출처 http://www.dpreview.com/reviews/panasonic-lumix-dmc-g7

대체로 라이벌 기종인 올림푸스의 화질과 비슷하지만 한가지 단점은 특히 1/160초 근처에서 셔터 쇼크가 발생한답니다.

전자 선막 셔터를 사용하면 셔터 쇼크는 제거되지만 노이즈가 좀 증가한다고 합니다.

However, the bad news is that there is visble shake in the G7's output, especially around 1/160th of a second. 
This isn't present in the Olympus (which was shot using electronic first-curtain shutter). 
The shake can be eliminated by using the G7's (fully) electronic shutter. However, while this eliminated the shake, 
it also adds noise, which in turn reduces the degree to which you can adjust the files before the detail is overwhelmed. 
Unfortunately, an electronic first-curtain option, which in most cameras that offer it eliminates shake while not introducing additional noise, is not available.

This isn't true in Electronic Shutter mode, though. Just as the additional noise started to creep into the exposure latitude images.
 A 2EV push of a file starts to exhibit more noise than natively shooting at ISO 1600 and after a 3EV push it's really obvious. 
Given how much of your image is likely to be made up of dark tones in the situations in which you might use high ISO settings, this difference is likely to be very obvious.

Conclusion - Pros장점

Solid image quality in both Raw and JPEG RAW나 JPG 모두 건실한 화질을 보여줌
4K (UHD) video 4K (UHD) 비디오
Built-in Wi-Fi with comprehensive set of features다양한 기능을 갖춘 내장 와이파이
4K Photo mode with clever pre-burst option for grabbing stills from video비디오로부터 정지 이미지를 잡아낼 수 있는 예비  연사 옵션을 갖춘 4K 포토
In-camera Raw conversion for post-shot re-processing카메라 자체에서  RAW  변환 가능
Super-fast focus for single AF acquisitions단사시 아주 빠르게 초점이 맞음
Impressive continuous AF and tracking with 6 frame per second shooting 초당 6 프레임의 인상적인 연속 AF 및 동체 추적
Well-proportioned hand grip그립 비율이 좋음
Extensive external controls다양한 외부 조작계
Conclusion - Cons단점

Mechanical shutter causes some softness at around 1/100th exposures1/100초(1/160초 아닌가?) 부근에서 기계식 셔터는 이미지를 소프트하게 함
Number of external controls make the camera seem more complex than it is다수의 외부 조작계는 카메라를 쓸데없이 더욱 복잡하게 함
Dated Q.Menu is over-complex Q 메뉴는 너무 복잡함
Touchscreen control tabs leave the screen a bit cluttered (though they can be disabled)터치 스크린 제어 탭은 스크린을 다소 번잡스럽게 함
Wi-Fi can be overwhelming and unnecessarily complex와이파이 조작할려면 숨막히며 지나치게 복잡함
Battery life quite limited for video shooting비디오 촬영시 배터리가 빨리 소모됨
Continuous AF performance not as good with Olympus lenses올림푸스 렌즈 사용시 연속 AF 성능이 떨어짐
Simplistic Auto ISO implementation오토 ISO 조작이 제한적임
Overall Conclusion

I started this review by stating that I believe the G7 is trying to be a non-specific ILC, rather than draw attention to its mirrorless nature. 
There are features, such as seamless viewfinder/LCD operation and using the rear screen as an autofocus touchpad while using the viewfinder, 
that no DSLR has yet matched but for the most part it's just trying to be an upper entry-level camera that is a DSLR in all but internal structure.

For this reason, I think it's fair to compare it to just about any mid-range interchangeable lens camera with a viewfinder. 
This puts it up against serious competition from the likes of Canon's EOS 750D/Rebel T6i, Nikon's D5500, Sony's a6000, 
the Fujifilm X-T10 and Olympus E-M10. Very capable cameras, every one of them. 
However, the Panasonic's video capability means it has at least one trump card to help distinguish it in this illustrious company.