<p>Hi everyone<br>
I'd like a longer lens for birding and wildlife photography. I am currently using a 300mm f/4 lens on an EOS 100D body, sometimes with a 1.4x extender; I could spend up to £2,000 to get more reach. Options I am thinking about are:</p>
<ol>
<li>400mm f/5.6. Pros: cheap, light. Cons: I can't use the extender and keep autofocus unless I buy a new body as well; and no image stabilisation.</li>
<li>400mm f/4 series I. Pros: fast, can use extender with autofocus, image stabilisation. Cons: expensive, heavy.</li>
<li>100 - 400mm series I. Pros: zoom, image stabilisation. Cons: heavy.</li>
<li>100 - 400mm series II. Pros: zoom, good image stabilisation. Cons: expensive, heavy.</li>
<li>Lens options 1 or 3 with a new EOS 80D body. Pros: this will let me use the extender with autofocus. Cons: expense, heavy.</li>
<li>Accept I can't get a great solution at my price point, and stick with my current set-up.</li>
</ol>
<p>Any thoughts?<br>
Thanks<br>
Andrew</p>