| View single post by Graham Whistler | ||||||||||
| Posted: Sun Mar 8th, 2020 09:34 |
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Graham Whistler
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You made me go back and look at the info for the days shoot. Early in day I was getting F13 and was on 800 ISO but these shots as posted were as light was going and were at 1000 ISO still 1/800 sec (I nearly always shoot shutter priority and fixed ISO) sorry as posted shot: F11 or F10. With this lens I am very happy if I can get to f16 as dof is a major problem with birds and very long lenses as I was shooting all day with 500mm plus x1.4 = 700mm. I agree with shorted focal length lenses F11 is best news but deffraction with small f nos does not seem to be the same problem is was with the older lenses in film days. Then when I did a lot of studio work with 4x5 and 8x10 view cameras I often shot at f32 and got very sharp pix but it was with long focal lenses and the hole is much larger for the same f no with a small camera! Deffraction is the bending of light round a small hole is about tec as I get! I was talking to another serious bird photographer and was interested to hear he always shoots with aperture priority and auto ISO. (He is a Canon person!!!) Last edited on Sun Mar 8th, 2020 09:40 by Graham Whistler ____________________ Graham Whistler |
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