1) It IS about going wider in the context of this debate. As far as I understand, TS was trying to equalize FoV by using a longer lens (And hence, thinner DoF). My suggestion of going "Wider" was within this context, which means that go wider than the lens you normally would have thought of using on FX. It just so happens that it's the same lens as that used in the DX sample. You can use an even wider lens to get more DoF by this method, you'll just end up with a smaller file (Pixel dimension-wise) when you equalize FoV. Not a big problem with a camera such as the D800.
In simple terms: At the same aperture,
- 50mm on FX = Same FoV as 35mm on DX, less DoF (This is where the TS is right now, by all accounts)
- 35mm on FX cropped down to equalize FoV of 35mm on DX = Same FoV as DX, same DoF
- 20mm on FX cropped down to equalize Fov of 35mm on DX = Same FoV as DX, even more DoF
2) I don't know why you think that my example is about focal length when starting from the first post, I am talking about the relationship between FoV, DoF AND focal length. Not one of the three, but all three.
3) What I suggested was a solution for a specific problem that the TS faces. It in no way means that all portraits have to be shot with DX. It obviously is not something applicable in every shooting scenario. I thought this was obvious.
This is a solution that has worked for me over the years, not just for FX and DX, but also for medium format.
In simple terms: At the same aperture,
- 50mm on FX = Same FoV as 35mm on DX, less DoF (This is where the TS is right now, by all accounts)
- 35mm on FX cropped down to equalize FoV of 35mm on DX = Same FoV as DX, same DoF
- 20mm on FX cropped down to equalize Fov of 35mm on DX = Same FoV as DX, even more DoF
2) I don't know why you think that my example is about focal length when starting from the first post, I am talking about the relationship between FoV, DoF AND focal length. Not one of the three, but all three.
3) What I suggested was a solution for a specific problem that the TS faces. It in no way means that all portraits have to be shot with DX. It obviously is not something applicable in every shooting scenario. I thought this was obvious.
This is a solution that has worked for me over the years, not just for FX and DX, but also for medium format.
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