zoom has not been cheap, but had been specifically designed and constructed with fast and silent autofocus and continuous monitoring of the opening to allow the FA for recording changes video and exposure, without sudden changes in brightness.
Now that the G2 (along with most current cameras) is capable of capturing HD video, the distinctions between just being able to shoot in HD and control actually become more apparent. Stills shooters can get some advantage of the new sensor, higher resolution, but the main differences between GH2 and G2 are the ability to control the video recording process (both in terms of frame rate and shutter speed).
In the years since Olympus and Panasonic jointly announced the Micro Four Thirds models have been eight released to date, seven of whom share the same 12MP sensor. The only exception was the GH1 that despite his departure from reality is 12MP 14MP sensor. The sensor was slightly larger than the image circle of the format, which allowed him to provide images in different formats, maintaining the same image diagonal. And now follows the same pattern GH2 take 16MP pictures with its new, similarly large 18 MP sensor.
This sensor is capable of reading speed is much higher (120 Hz) than its predecessor, so a lot of benefits. Videographers will see an improvement in the quality of the highest quality output - 1080i output is derived from 60p or 50p capture, more than double up 24p or 25p in GH1. Faster reading also means that the AF system more frequently can check the accuracy of his approach, which promises faster autofocus (on lenses that can respond quickly enough). Finally, the faster reading means that the live view is updated 60 times per second (instead of 24fps displayed at 60hz), giving a smoother viewing experience with less breakage.
The electronic viewfinder has also been slightly expanded - it now shows 852 x 600 pixels compared with 800 in all - allowing you to display 16:9 and 3:2 provided without need for extensive crops such as before.
Compared with GH1 - key differences
The GH2 can look very similar to its predecessor from a casual glance, but there are some important differences between the two models. Let's take a look at the main changes:
- The new sensor - various aspects Live MOS with 18.3 million total pixels
- ISO range from 160 to 12,800 (compared to 100 to 3,200)
- capable of 1080p video at 60 or 50 fps (frames per second instead of 24 or 25), sensor output as 60i/50i
- Faster reading sensor promises faster AF and image viewer softer (less watery)
- Expand the coverage of viewfinder to match many aspects shots (852 x 600 instead of 800 x 600 pixels)
- LCD touch screen (as in G2)
- New and more modern looking menu screens
- G2, which combines the AF mode / pattern of control of the upper plate
- direct fire button movie moved to the top plate of the back of the camera
- control dial is moved from the front of the handle to the back of the camera
- buttons "measurement mode dedicated film and replaced by highly customizable Fn buttons
- Q menu button fell from the top plate to the back of the camera
- New Battery (DMW-BLC12E) with marginally lower capacity (1200mAh vs 1250mAh)
- A little heavier (394g versus 385g body only)
Comparison of key features (vs. G2 vs. G1)
Like the G1, the GH2 stands apart from its contemporaries by its G series of video recording capacity. The video GH2 is a much more serious shooting tool G2, and indeed most of its competitors - and both digital SLR without mirror. The GH2 video provides a specification similar to GH1, but with one important difference - double the sensor is no longer "until they leave the sensor in order to create higher-speed video (G1 sensor could capture 24 or 25 frames per second, which was then put in 60i or 50i footage.) In contrast, the last sensor can capture progressive (all frames) at 60 or 50 fps. Its production is still limited to 60i or 50i, because there is no common forms of distribution of 60p or 50p footage, but this will certainly improve the quality of output. GH2 In his "Movie Mode variable 'also has the ability to save images at a different capture - allowing slow motion or high speed impact.
From the point of view of the picture remains the GH2 brings very little that is 'new' to the G series, apart from its highest resolution - 16MP to 12.1MP. This makes the GH2 the higher resolution camera in the range of Micro Four Thirds Panasonic, and a maximum ISO of 12,800 does (at least on paper) the most versatile as well. Like the G2, GH2 LCD screen is touch, but also as the G2, that is not "mandatory." In other words, users upgrading to the GH1 GH2 has no interest in experimenting with touch technology can pretty much ignore it if they so wish. (Unfortunately, however, does not share the GF2 newly designed for touch interface.)
Multi-sensor looks
Like the Panasonic LX5 GH1 and before it, the GH2 uses a sensor on the relationship of various aspects. It is a little larger than usual for Four Thirds, and in any given aspect ratio (even 4:3), the camera only uses a crop of the total sensor area available.
At first glance this might seem strange, but the result is that the lens offers the same diagonal angle of view of independence of the selected aspect ratio, which is much easier to get an idea of the behavior of the lens. It also means maximizing the sensor area, get similar pixel count in all modes.