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IQ Comparison Of The New Canon Teleconverters  
User currently offlineSNATH From United States of America, joined Mar 2004, 3238 posts, RR: 22
Posted (3 years 7 months 3 weeks 4 days 14 hours ago) and read 5302 times:

Hi guys,

I think this might be of interest. Bryan posted an IQ comparison between the old/new Canon teleconverters. The test lens is the 200mm f2 L IS which is apparently very sharp:

http://www.the-digital-picture.com/N...Extender-1.4x-2x-III-Image-Quality

1.4x III vs. 1.4x II

http://www.the-digital-picture.com/R...3&SampleComp=0&FLIComp=1&APIComp=0

2x III vs. 2x II

http://www.the-digital-picture.com/R...3&SampleComp=0&FLIComp=2&APIComp=3

As Bryan pointed out, the new 1.4x is similar to the old one but with less barrel distortion. The new 2x though looks much better.

Tony


Nikon: we don't want more pixels, we want better pixels.
4 replies: All unread, jump to last
 
User currently offlineJakTrax From United Kingdom, joined Jun 2005, 4936 posts, RR: 7
Reply 1, posted (3 years 7 months 3 weeks 4 days 11 hours ago) and read 5266 times:

I was eager to view such a comparison. In the 1.4x comparison, the II actually looks better mid-frame than the III, although generally the III seems to have the edge.

The 2x comparison is much more clear cut. Looks like they really went to town with the III, as it's visibly far better.

Not enough in the 1.4x to justify the cost in my opinion, but the 2x III is impressive to say the least!

Thanks Tony.

Karl


User currently offlineSNATH From United States of America, joined Mar 2004, 3238 posts, RR: 22
Reply 2, posted (3 years 7 months 3 weeks 4 days 2 hours ago) and read 5221 times:

Karl,

Quoting JakTrax (Reply 1):
the II actually looks better mid-frame than the III,

This is what I was seeing too!

Quoting JakTrax (Reply 1):
although generally the III seems to have the edge.

I agree.

Quoting JakTrax (Reply 1):
The 2x comparison is much more clear cut. Looks like they really went to town with the III, as it's visibly far better.

Yeah, the new 2x looks awesome. It actually opens up many new possibilities, like maybe getting decent results when mounting it on a f/2.8 zoom / prime.

Tony



Nikon: we don't want more pixels, we want better pixels.
User currently offlineckw From UK - England, joined Aug 2010, 731 posts, RR: 16
Reply 3, posted (3 years 7 months 3 weeks 3 days 19 hours ago) and read 5191 times:

That does appear to be a significant improvement. However, test conditions are quite different to real world - I wonder how much of this difference will be visible after the effects of atmospheric distortion, dust etc. are factored in?

Using the 2x mk2 with my 500 I suspect more shots are lost due to environmental conditions than lack of quality in the convertor itself. Still, if I could get a decent trade-in on my Mk 2, I think I'd be willing to give it a try. As for the 1.4 - well I don't think there was a lot of scope for improvement in the optical department anyway.

Interestingly, the 200 + 2xmk3 compared to the 100-400 appears to be much better in the corners, though the 100-400 still has the edge in the center. I would love to see the latest 70-200 f4 IS (which is very sharp) with the convertor compared to the 100-400. I could happily live with the f8 aperture if it came close in quality, and just give up on Canon replacing the 100-400.

Cheers.

Colin



Colin K. Work, Pixstel
User currently offlineJohnKrist From Sweden, joined Jan 2005, 1399 posts, RR: 6
Reply 4, posted (3 years 7 months 3 weeks 20 hours ago) and read 5086 times:
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Great comparison, and that was what I was hoping for in the 2x III, it's far cheaper than buying a 100-400 in my case, and lighter in my bag for sure. At least it looks like it's getting closer to the 100-400 IQ. Now I would like see it in use on a 70-200 2.8 IS too  


5D Mark III, 7D, 17-40 F4 L, 70-200 F2.8 L IS, EF 1.4x II, EF 2x III, Metz 58-AF1
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