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Hi David
I had the Sigma 500mm zoom and found it to be a flexible and
useful lens. However I have chatted to a couple of people who had
the Sigma and who have since moved onto the latest Tamron and who
are very positive about the latest Tamron. They reckoned that it
was the best value for money in the range. (I haven't used it
myself). People were very kind in allowing me to try different
lenses so you might be able to find someone who can show you what
is possible with the Tamron and the Sigma before you buy.
I did weights in the gym for a year to build up my upper body
strength before getting my current rig which weighs 5kg plus 2.2kg
for the tripod. I am 66, but have no difficulties with using it,
handheld or on the tripod.
I suggest that you go online and check the reviews. Some of them
are sort of captured but many of them are excellent.
regards
Con
On 26/02/2015 5:47 PM, David Rees wrote:
David
I find my tolerance to weight has dropped with age. I went micro
4/3rds sometime ago. My Panasonic GH4 body plus a Panasonic
100-300 f/4
- 5.6 lens weighs just over 1 kg all up. On a full frame that
lens is equivalent to a 200-600
mm lens.
A Canon 600mm F4 is a much better lens of course, but it
weighs just under 4 Kg (not including a camera body) and costs
$12K!!!!!.
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