Why was this?

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Olympus E-PL5
M. Zuiko 17mm ƒ1.8 | M. Zuiko 17mm ƒ2.8 | M. Zuiko 14-42 II | M. Zuiko 14-150 ED | M. Zuiko 45mm ƒ1.8 ED | M. Zuiko 75mm ƒ1.8 ED | M. Zuiko 75-300 ED II | Leica DG Summilux 25mm ƒ1.4 ASPH | Lumix G Vario 45-200 |

You could do a fine job on portraits using the least expensive kit lens, the 14-42mm. The upper end of that lens is prime portrait focal length, although it would be kind of slow for available light stuff. Outdoors or with flash it would be fine though.

I don't want to derail this thread into a discussion about Nikons, thanks.

Maybe the question you should be asking is "How do you think about the image quality of GX1 compares to Nikon D3200??"

You can compare the sizes of the two cameras here:
Compare camera dimensions side by side

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Cub
Panasonic G3, 14-45mm, 20mm, 45-200mm, Olympus E-PL1, 9-18mm, 45mm

For me, I could never use an m43 camera without a built in EVF as a portrait camera because I would want to use the viewfinder, but still have the hot shoe accessible for on-camera bounce flash or radio trigger. Therefore, I would limit my options to the G3, GH2 or OM-D E-M5 at this point in time.

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Olympus PEN E-PL1 | M.Zuiko Digital ED 14-42mm f3.5-5.6 L | M. Zuiko Digital ED 40-150mm f4-5.6 R | Zuiko Auto-W MC 28mm f2.8 | G.Zuiko Auto-S 50mm f1.4 | Zuiko Auto-T 135mm f2.8 | Fujian 35mm f1.7

Too late - you already did
But if you don't want to explain no sweat.....

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Olympus E-PL5
M. Zuiko 17mm ƒ1.8 | M. Zuiko 17mm ƒ2.8 | M. Zuiko 14-42 II | M. Zuiko 14-150 ED | M. Zuiko 45mm ƒ1.8 ED | M. Zuiko 75mm ƒ1.8 ED | M. Zuiko 75-300 ED II | Leica DG Summilux 25mm ƒ1.4 ASPH | Lumix G Vario 45-200 |

IMHO, I use Micro 4/3 and Nikon DSLR - each has its own advantages over the other, and I think they are very capable systems... and they co-exist in my bag.

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Kindest,
Dave
www.xdayv.com

GH3 | G3 | GX1 | 7-14 | 12-35 | 35-100 | 20 | 45
Nikon FX | Leica MM

They look more like neutral. I still prefer Panasonic's colors over Olympus. To me Oly colors are oversaturated, fake, way too digital.

The Nikon D5100 will give you better ultimate IQ.

If you want to travel light, though, think most people around here would tell you that m4/3 is close enough to not worry about the pixels.

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Kyle / E-M5 and E-PM2
Flickr Photostream

If the OP decided he wanted a GX1, I hope he jumped on the one-day special at Amazon.com last Thursday.

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Panasonic G5 and Panasonic GX1, Lumix 14-45mm f/3.5-5.6, Lumix 45-150mm f/4-5.6, Lumix 100-300mm f/4-5.6, Lumix 14mm f/2.5, Lumix 20mm f/1.7

Olympus E-PM2, Zuiko 9-18mm f/4.0-5.6, Zuiko 14-42mm f/3.5-5.6 II R, Zuiko 14-150mm f/4.0-5.6, Zuiko 40-150 f/4.0-5.6 R, Zuiko 15mm body-cap lens, Zuiko 17mm f/1.8, Zuiko 45mm f/1.8