2x converter at DVinfo.net
DV Info Net

Go Back   DV Info Net > Canon EOS / MXF / AVCHD / HDV / DV Camera Systems > Canon EOS Crop Sensor for HD

Canon EOS Crop Sensor for HD
APS-C sensor cameras including the 80D, 70D, 7D Mk. II, 7D, EOS M and Rebel models for HD video recording.

Thread Tools Search this Thread
Old June 22nd, 2011, 04:28 AM   #1
Regular Crew
Join Date: Jan 2011
Location: Wylam
Posts: 42
2x converter

I will be traveling in the summer and have bought a Sigma 18-250 which I use on my 7D, I know its far from the best lens but it suits my needs well. Traveling light is a priority and the 18-250 gives me a good compromise between traveling light and image quality v affordability.

Im thinking about a 2x converter as I may need to film video from a distance. I have looked at this one.

Sigma DG tele-converters: Digital Photography Review

At 500mm will my IS and AF still work and do you guys think it will provide decent results?

Many thanks
Alan Maughan is offline   Reply With Quote
Old June 22nd, 2011, 04:10 PM   #2
Major Player
Join Date: Mar 2009
Location: Ottawa, ON
Posts: 385
Re: 2x converter

With that setup and a 2x converter, AF and IS won't work, the image will be very soft, low in contrast and chromatic aberrations may be quite bad.

A T3i would be a much better solution with it's 3x video crop mode. That's why I picked one up along with my 7D.
Kin Lau is offline   Reply With Quote
Old June 28th, 2011, 11:13 PM   #3
Join Date: Apr 2006
Location: United States
Posts: 1,158
Re: 2x converter

Kenko is what you want - its the factory version of the Tamron and maybe one or two others. my review of the 1.4X is here Kenko 1.4X Teleconverter Review . if the lens is a 4.5, then at about F8 1/2 ( 9.5) thats well past what the AF system will do.

if you want a LONG lens, try a Vivitar ( made by tokina ) 400mm 5.6 : review here Vivitar 400mm 5.6 Lens Review & Video : UPDATED which you can pick up on ebay for around $100 or so. it is heavy, but its a nice piece of glass, especially for the price. while you won't get AF, you may get AF confirm with a programmable adapter.
Steve Oakley DP Audio Mixer Editor Colorist
Steve Oakley is offline   Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

B&H Photo Video
(866) 521-7381
New York, NY USA

Scan Computers Int. Ltd.
+44 0871-472-4747
Bolton, Lancashire UK

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > Canon EOS / MXF / AVCHD / HDV / DV Camera Systems > Canon EOS Crop Sensor for HD

Thread Tools Search this Thread
Search this Thread:

Advanced Search


All times are GMT -6. The time now is 08:32 AM.

DV Info Net -- Real Names, Real People, Real Info!
1998-2020 The Digital Video Information Network