t4i and 1.4 extender

[peety3]

ive been reading a lot of reviews on line and cant really find a true answer. some say to put tape on some of the pins but the canon website says in wont work on my camera. has anyone used one on a rebel series camera if so how bad is it when they say autofocus is slow ? ill be getting a new lens in about a month , either a 300f4L or 400f5.6 and im thinking of an extender for a little extra reach for when the critters are a little far.

Step 1: buy the lens you want.
Step 2: use the lens you bought.
Step 3: buy the TC.
Step 4: tape the pins if you bought the 400/5.6L and you want AF.
Step 5: use the TC.

You're at step 0.5. Long way to go before taping the pins is a factor.

[neuroanatomist]

Agree with getting the 100-400L. I bought a 300/4L IS used, ended up selling it and getting a 100-400 for the extra reach in a native lens.

[sedwards]

wow tthanks for all the posts guys ! my original plan was to get a 100-400L but i read on quite a few sites that the image quality wasnt very good. i found that weird because i thought all L lenses where top of the line. a 400 prime would be nice but im pretty sure it will be to long sometimes. a zoom would be a definite advantage. i have seen a lot more used 100-400 lenses than primes too. easier on the wallet lol

[conropl]

A bare 100-400L is a great lens. It is versatile, and has IS. It is not going to be great in low light, but you are going to pay much much much more for that privilege. I was faced with the same choice as you a few years back, and I chose the 100-400L over the 400mm. I have not regretted it. The IQ is great if used correctly. Here are a few examples with a 7D (same sensor as yours)... if you want to see a larger size, then click on the picture or title and you can see larger sizes in flickr:


Green Heron-7893 by westmichigan, on Flickr


Duckling-3911 by westmichigan, on Flickr


Twin Fawns -1000 by westmichigan, on Flickr


Deer Along the River-9866 by westmichigan, on Flickr

[clemmb]

A bare 100-400L is a great lens. It is versatile, and has IS. It is not going to be great in low light,

That was my thinking for the price. f5.6 is a bit limiting in low light but the price is right.
Canon EF 400mm f/5.6 L USM with no IS, Canon EF 300mm f/4 L IS USM+ 1.4x = 420 with IS or
the Canon EF 100-400mm f/4.5-5.6 L IS USM.
With the zoom you get 400 with IS and no TC for the best IQ @400 IMO

[sedwards]

Thanks again for all the replies guys. Im pretty happy that i posted this and you guys showed pics of what the 100-400 can do on a crop sensor. Like i said my first plan was to get the zoom lens but when i read a few reviews they were all saying the prime was way better. A zoom will be much more versatile for me so thats the way im gonna go. Thanks to all that answered you have helped a lot !
Happy New Year every one.

[neuroanatomist]

Yes, the 100-400L is known to produce soft images, especially on APS-C. Just look for yourself...