I was using for reference during the review.

  16. bigred posted a comment on 27 June 2011 at 12:15 pm
    Expert User

    Dave has just confirmed on the forum that the pop-up flash on his G3 seems fine exposure wise – so if there was in fact a problem with the review sample (it was probably just a negative exposure setting left by a previous reviewer) then it wasn’t representitive of the model as a whole.


  17. johnnewman posted a comment on 28 June 2011 at 4:42 pm

    Very good review John. I’ve not been around the forum for a while as I deserted MFT for a while as I felt the G1 had shortcomings for my particular needs at the time. However, I’ve been following various threads and am seriously thinking of returning to the Panasonic fold. I may still keep my Nikon for (say) sports shooting but am looking at the GH2 or the G3 for general work and your review was very helpful. I’m thinking that the GH2 might be the best bet (for me) and wonder if you had any thoughts between the 2 models. I do like dabbling in HDR so the GH2 seems to win on this with better bracketing, plus the multi aspect sensor but, apart from these 2 matters, do you consider either of the two a clear winner or not?

    Thanks for any comments


  18. bigred posted a comment on 28 June 2011 at 6:23 pm
    Expert User

    I’ve not had the opportunity to test the GH2 myself John, so I can’t really make an informed comparison between it and the G3. The few months between the release of the two 16MP models is a very long time in terms of chip development for a company as expert in this area as Panasonic- so until someone can do a direct comparison there’s no way of being confident that the ‘pro’ GH2 actually takes better shots than the G3. However, as a demanding photographer it’s probably safe to say that you’ll find the handling better with the larger GH2 body – and we both know that’s a very important factor when shooting real world subjects.

    I suspect (though I’m not privy to any inside info on the matter) that it won’t be long before we see a GH3. In the meantime it’s worth quizzing existing GH2 owners in the forum (there are several experienced users now) about their thoughts on the camera’s actual performance. I certainly wouldn’t judge the GH2 by it’s mixed reception from magazine reviewers – who seem to either love or hate it in equal measure 🙂

    Hope that helps a bit,

  19. lumabike posted a comment on 1 July 2011 at 8:46 am

    An excellent review John.

    I am pleased you discovered the touch screen focus so useful. I find it an asset on the G2, especially for macro shots. But it has to be on a tripod to make the best use of it.

    I am also pleased to see the High ISO shots are now worthy of comparison with the popular makes using larger sensors. A brilliant achievement by Panasonic. It makes me happy to have placed my money behind the Panasonic name. A brave act in a photo club club of nearly 100 members.


  20. dorudind posted a comment on 3 July 2011 at 8:32 pm

    Hi John
    Great review and sounds very promising especially as all reports seem to indicate the image qualities at Higher ISO are very good and more noise free.
    My question today concerns the lower ISO on this camera, is it as noise free from 200-400?
    The reason I ask this is because recently I read a couple of reviews with discussions over this, and the flow was about the lower ISO having more noise now, on the G3.
    In your opinion as some one who has tested this camera, do you think that noise at lower ISO has deteriorated?
    Would appreciate your feed back, so that I can consider upgrading my GF1, as the noise on the GF1 is very bad after 400 ISO.
    Thanks and best wishes

  21. bigred posted a comment on 3 July 2011 at 9:30 pm
    Expert User

    Hi Neda,

    As I’ve pointed out in the main body of the report, noise is much improved over the first generation 12MP sensors at all available ISO settings from 160 to 6400. I found no evidence of increased noise at base or low ISO’s with the G3; just the opposite in fact. With RAWs it’s hard to spot any noise at all untill ISO400 and even then it’s sparodic, low level (some grain in darker areas) and easily treatable. By ISO1600 noise is present thoughout the RAW but is still fine grained and very manageable – though removing it will sacrifice some fine detail. At 3200 and 6400 you will see artifacting – but only on a level that’s pretty comparable with most larger camera sensors.

  22. dorudind posted a comment on 6 July 2011 at 8:05 pm

    Thanks John
    Sorry I had to ask you this again, and thank you for pointing it out again!

  23. nippa posted a comment on 7 July 2011 at 8:49 am

    I’ve only had the G3 for a couple of days and without doubt the smaller size takes some getting used to.
    In test reports I’d read that the jpeg performance was much better but I still find that faces seem too red and like many reviewers I have also found underexposure to be a problem. Noise is not an issue and ISO 800 is totally usable!

    The other great thing about the G3 is its focusing speed and this makes it far better with the telephoto lenses when taking action.
    However , unless you take action shots or low light I don’t see a compelling improvement over my G1 and GF1. The G1 is far nicer to handle.

