Realised that the Sigma 70-200 f2.8 has a 77mm filter thread [ senile dementia is never far away ]. Anyway I set things up and tried things out. I have four of the graduated filters but they are not marked as to their strength. The following photographs are of the same thing, all same settings on camera. The last one is with no filter used. The first four are using each different graduated filter. First try at using the things but it seems to work.
5Ds 91mm f22 1/50 sec ISO 100 [ very slight crop in LrC to convert to Jpeg ]
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5Ds 91mm f22 1/50 sec ISO 100 [ very slight crop in LrC to convert to Jpeg ]
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