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Four Thirds... and more
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Oct 4, 2012 02:07:51   #
MtnMan Loc: ID
 
Nikonian72 wrote:
The name of the system stems from the ratio size of the image sensor used in the cameras, which is commonly referred to as a 4/3-inch type or 4/3 type sensor.

The usual size of the sensor is 18×13.5 mm (22.5 mm diagonal), with an imaging area of 17.3×13.0 mm (21.63 mm diagonal). The sensor's area is about 30–40% smaller than APS-C sensors used in most other DSLRs, but around 9 times larger than the 1/2.5" sensors typically used in compact digital cameras. Incidentally, the imaging area of a Four Thirds sensor is almost identical to that of 110 film.

The emphasis on the 4:3 image aspect ratio sets Four Thirds apart from other DSLR systems, which usually adhere to the 3:2 aspect ratio of the traditional 35 mm format.
The name of the system stems from the ratio size ... (show quote)


Thanks to you and EstherP. Now I know!

I wonder why the aren't making mirrorless cameras with the DX or FX sensors yet? That seems to me to be a logical progression to get the low noise performance of those sensors with the elimination of the mechanical shutters and mirrors.

I'm not sure that the 4/3 cameras eliminate the mechanical shutter...but if not it seems like they should. I presume they can get the same or faster effective shutter speeds electronically. Or maybe there is some limitation on getting fast shutter speeds?

They certainly use electronic shutters for video. I assume the DSLRs do that also for video...but don't know for sure.

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Oct 4, 2012 02:46:27   #
rebride
 
[quote=MtnMan]
Quote:



I wonder why the aren't making mirrorless cameras with the DX or FX sensors yet? That seems to me to be a logical progression to get the low noise performance of those sensors with the elimination of the mechanical shutters and mirrors.

I'm not sure that the 4/3 cameras eliminate the mechanical shutter...but if not it seems like they should. I presume they can get the same or faster effective shutter speeds electronically. Or maybe there is some limitation on getting fast shutter speeds?

They certainly use electronic shutters for video. I assume the DSLRs do that also for video...but don't know for sure.
br br br I wonder why the aren't making mirror... (show quote)


They are making mirrorless with APS-C and full frame.
Fuji X Pro1 and XE-1. APS-C. (rumours of FF coming)
Sony NEX7. APS-C.
Sony RX1. Full Frame.
Mostly with focal plane (electronic) shutters.

Reply
Oct 4, 2012 04:59:01   #
FilmFanatic Loc: Waikato, New Zealand
 
OK, just wanted to point out there is a huge difference between 4/3 and micro 4/3. 4/3 cameras and lenses look just like any Nikon or Canon but are not being actively developed by Olympus. Micro 4/3 are like the Oly OM-D, they are mirrorless and the regular 4/3 are not. Just before anyone makes any buying decisions they might regret later :)

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Oct 4, 2012 05:19:43   #
Boldstep Loc: Western Oregon
 
I purchased my Lumix G1 (Camera of the Year) in 2009 when they first introduced the 4/3 format and absolutely love it to this day. After YEARS of lunging around heavy equipment it has been such a blessing on my back and I didn't have to sacrifice features or quality. I now have my eye on the new DMC-GH3 as my next camera with.
Panasonic Lumix DMC-GH3 key features

16MP Live MOS sensor with three-core Venus 7 FHD engine
Magnesium alloy body with weather sealing (dust and splash proof)
1.7 million dot 16:9 ratio OLED viewfinder
ISO 200-12800 (extended range of ISO 125-25600)
6 fps continuous shooting
AF speed of .07 seconds
614k dot 3" OLED rear screen
Full HD 60p/50p video with 30p/25p option
MOV (h.264), MP4 and AVCHD formats
Video bit rates of 50Mbps in IPB and 72Mbps in All-I compression modes
Timecode support in MOV(H.264) and AVCHD formats
3.5mm mic socket and headphone socket
Four channel wireless control for the optional DMW-FL360L external flashPC socket
iOS and Android app control via Wi-Fi

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Oct 4, 2012 06:23:11   #
Spindrift62 Loc: Dorset, England. U.K.
 
Much smaller and lighter than a full size DSLR. Image quality of my Panasonic Lumix G2K is superb. I have the 14-45IS and 45-200IS lenses which equates to 28 - 400 on my Canon SLR's. Much less obtrusive than the DSLR and infact has now become my 'go to' camera to the extent that I haven't used the EOS kit for months. Has plenty of buttons, dials and programmes for those that like them but has plenty of scope for us photographers that like to make up our own minds about settings etc. Not particularly brilliant above 1600 ISO and colours seem very slightly saturated compared with the Canons. However the lenses are incredibly sharp and if I had to choose between the two sets of equipment I would go for the G2 for its compactness and versatility. I would also add that I have very large hands and don't have a problem with grip and the controlls of the camera which seems minute in comparison with the 'full size kit'. I do agree with the other UHH members, buy one with a view finder!

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Oct 4, 2012 06:48:31   #
bktham
 
Check out the Sony NEX series, or any of the new range of mirror less cameras. I personally have the NEX 7 and find it much better than my Nikon D200. I understand the 4/3 cameras are out selling the DSLR in many markets.

