GH5 crop factor vs GH4 (C-mount lens & native M43 lens)

[Ian Edward Weir]

I wanted to ask those who have the GH5 and who have owned the GH4. Does C-mount glass still work on the GH5 being it's crop factor is so much wider? Also if you have the Voigtlander 25mm or 17.5mm, is it that much wider on the GH5 and has no vignetting? Thanks.

[mercer]

They should work but probably nothing wider than 25mm. With the GH4, G7, GX85, G85 you could go as low as 12.5mm with some 1" c-mounts.

[Ian Edward Weir]

20 minutes ago, mercer said:

They should work but probably nothing wider than 25mm. With the GH4, G7, GX85, G85 you could go as low as 12.5mm with some 1" c-mounts.

Thanks. This video shows the difference in crop. So I guess you get wider with native lens that were designed specifically for MFT. 

 

[tweak]

You can use 4K crop mode which ends up almost the same crop as GH4 4K and is still actually 4K (or so a few of my friends have said).

[PannySVHS]

 

Also, in your posted video one can see this: with ultra wide lenses the effect on perspective and z axis is strong when changing crop.