  24. bigred posted a comment on 7 July 2011 at 5:32 pm
    Expert User

    Hi Dennis,

    I’m not saying you’re wrong (different camera/conditions/subjects) but I’m sticking with what I said on page 5. I found auto-exposure to be ‘technically’ very accurate, which is all that I think you can expect from any camera without a little human intervention. Thanks to some hard work by Gordon I’ve only this morning had a chance to properly examine some auto-exposed GH2 RAWs (the other new model often accused by reviewers of having this supposed tendency) and again their histograms in Lightroom are bang on; far left to far right but without clipping either end of the range except in exceptional circumstances.

    With faces I photographed several subjects with the G3 and the only inaccurate colours I recorded were due to artificial light sources. The one on page 5, taken outside on a bright but cloudy day, seems if anything a little pale to me for preference – but it’s an accurate recording of the subject’s complexion. All the test shots were taken in Aperture Priority mode BTW (as that’s how I normally shoot), it’s possible that scene modes may alter the balance of pictures if employed.


  25. bigred posted a comment on 12 July 2011 at 11:37 am
    Expert User

    Just a note to say that I’ve now added a short video of clips taked with the G3 to the full resolution test shots hosted on my Flickr site: [url][/url]

    These were taken at 1080i but have been compiled in Premiere v9 and then saved out at 720p 25fps (Flickr’s maximum allowed quality). Re-rendering again by Flickr’s display engine hasn’t done a lot for their quality (I wouldn’t recommend viewing full screen) which was excellent straight out of the camera. Still, they do illustrate some of the points I made in the review.

  26. bigred posted a comment on 24 August 2011 at 11:45 am
    Expert User

    Thanks to the availability (at last) of ACR 6.5 and Lightroom 3.5 Release Candidates I’ll be adding ‘worked from the RAW’ versions of the G3 test shots (plus many more) to the Flickr full resolution set over the next few weeks.

    Early results are just as great as I had hoped they would be! 🙂


  27. image posted a comment on 24 August 2011 at 4:13 pm

    Just purchased a G3 body to use the lenses I had for my 2 year old GF1. Moved onto the GF1 after finding SLR cameras too heavy at my advancing years after a life time in professional photography.
    The G3 technology is astounding print quality on 18″ x 12″ prints processed from raw files on a Fuji frontier machine and upsized in Genuine Fractals software match the quality and better than my old Hasselblad film camera.

  28. bigred posted a comment on 4 September 2011 at 12:39 pm
    Expert User

    Having finished adding ‘developed from the RAW’ examples to the Review Set on Flickr I’ve now re-edited the captions of all the pictures in that full resolution set to reflect my conclusions (which remain very good) regarding the G3’s overall performance.

    The set continues to attract a very large number of visitors (the vast majority being other Flickr users, though there have also been many from this site); so I thought it was important to ‘flesh out’ the captions for those who may not read this full review.

    The URL remains:

    Job Done I think 🙂

  29. weeman posted a comment on 22 September 2011 at 5:54 pm

    Good review; I too cannot find any miniature effect mode, find the flash weak? I have trouble under tungsten lighting with yellow shots (could just be me ?)

  30. bigred posted a comment on 23 September 2011 at 10:10 am
    Expert User

    Hi Ed,

    There is no minature mode on the G3 (as there’s no Pin-point AF on the GH2), these subtle additions tend to get added from model to model so the slightly later GF3 has it whereas the G3 doesn’t.

    Your not alone in noticing the bias in tungston shots (even with WB set to tungston rather than Automatic). It’s easily corrected in post if you shoot RAW, or you can get it right in camera by setting a custom White Balance temperature for the environment (not difficult – see Advanced manual).

    As for the pop-up flash I had some real problems, as noted in the review, but in general users semm to think it’s OK. In the end there’s only so much you can expect from a tiny built-in unit. For serious work I always use a Metz AF50.

  31. bigred posted a comment on 13 October 2011 at 2:45 pm
    Expert User

    Additional (Oct 2011):

    Since writing this review I’ve had the opportunity to work with the GH2 body. It is equally capable of taking great pictures with very low noise and its video capabilities are second to none. So I can now say with confidence that both ’16MP’ models are capable of great performance, with the GH2 more suited to those of us with larger hands and a wish to explore creative video techniques.


  32. bigred posted a comment on 19 October 2011 at 1:47 pm
    Expert User

    There is now a much better 720p HD version of the G3 video clips compilation on YouTube:


  33. bigred posted a comment on 20 June 2012 at 1:15 pm
    Expert User

    Please Note: I’ve started deleting the shots associated with this review from my Gallery in order to make room for newer, more interesting, material. The original full resolution copies (plus their worked from RAW versions) will remain available at my Flickr site (links in text) for those still interested in viewing them.


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