April 19, 2014, 03:45:10 AM

Author Topic: Canon Patent For 70-400 f/4.5-5.6 Lens  (Read 731 times)

Lichtgestalt

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Canon Patent For 70-400 f/4.5-5.6 Lens
« on: February 04, 2014, 05:14:57 AM »

candyman

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Re: Canon Patent For 70-400 f/4.5-5.6 Lens
« Reply #1 on: February 04, 2014, 06:00:47 AM »
http://www.canonwatch.com/canon-patent-70-400-f4-5-5-6-lens/


With the same IQ as the 70-300L and IS, I would buy it, even if it is bigger and has more weight than the 70-300L
Love to have this zoom reach on FF (hope it is EF)
« Last Edit: February 04, 2014, 06:33:41 AM by candyman »
5DIII  |  6D  |  16-35LII  |  24-70VC  |  24-105L  |  70-200 f/2.8L IS II  |  70-300L  |  135L  |  1.4exIII  |  GPS-E2

Eldar

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Re: Canon Patent For 70-400 f/4.5-5.6 Lens
« Reply #2 on: February 04, 2014, 06:29:46 AM »
http://www.canonwatch.com/canon-patent-70-400-f4-5-5-6-lens/


With the same IQ as the 70-300L and IS, I would by it, even if it is bigger and has more weight than the 70-300L
Love to have this zoom reach on FF (hope it is EF)

If they make it EF-S it would be a very strong statement for future crop sensor support! I doubt it though.
5DIII, 1DX, 8-15/4L, 24-70/2.8L II, 70-200/2.8L II, 70-300/4-5.6L, 200-400/4L 1.4x, Zeiss 15/2.8, 17/4L TS-E, 24/3.5L TS-E II, Sigma 35/1.4, Zeiss Otus 55/1.4, 85/1.2L II, 135/2L, 600/4L II

photonius

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Re: Canon Patent For 70-400 f/4.5-5.6 Lens
« Reply #3 on: February 04, 2014, 06:56:40 AM »
http://www.canonwatch.com/canon-patent-70-400-f4-5-5-6-lens/


With the same IQ as the 70-300L and IS, I would by it, even if it is bigger and has more weight than the 70-300L
Love to have this zoom reach on FF (hope it is EF)

If they make it EF-S it would be a very strong statement for future crop sensor support! I doubt it though.


The problem is that there would be virtually no benefit for making it EF-S, it wouldn't be shorter (length dictated by focal length), it wouldn't have a smaller diameter (dictated by the light gathering capacity/lens diameter at the front). You could save a little in diameter maybe with the rear elements, so overall you may save a few percent in weight by going EF-S. Is it worth it?

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Re: Canon Patent For 70-400 f/4.5-5.6 Lens
« Reply #3 on: February 04, 2014, 06:56:40 AM »