Pleasantly surprised. 100-400L with Tamron 1.4

[Wulff]

Just got the TC this afternoon. I plan on using it selectvely, namely offshore birds on bright days.

Surprise 1 was AF. While sluggish, it was better than I was expecting

Surprise2.
Because it was mid evening most of the shots I had time for (just quickies from my backyard) were at 800 and 1600 ISO. Im not sure what to make of them. Certainly not as good as the bare lens but overall pretty decent. What do you think?


Could use an ID on this to:)


Very happy with this shot



Blew the exposure but still indicative


Whats not to like?


Finally, what would have been little more than a smudge without the TC


100% crop



Thoughts?
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HOFMEISTER KINK

[surfinbird]

HI There
I will be getting a 1.4 and I'm looking at the Canon model . What made you choose a Tamron ?
surfinbird

[Wulff]

It's the only TC that maintains AF without having to tape the pins.
Canon, Kenko and Tamron "Pro" TCs all report to the body, which on an XT won't AF if the max aperature is 5.6 or less.  I tried the "tape" on a Canon 1.4 and while it did AF, it was extremely sluggish. It took about 2 to 3 seconds to focus on a stop sign on a bright day.

By comparison, the Tamron I picked up still focuses on most targets in under a second. Theres been a few occasions where it really struggles, but so far 90% of the time AF is still pretty good.
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Oregon dispensary

[surfinbird]

I plan on using the 1.4 on a f4 300mmL is prime so I am hoping that I should be ok with the Canon.

[Tommy]

Rob,
You don’t need the Non-Pro Tamron 1.4X TC.
Your EF 300mm f/4L will work better with the Canon EF 1.4X II TC. The Non-Pro Tamron 1.4X TC is only used with the EF 400mm f/5.6L or the EF 100-400mm f/4.5-5.6L so AF (Auto focus) is maintained.
How is the EF 300mmL working for you?
Here is a photo of a Chestnut-sided Warbler taken this spring with the EF 300mmL + EF 1.4X II combination

[surfinbird]

Great picture Tommy my 300mm is a great lens, but I want a little more reach and when I get some photos that are worthy I will post them in the gallery.
surfinbird