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need more information on sony super telephoto zoom

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dctrkaushik

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May I know focal length range for maximum Aperature F/4.0 in SAL-70400 G. I hope it is from 70mm- 200mm .

Just for additional 100 mm of focal length , this lens is nearly three times heavier than SAL75300 and double heavy than SAL-70-300 G .Does that account for any additional unique feature ? Do you think at 300mm of focal length , SAL-70-400G would perform better than SAL-70-300G ?

Will greatly appreciate your response.
Regards ,
Kaushik
 
Somebody posted this (here and/or on dyxum) earlier:

70mm-85mm: F/4.0
85mm-150mm: F/4.5
150mm-250mm: F/5.0
250mm-400mm: F/5.6

So, not so much range for f4.
 
70300g is meant to distort on FF, wait for FF testing before you buy. 70400g is a better performer, but i'd expect that at the price...

Shame about the F4.0 longevity. would have hoped it'd at least go as far as 150mm.
 
thanks for the information. I think 70mm-85mm at F/4 could be useful for portrait shots ! Sometimes opportunity is offered to take close shot of big cats...and I guess F/4 would be great for that.
 
futile32 said:
70300g is meant to distort on FF, wait for FF testing before you buy.
70400g is a better performer, but i'd expect that at the price...
Click to expand...
300mm is not 400mm in any case. Different purpose lenses. Although on FF the 400mm is sure going to seem like a 300mm for those who have been using APS.
futile32 said:
Shame about the F4.0 longevity. would have hoped it'd at least go as
far as 150mm.
Click to expand...
The lens weighs a lot. How much more would you like it to weigh? That's the tradeoff, or at least one of them, more aperture means more weight. And it goes up fast. I have a 400mm f4, handholding is 15minutes tops and my arms are dead.

Walt
 
WaltKnapp said:
The lens weighs a lot. How much more would you like it to weigh?
That's the tradeoff, or at least one of them, more aperture means
more weight. And it goes up fast. I have a 400mm f4, handholding is
15minutes tops and my arms are dead.
Click to expand...
I agree with that Walt!

I have a sigma 100-300 F4 which is 1.4kg, and a minolta 400mm F4.5 which is 2kg. Personally, I can handhold the sigma, but the minolta is just too heavy and much more cumbersome to carry around -- but I love those extra 100mm :-)

a700 + minolta 400mm, (last week in Yellowstone)

 
Brett you are absolutely right . It seems that this 70-400mm lens would be better than Canon 100-400 mm and Nikon 80-400mm. Even for a short focal length range of 70-85 mm the F/4.0 would be great.
 
dctrkaushik said:
Vivec nice shot indeed. What was the distance between camera and the
subject ?
Click to expand...
Well, I think about 20-30 yards. Took a while to slowly approach him: here is the picture of me in action :-)



(I wrapped the white minolta hood in black stuff to make it less scary to animals, tripod was very necessary due to the wind and I used 2-sec shutter (for mirror lockup) with a wired remote trigger.

btw. note that I took it at F5, so in theory, the new sony lens should definitely be capable to taking the same shot -- only drawback is manual focus with a TC)
 
I took some pronghorn pictures about a dozen years ago in the Silver Creek hills in San Jose using a Minolta 400SI and Sigma 500mm f7.2. It surprised me how comfortable they can be when you're 20 yards off. I guess they know they can outrun anything on the continent.

By the way, nice shot.
 
Cetonid said:
I took some pronghorn pictures about a dozen years ago in the Silver
Creek hills in San Jose using a Minolta 400SI and Sigma 500mm f7.2.
It surprised me how comfortable they can be when you're 20 yards off.
I guess they know they can outrun anything on the continent.
Click to expand...
Yes, I didn't want to get any closer as not to disturb him.

However, I think the real (and sad) reason why they let you come close is that there is no hunting allowed in Yellowstone -- I heard that once animals get hunted they quickly learn to avoid humans! (that's why it is very hard to see Moose for example in Alaska (can you say Sarah Palin ;-) ), while they are reasonably easy to see in Yellowstone or the Grand Tetons)
 
Yeah, now that I look at the picture, I also think it is more like 40 yards -- amazing how close a 400mm lens brings you!
 
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