Tripod collar on the 300, 400 & 500's
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Re: Tripod collar on the 300, 400 & 500 f2.8's
Thanks Neuro. Yeah, you're right, I geeked. I forgot the 500 & 600 were f4's, but you knew what I was talking about. You know we did rent some 500's last November but never took them off the tripods and I couldn't remember if they were removeable to lug around hand-held. Thank you.
Thanks Neuro. Yeah, you're right, I geeked. I forgot the 500 & 600 were f4's, but you knew what I was talking about. You know we did rent some 500's last November but never took them off the tripods and I couldn't remember if they were removeable to lug around hand-held. Thank you.
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Re: Tripod collar on the 300, 400 & 500 f2.8's
Neuro, have you used the 400 f2.8 and the 500 f4 and if so, why is the 400 roughly 4 pounds heavier? Is that 2.8 glass that much of a difference? The 500's are BIG and heavy, we'd like to get 400's but the weight....phew! Not to mention, the price...
Neuro, have you used the 400 f2.8 and the 500 f4 and if so, why is the 400 roughly 4 pounds heavier? Is that 2.8 glass that much of a difference? The 500's are BIG and heavy, we'd like to get 400's but the weight....phew! Not to mention, the price...
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Re: Tripod collar on the 300, 400 & 500 f2.8's
400/2.8 = 143mm diameter front element, vs. 500/4 = 125mm. A 14.4% larger diameter means a 31% larger area, and since elements aren't flat, larger elements are relatively thicker, too. So yes, it's the glass.
OTOH, the new 600/4 II and 400/2.8 II had some dramatic weight reductions, they're basically the same weight as the 500/4 MkI (the 400 II is 20 g lighter, the 600 II is 50 g heavier). That's thanks to fewer elements (including elimination of the protective meniscus lens in front of the front optical element) and more titanium in the construction. The 500/4 II shaved 1.5 lbs off the MkI (decent, but much less dramatic than the others - the 500 lost 8% weight, the 600 lost 28%). Of course, the cost went up. A lot. Bottom line, if you can handhold a 500/4 MkI, you can handhold the 400/2.8 II and 600/4 II.
Pieces Of E said:
400/2.8 = 143mm diameter front element, vs. 500/4 = 125mm. A 14.4% larger diameter means a 31% larger area, and since elements aren't flat, larger elements are relatively thicker, too. So yes, it's the glass.
OTOH, the new 600/4 II and 400/2.8 II had some dramatic weight reductions, they're basically the same weight as the 500/4 MkI (the 400 II is 20 g lighter, the 600 II is 50 g heavier). That's thanks to fewer elements (including elimination of the protective meniscus lens in front of the front optical element) and more titanium in the construction. The 500/4 II shaved 1.5 lbs off the MkI (decent, but much less dramatic than the others - the 500 lost 8% weight, the 600 lost 28%). Of course, the cost went up. A lot. Bottom line, if you can handhold a 500/4 MkI, you can handhold the 400/2.8 II and 600/4 II.
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I guess we want our cake and a lightweight cake too. Thanx for the tech response, as always, much appreciated. Who knows what we'll do, besides keep shooting with our current awesome equipment. Have a good weekend.
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