This is a great lens. Worked very well on dSLRs and now on my Z series cameras. 180-400 is a great range for the wide life photographer and the drop in 1.4 TC is very helpful to extend the range.
I have not seen a replacement on the road and the nearest replacement lens I have found from CNS (Canon, NIkon, Sony) is the 200-500 or 200-600 lens. These are great lens but I don't think that the Sony or Canon current lens or the roadmap Nikon (1) will have the build quality of the 180-400 (S lens in Nikon Z system) and (2) are fixed aperture.
Do you think that this lens should be updated to a Z (S) series lens? What would you like to it to be (of course be reasonable - no 14-800 F2)?
A few ideas I have update the lens to a Z mount, shave a pound or two off it (look at the 400 F/4.5 as a example of light weight lens), possible extend the range either on the wide side to 150 or so or on the long end to 420/440. The longer the lens gets the bigger the front element will need to be and this will result in weight gain. Replace the 1.4 TC with a 1.7 TC. This would extend the range from 550 to 680, though a cost of another half stop of light. Not sure if this possible without sacrificing optical quality, but include fresnel elements (i.e., a PF lens).
Thoughts?
I have not seen a replacement on the road and the nearest replacement lens I have found from CNS (Canon, NIkon, Sony) is the 200-500 or 200-600 lens. These are great lens but I don't think that the Sony or Canon current lens or the roadmap Nikon (1) will have the build quality of the 180-400 (S lens in Nikon Z system) and (2) are fixed aperture.
Do you think that this lens should be updated to a Z (S) series lens? What would you like to it to be (of course be reasonable - no 14-800 F2)?
A few ideas I have update the lens to a Z mount, shave a pound or two off it (look at the 400 F/4.5 as a example of light weight lens), possible extend the range either on the wide side to 150 or so or on the long end to 420/440. The longer the lens gets the bigger the front element will need to be and this will result in weight gain. Replace the 1.4 TC with a 1.7 TC. This would extend the range from 550 to 680, though a cost of another half stop of light. Not sure if this possible without sacrificing optical quality, but include fresnel elements (i.e., a PF lens).
Thoughts?