| Joined: | Wed Apr 18th, 2012 |
| Location: | United Kingdom |
| Posts: | 4186 |
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But in the absence of such assistance (and my inability to derive one) I must rely on intuition.
If the bird is small and distant, I need the longest lens I can afford and find acceptable to handle.
If the bird is moving I need a fast shutter speed, smaller aperture and spare field of view to help tracking.
Zoom lenses, DX sensors or low noise cropable images would seem to be the order of the day.
Having seen Graham's results from the 80-400 I find it hard to believe that this new lens will deliver images 5x better quality than it's 5x price tag and extra weight bring.
I don't see any mechanical advantage in having a switchable tc fitted to a zoom lens? Having the tc fixed to the 80-400 means you have 112-560mm available....more range than this new lens.
The only advantage of this lens over the 80-400 is the optical advantage of less glass ( when flipped out of the way) and the extra stop. BUT...if the subject's nature and behaviour requires more generous depth of field I would be stopping down beyond f5.6 anyway.
I still feel the quest for best image is about camera bodies.
Will a cropped D850 image using the 80-400 best the D500 using the same lens?
Last edited on Sat Jun 2nd, 2018 05:11 by Eric
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Eric