70-200 soccer shots

Oh yeah, forgot to ask, how did the AF keep up with tracking? Did you use AF-A or AF-C? I heard it does OK, and will allow you to keep a fair number of shots.

Dr4gon the shot you asked about is from a multiple shot set, the one up the post a bit was the first one the one you asked about I think was the third, maybe have a fourth, i will look and post them in order. As it got darker and on wider / longer shots where I had more 'targets' in the frame tracking was a bit slow, AF went back and forth a bit before setting. I have not used a truely superior quality zoom so I can't say how 'bad' it was, I used AF-C, I hope the next field is better lit and will see how it does there with tracking.

Don, as i have said before I really like and enjoy the 70-300 i think it is a great at hand, knock about zoom, I will use it oftenI think the IQ in good light is VERY good, I like the color, and it handles well. the Tokina 80-400 is one big old honking hardy piece of glass, i don't think those are the technical terms LOL. The extra 100mm is perfect for me and where I shoot sports from, if i am back farther or in the stands it will be my go to lens, provided I got the light!! the 70-200 so far seems to be perfect for me when the light goes down, I think it will 'work' even better for me at indoor events then it does at outdoor sports. but so far I am PLEASED. and for the price although it ain't cheap I have my 2.8 and will be able to buy a flash unit, not this week, or this month LOL. If I was doing this to try and make money at it yea I would upgrade and double the price and up the weight. Bit for what I am doing with it this lens is working out great, if only tamron could have bumped it to a 70-250mm, LOL always wanting more aren't we!

Quote:

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Originally Posted by seanhoxx

Don ... what I am doing with it this lens is working out great, if only tamron could have bumped it to a 70-250mm ...

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250mm at f/2.8? That would be something. Roughly a rather large primary element (or entrance pupil), to be sure. I calculate it to be around 90mm in diameter. Try getting a filter for that!

That is:
___F__
f/stop

where F = focal length in mm
& f/stop (in this case) = f/2.8

250mm/2.8 = ~90mm ... that's sizeable glass. The 300mm f/2.8 weighs almost 6 pounds. This would probably be around 4 or 4.5 lbs.

Currently, the TAMRON 70-200mm f/2.8 weighs only 40.6 ounces. That's 12 ounces less than the Canon EF 70-200mm f/2.8L IS USM or the SONY 70-200mm G SSM. Hey, that's an extra can of beer for the cooler! Sooo, for that extra 50mm of reach ... you tack on 2 more pounds!!!

Let's say we wanted more light ... and took it to f/1.8 ... oh yeah ... night vision!

Attachment 40608

The math:

250mm/1.8 = ~140mm diameter primary element!!! :eek: Get out the hernia belt!

Just to give you an idea of what we are talking about, here ... the Canon EF 400mm f/2.8L IS USM weighes about 12+ lbs ... the front element on it is around 145mm.

Quote:

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Originally Posted by seanhoxx

LOL always wanting more, aren't we?

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Sean ... that kind of "more" weight can wait! Holy crud!

LOL 90mm, 145mm front optics, camera lens, telescope, or uhf uplink device? the item in your photo I have used something like that, 3rd. generation soviet made starlight spotting scope, pretty darn cool when you need to see in the dark, not sure how that would interface with a DSLR sensor but if it could WOW night vision at 1.8 and then enhanced with light amplifiction plus a huge zoom ability, not talking small change here!
is it Sigma who makes like a 1000mm 2.8 or something like that? it's like $20,000.00 and weighs around 40 pounds!!, who uses that and where?

Concerning the SIGMA AF 200-500mm f/2.8 lens ...

Attachment 40660

I did the math on it and primary element is a bit larger than required, so I'm assuming there is some light loss due to the construction of the lens itself. It weighs 33 lbs! Think about that for a moment or two, the overall construction of most lenses is just air. :rolleyes:

When you add the 2x teleconverter on the end of it, it becomes a 400-1000 f/5.6 lens ... not still f/2.8

The T/C cannot alter the physics of the design. 2 f/stops of light are lost.

I would imagine this lens would meet a low-light requirement for indoor sports or one of Sean's football venues. ;)

Unfortunately (my back sure is not complaining, though :D ), it does not come in the SONY-mount. I guess they figured it would never be "handheld" ... LOL