Product Description

Tamron 2X Teleconverter for Canon EOS mount cameras

Product Details

• Color: Black
• Brand: Tamron
• Model: AF20C-700
• Dimensions: 1.00" h x 3.00" w x 3.00" l, .50 pounds

Features

• Multiplies focal length 2 times for more telephoto
• Recommended for lenses 50mm or wider
• Effective aperture decreases by 2 stops and may effect AF operation.
• Comes with pouch
• 1 year warranty

Customer Reviews

Works great
I wanted a larger lens and not the price.
On my 70 to 300mm cannon lens it works ok.
At higher lens values it has a hard time auto focusing but just switching to manual solved that. I shot mostly race cars, durning the day so the loss of 2 f-stops is not a problem. Have not tried it inn teh early or late hours with lower light. Pictures are sharp and clear.

Fun accessory
I purchased this for astrophotography purposes, I'm using it with a Canon Rebel XSi (EOS 450D).

As the description says, using this costs you 2 stops. Autofocus has been hit and miss for me; my 50mm prime searches a bit, but usually focuses fine. My Tamron 70-300mm Di LD lens won't autofocus at all.

Quality-wise, I get noticable purple fringing in some images, but nothing that's uncorrectable.

I'm definitely recommend this to anybody searching for a cheap teleconverter - If you want quality though, get the Canon version.

Tamron 2x teleconverter
Works great. The only problem is the f-stop is a little off, but with a little practice you'll have it working perfect in no time.