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Archive 2018 · 600mm DO lens???

  
 
Vancouver47
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p.2 #1 · p.2 #1 · 600mm DO lens???


I suspect a 600 DO will only be shorter and only slightly lighter because of the size of the f/4.0 elements. Shorter will make it easier than the 600II to hand hold, but I doubt as much as we all hope.


Jan 19, 2018 at 10:11 AM
technic
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p.2 #2 · p.2 #2 · 600mm DO lens???


Vancouver47 wrote:
I suspect a 600 DO will only be shorter and only slightly lighter because of the size of the f/4.0 elements. Shorter will make it easier than the 600II to hand hold, but I doubt as much as we all hope.


Yes, a strong reduction in weight is only possible with different construction that doesn't need the large glass front elements, which constitute an increasing percentage of the total weight with longer/brighter lenses. So in longer DO lenses it is more about easier handholding and transportation (airline limits etc.) than about lower weight.



Jan 19, 2018 at 10:24 AM
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