I have been a lifelong Canon user who is thinking about switching to Nikon or Sony. I have quite a collection of Canon gear as I never seem to sell my old stuff after I purchase new gear. Currently, here is a list of the gear I use most:
- DSLR: 6D Mark II, 80D (also have 70D, 7D, 40D and the original Rebel)
- Canon Lenses: 100-400 Mark II, 300 F4, 70-200 F2.8, 85 F1.8, EF-S 17-55 F2.8 and a handful of inexpensive zooms and fixed length)
- 3rd Party Lenses: Sigma 35 F1.8 Art, Rokinon 14 F2.8
- Other: Canon 1.4x versions II and II
My primary applications are landscape (regular and HDR), birding, and astrophotography. I used to do a lot of sports photography and would like to start that again as well. I almost always shoot in RAW, usually using Av mode but have started using Manual especially with birding. For HDR I take 5 bracketed shots and combine them using PhotoMatrix Pro.
There are many things I like about my Canon gear. One area I have always been disappointed is the picture quality when using high ISO. This is the number one reason I kept upgrading cameras, was to be able to shoot at higher ISO. I feel my cameras are holding me back in two scenarios. First if I try to boost an underexposed shot in post I end up with a lot of noise. Second if I shoot at ISO over 1600 I see a lot of noise. The noise problem is partcicularly acute for birding and astrophotography.
I have been researching this a lot and learned about ISO Invariance. Also used DXOMark to compare sensors. From everything I read, it seems I would be much better off with a Nikon 750 or Sony A7R II or A7R III. The problem is my huge investment in lenses. I know you cannot put my Canon lenses on a Nikon. There are some adapters to let me put them on a Sony but I read mixed reviews. Looking for advice on what I should do.
Another option would be to sell the 6D Mark II (and maybe 7D and 70D that are not used anymore) and get a 5D IV. It would be an improvement over the 6D II and all my lenses would work, but it still falls short of the Nikon and Sony models in terms of Dynamic Range and ISO-Invariance. I attached a chart from DXOMark comparing Dynamic Range of three of the models.
Would appreciate any thoughs/suggestions about this. There are some decent EOY sales on some of this gear so I am thinking of pulling the trigger in the next week.