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Use of extenders? Canon

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GVLCN
Posts: 747
Joined: Sat Sep 29, 2012 5:15 pm
Location: cardiff

Use of extenders? Canon

Post by GVLCN » Sat Apr 07, 2018 7:50 pm

Hi all,

Does anyone in the group use extenders to increase the magnification of their lens? I’ve recently bought a mk1 500mm prime L & was looking at adding a extender for the airshows, can anyone please share their use and experience.
I will be using it on a full frame canon 6d Mark II body.

Cheers Andy

Gundylunch
Posts: 209
Joined: Fri Oct 29, 2010 8:53 pm

Re: Use of extenders? Canon

Post by Gundylunch » Sat Apr 07, 2018 8:47 pm

I've always found the 1.4 Extender exceptionally useful

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Heal1979
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Re: Use of extenders? Canon

Post by Heal1979 » Sat Apr 07, 2018 8:51 pm

Hi Andy,

I've been using the Canon 500mm f/4 IS lens with a x1.4ex iii for a few years. Adding the extender essentially makes it a f/5.6 lens, but still fast and allows centre point focussing.

For me it works perfectly with no noticeable deterioration in the image (not that I can detect anyway). I would not attach a x2.0 extender as I think this does have a negative effect on the image. I have been shooting with a 5Diii and now 5DIV.

Cheers,
Chris

https://www.flickr.com/photos/chris-heal/

GVLCN
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Joined: Sat Sep 29, 2012 5:15 pm
Location: cardiff

Re: Use of extenders? Canon

Post by GVLCN » Sat Apr 07, 2018 9:02 pm

Thanks guys that’s the answer I was looking for, a lot of people saying I should of kept my 7d mk 2. I just love the images from a full frame camera, and was hoping a 1.4x canon extender with a 500mm will be better than going back to a crop sensor.

Cheers Andy.

John flightpath
Posts: 405
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Location: Birmingham

Re: Use of extenders? Canon

Post by John flightpath » Tue May 15, 2018 10:19 pm

Just as a possible matter of interest, I recently used a teleplus/kenko 2 x converter on a Tamron 70-300 zoom lens and couldn't detect the difference on the shots. They were mounted on my Canon 750d.

Cheers
John 'flightpath'.
Equipment
Canon EOS 750D
Nikon L810 Bridge/Compact.
Sigma APO OS DG 150-500mm
Canon 55-250 IS STM Lens
Sigma APO DG 70-300mm
Canon 18-55 IS STM lens

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Funtera
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Joined: Fri Mar 02, 2018 3:02 pm
Location: Birmingham/Mach Loop

Re: Use of extenders? Canon

Post by Funtera » Wed May 16, 2018 1:21 pm

I've been thinking about an Extender for mine ..
50D with 70-300mm IS USM (can't afford a bigger lens).. Yeah it's already a Crop-Body but if I got the 1.4x .. would the AF still function?
Fox2 Refugee & HATO
EOS50D + 70-300mm IS USM .. +Luck = My Pics

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Thunder
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Joined: Sat Jan 02, 2010 10:24 pm

Re: Use of extenders? Canon

Post by Thunder » Wed May 16, 2018 3:40 pm

If you’re asking about the Canon 1.4x specifically then I don’t think it will work at all. These extenders are designed for the L series of lenses, you’ll certainly lose AF at best.

Even if it did work the IQ would be pretty poor with you more or less turning the the lens into a 420mm f8, probably having to stop down to f11 and with no IS this would result in a bright light use only. The orginial lens is pretty soft above 200mm as it is, I think you would achieve the same results just by cropping the image at processing.

Don’t know what others think, but I would save the money towards a Sigma 150-500.

John flightpath
Posts: 405
Joined: Mon Jul 13, 2015 9:48 pm
Location: Birmingham

Re: Use of extenders? Canon

Post by John flightpath » Wed May 16, 2018 5:53 pm

Hi Funtera, If you use the Kenko or teleplus converters I think you're ok. Check with your local dealer.They work with AF on my Tamron lens, however will not wok on Canon IS STM Lenses. To work on the latter you need the Kenko HD Converter which are a bit more expensive. Another tip, for the amount of time you use them, buy a used one as they spend a lot of time doing nothing in the bag. Also as Thunder suggested, have a look at the Sigma 150-500 lens. They work on cropped and full frame sensors.

Hope that helps a bit.
Chers
John 'flightpath'.
Equipment
Canon EOS 750D
Nikon L810 Bridge/Compact.
Sigma APO OS DG 150-500mm
Canon 55-250 IS STM Lens
Sigma APO DG 70-300mm
Canon 18-55 IS STM lens

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XWP29
Posts: 694
Joined: Mon Oct 26, 2015 8:52 pm

Re: Use of extenders? Canon

Post by XWP29 » Wed May 16, 2018 8:06 pm

GVLCN wrote:
Sat Apr 07, 2018 7:50 pm
Hi all,

Does anyone in the group use extenders to increase the magnification of their lens? I’ve recently bought a mk1 500mm prime L & was looking at adding a extender for the airshows, can anyone please share their use and experience.
I will be using it on a full frame canon 6d Mark II body.

Cheers Andy
I use them a lot, they are particularly effective in good light. If you look at the Reapers top side shots in current military some were taken with a 300mm with 2x converter on FF and others on a crop with a 100-400mm with 1.4. You lose some focusing points but good light improves the depth of field.
GRIM REAPERS SUPPORTER

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Funtera
Posts: 60
Joined: Fri Mar 02, 2018 3:02 pm
Location: Birmingham/Mach Loop

Re: Use of extenders? Canon

Post by Funtera » Tue May 29, 2018 1:43 pm

Cheers Thunder & Flightpath
Fox2 Refugee & HATO
EOS50D + 70-300mm IS USM .. +Luck = My Pics

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