Andrew Reid sur EOSHD.com propose un article intéressant en comparant le Panasonic GH1, avec son firmware hacké, au Canon 5d Mark II. A considérer avec toutes les précautions qu’imposent ce genre d’exercice, car à ce niveau de performance, le choix pour l’un ou l’autre se fait sur des détails et est souvent lié à des préférences et des besoins personnels.

D’ailleurs, Andrew Reid se garde de toute conclusion définitive sur le sujet en se concentrant sur les points forts et points faibles de chaque boîtier :

« GH1
+ Very respectable image quality
+ 44Mbit native 24p AVCHD with long recording times
+ Compatible with very well priced FD lenses and some interesting c-mount options
+ Small and light, very usable especially thanks to articulated screen and a good kit lens with video features
+ EVF built in
+ 3:2 aspect ratio screen
+ Incredibly cheap – astounding image quality at the price point
+ Clean image up to ISO 800, you can get away with ISO 1600 for certain scenes
+ Crop factor good for telephotos and macro
+ Slightly sharper image at 1:1 than 5D Mark II
+ More manageable depth of field, more practical

- Noiser sensor at high ISOs than 5D
- Lack of full frame may disturb those who haven’t yet found a lens selection to work around it
- Fast wide lenses impossible to find, although Tokina 11-16 F2.8 comes closest
- Mainly plastic build quality and looks a bit like a toy
- Cannot change aperture on most modern Canon EF/EFS or Nikon mount lenses

5D Mark II
+ Shallower depth of field at same aperture and focal length as GH1
+ Better low light performance in terms of colour saturation and fixed pattern noise
+ Better dynamic range
+ Better build quality
+ Fast wide angle options available, some very affordable like Sigma 20MM F1.8
+ Very nice stills camera free with all purchases

- No slow motion capability due to lack of 720/60p
- Flat back screen is a pain in the neck for tall people or shooting on smaller tripods
- Handling is very traditional, needs good support and Z-Finder
- Still very expensive compared to 550D and GH1
- Slightly muted image, duller than GH1 with same settings & lens, not as bright
- Recording format limited to 12 minutes per clip
- Live view operation is a bit clunky
- AF and OIS very noisy and AF not operational at all during recording
- Needs more expensive lenses to get the most out of image quality and must cover full frame sensor »

via EOSHD.com