Need more range, extender of buy a tele lens?

Currently have a tamron 70200 and 2 full frame bodies. 200mm just not long enough to shoot soccer games. I am looking looking at several options:

1) pickup a cheap kenko 1.4 extender for <$200
2) spend around 1k for a 100-400 f4.5-5.6 mark 1
3) spend around 1k for a tamron f5-6.3 150-600

My needs are:

1) focusing accuracy
2) focusing speed
3) sharpness
4) price

Which option would you go for and if there is a 4th or better option?

kenwood33 wrote in post #17269383
Currently have a tamron 70200 and 2 full frame bodies. 200mm just not long enough to shoot soccer games. I am looking looking at several options:

1) pickup a cheap kenko 1.4 extender for <$200
2) spend around 1k for a 100-400 f4.5-5.6 mark 1
3) spend around 1k for a tamron f5-6.3 150-600

My needs are:

1) focusing accuracy
2) focusing speed
3) sharpness
4) price

Which option would you go for and if there is a 4th or better option?

Consider a Tamron 70-300mm vibration control lens. Examples:

Which 70-200 do you have? You should consider a used 1.4x II for $250.

For very infrequent work a teleconverter can work, but on midrange zooms they arent particularly satisfying. If you are going to use this very often the longer lens might be the better choice.

^ In his gearlist, it shows a Tammy 70-200 2.8 VC...

Ah... Didn't even see the link, thanks.

airbutchie wrote in post #17269505
^ In his gearlist, it shows a Tammy 70-200 2.8 VC...

There might be a lot of 100-400Ls hitting the market as soon as the new version starts shipping.

I'm biased.. I love my 100-400. (I've had it for 12 years).

But.. I've read some good things about the Tamzooka, so if I were starting over and choosing a long zoom, I might consider it.