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Oct 4, 2012 06:49:13   #
bktham
 
Check out the Sony NEX series, or any of the new range of mirror less cameras. I personally have the NEX 7 and find it much better than my Nikon D200. I understand the 4/3 cameras are out selling the DSLR in many markets.

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Oct 4, 2012 07:23:07   #
kevinfairley Loc: Melbourne & Bali
 
I been using a Panasonic Lumix GH2 4/3 camera for a couple of years & am extremely happy with it, I have 5 lens from fish-eye, macro to 600mm. Pic quality is superb. Huge advantage is its small & light with all the advantages of the big camera's. Please check my website "kevinfairleysphotogallery.com"

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Oct 4, 2012 08:09:45   #
Brucej67 Loc: Cary, NC
 
You forgot the Sony RX-100 which is in the OP price range. I have this camera as a carry around all the time pocket camera and love it, it has a range of features and is 20.3 megapixles.

[quote=rebride]
MtnMan wrote:
Quote:



I wonder why the aren't making mirrorless cameras with the DX or FX sensors yet? That seems to me to be a logical progression to get the low noise performance of those sensors with the elimination of the mechanical shutters and mirrors.

I'm not sure that the 4/3 cameras eliminate the mechanical shutter...but if not it seems like they should. I presume they can get the same or faster effective shutter speeds electronically. Or maybe there is some limitation on getting fast shutter speeds?

They certainly use electronic shutters for video. I assume the DSLRs do that also for video...but don't know for sure.
br br br I wonder why the aren't making mirror... (show quote)


They are making mirrorless with APS-C and full frame.
Fuji X Pro1 and XE-1. APS-C. (rumours of FF coming)
Sony NEX7. APS-C.
Sony RX1. Full Frame.
Mostly with focal plane (electronic) shutters.
quote= br br br I wonder why the aren't makin... (show quote)

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Oct 4, 2012 08:14:54   #
Ansel Rosewater
 
My first experience using this Website has been wonderful.

Thank you all for your time and expertise.

Ansel

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Oct 4, 2012 08:55:15   #
MtnMan Loc: ID
 
rebride wrote:


They are making mirrorless with APS-C and full frame.
Fuji X Pro1 and XE-1. APS-C. (rumours of FF coming)
Sony NEX7. APS-C.
Sony RX1. Full Frame.
Mostly with focal plane (electronic) shutters.


Ah, cool. Thanks. Need to get out more. :-)

I also found the newly announced Sony NEX-6 16.1 MP Compact Interchangeable Lens Digital Camera with 3-Inch LED. It is supposed to be available in November. APS-C. And it has an available electronic viewfinder. It's pretty much what I was expecting...but much sooner.

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Oct 4, 2012 08:59:19   #
MtnMan Loc: ID
 
Brucej67 wrote:
You forgot the Sony RX-100 which is in the OP price range. I have this camera as a carry around all the time pocket camera and love it, it has a range of features and is 20.3 megapixles.



Wow, that looks like a cool machine. Does it have a clip on viewfinder?

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Oct 4, 2012 09:18:20   #
Boldstep Loc: Western Oregon
 
I currently have the 14-45 and the 45-200 and hope to pick up the 100-300 soon. I do a lot of work around show horses and it's so nice to have camera and both lenses in what is not much bigger than a fanny pack attached as a belt on my waist. I can stuff the camera away at a moments notice and have both hands free to work with the horse and not set it down. Love the lenses! Not sure where Leica's influence is within the partnership but it was a great marriage. Here is a link to a contest I am currently in. All taken with the G1. The picture 'Waiting for the Sun' has placed very high in international equine contests. The lighting is all natural and all I had to do is blur a little bit of writing on the wall in the background near his head.http://iframe.wizehive.com/voting/search/doversaddleryphotocontest-2012?key=352497afc9a63870672f8ebb14dc6d7e08b0622e&q=theresa+peterson&p=1&fields=8fb58e5c7d8083ce155cb6b8380a04d9cda9aebe%3Ap
And Please Vote too!

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Oct 4, 2012 09:51:03   #
jdventer Loc: Wallingford, CT, USA
 
Ansel Rosewater wrote:
From a glance at the equipment owned by people writing on this website, I feel like the beginner I probably am.

I've been using a Canon G9. It suits me because of its photographic qualities and its weight/size. I couldn't carry a SLR around.

I have been looking at the four thirds cameras, and frankly I have some questions to which I'd appreciate some advice.

Will a 4/3 camera be a significant improvement in photographic quality over my G9?

If so, is there at 4/3 camers in the $600 range that you can recommend?

Many thanks.
From a glance at the equipment owned by people wri... (show quote)

I've been using Olympus 4/3 cameras for years and have been quite happy with them. It seems that most of the new 4/3 development is in M4/3 (micro 4/3). The new products look great and are a big step up from regular point and shoot; know though that you will be committing to m4/3 once you start buying lenses.

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Oct 4, 2012 09:59:25   #
Brucej67 Loc: Cary, NC
 
No just the LCD screen, however whatever they made the LCD I see the picture or view even in bright sunlight behind me.

MtnMan wrote:
Brucej67 wrote:
You forgot the Sony RX-100 which is in the OP price range. I have this camera as a carry around all the time pocket camera and love it, it has a range of features and is 20.3 megapixles.



Wow, that looks like a cool machine. Does it have a clip on viewfinder?

Reply
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