I have been toying with getting a 5DS R for my bird photography as well as being an upgrade for my 5DIII. There has been debate in various forums about Moire and colour artefacts, but they are minimal, a consensus that the 5DS R is about 10% sharper than he 5DS, but the difference gets less after sharpening, a huge plus that it has the same reach as an APS-C and the field of view of an FF, but the files are huge and the fps slow. Arthur Morris raves about the 5DS R for bird photography whereas Glenn Bartley considers it just a studio camera.
On Thursday, Canon announced a £250 cashback on the 5DS R and an official Canon retailer in the UK was selling one at a 20% discount. I couldn't resist the overall 28% discount and ordered one immediately to test for myself.
My first tests just using iso 12233 charts have indeed shown that before sharpening the 5DS R gives images distinctly sharper than from my 7DII, using the 300mm f/2.8 II and 100-400mm II with or without 1.4x and 2cxTCs. On sharpening, the difference is indeed lowered, but is still there. So, my 5DIII is about to be sold and I'll be using the 7DII and 5DS R as my stock cameras. By the way, the 100-400mm II, with or without the 1.4xTC stands up well against the 300mm f/2.8 II with the 1.4 or 2xTC on the 5DS R. I am going to enjoy the 5DS R. OK, the files will be huge and the fps lower, but the larger field of view with its easier locating of small birds and less clipping of large ones will be a serious compensation.
On Thursday, Canon announced a £250 cashback on the 5DS R and an official Canon retailer in the UK was selling one at a 20% discount. I couldn't resist the overall 28% discount and ordered one immediately to test for myself.
My first tests just using iso 12233 charts have indeed shown that before sharpening the 5DS R gives images distinctly sharper than from my 7DII, using the 300mm f/2.8 II and 100-400mm II with or without 1.4x and 2cxTCs. On sharpening, the difference is indeed lowered, but is still there. So, my 5DIII is about to be sold and I'll be using the 7DII and 5DS R as my stock cameras. By the way, the 100-400mm II, with or without the 1.4xTC stands up well against the 300mm f/2.8 II with the 1.4 or 2xTC on the 5DS R. I am going to enjoy the 5DS R. OK, the files will be huge and the fps lower, but the larger field of view with its easier locating of small birds and less clipping of large ones will be a serious compensation.