Here are Some Interesting Lens Mentions We've Received [CR1]

Don Haines

Beware of cats with laser eyes!
Jun 4, 2012
8,246
1,939
Canada
unfocused said:
I'm tired of waiting for Canon. I'm going into partnership with Harry and we are going to do this ourselves.

It will be a SUPER TELEPHOTO LENS THAT EVERYONE HAS BEEN ASKING FOR. 16-800 mm f2.8 with two tele-extenders, a 1.5x and a 2.3x. AND THERE WILL BE NO LOSS OF LIGHT so you can use the f2.8 aperture with either extenders. It will BE USABLE ON ALL CANON CAMERAS, INCLUDING THE M SERIES AND ANY NEW MIRRORLESS FULL FRAME MODELS AS WELL.

By using special LIGHT-FIELD OPTICAL DISPERSION TECHNOLOGY the lens will weigh less than 2 lbs and be no more than seven inches long.Thanks to the light-field technology THERE WILL BE NO NEED FOR FOCUSING BECAUSE ALL FOCUSING CAN BE DONE IN POST PRODUCTION. NO MORE OUT OF FOCUS PICTURES!!!!

I am an ABSOLUTE EXPERT IN LIGHT AND PHYSICS so believe me I CAN DO THIS. However, I will be designing it using public domain software ON MY SPECIAL HAL 9505 (The newest version of the HAL Series) so that CANON CANNOT GO TO COURT TO STOP ME. I have years of experience with LAWSUITS AND HAVE WON EVERY ONE OF THEM, SO I HOPE CANON TRIES TO SUE ME.

Stay tuned for Progress Reports.
Sounds like you are on the hairy (Harry?) edge of new technology! Are you going to make a filter for the end of the lens that can be put on all other lenses, and will turn them into F1.4 lenses with MTF curves greater than 100% ?

P.S. Your caps lock is sticking....
 
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Don Haines

Beware of cats with laser eyes!
Jun 4, 2012
8,246
1,939
Canada
hkenneth said:
Michael Clark said:
hkenneth said:
Michael Clark said:
Chaitanya said:
Any mention of Super tele zoom to compete with 150-600mm or 200-500mm lenses currently present on market?

It's the EF 100-400mm f/4.5-5.6 L IS II.

Used properly you can crop the snot out of it and still get better IQ than the Sigma C/Sigma S/Tamron 150-600mm offerings.

I don't have the 100-400 II but my Tamron 150-600 G2 at 500mm f8 is sharper than 100-400 I. Could be sample variation though.

Tanrom G2 at 400mm https://www.flickr.com/photos/143732728@N06/39808737550/in/datetaken/
Tanrom G2 at 500mm+ https://www.flickr.com/photos/143732728@N06/41591501121/in/datetaken/

The EF 100-400mm f/4.5-5.6 L IS II is considerably sharper at 400mm than the EF 100-400mm f/4.5-5.6 L IS everywhere except in the exact center of the frame (where they are equal). Wide open or stopped down to f/8.

It's also a bit better than the Tamron 150-600 G2 at 400mm. Wide open or stopped down to f/8.

But the Tamorn drops way off by 600mm, especially in the center of the frame. Whether wide open or stopped down to f/8.

https://www.dxomark.com/Lenses/Compare/Side-by-side/Canon-EF-100-400mm-F45-56L-IS-USM-on-Canon-EOS-5DS-R-versus-Canon-EF-100-400mm-F45-56L-IS-II-USM-on-Canon-EOS-5DS-R-versus-Tamron-SP-150-600mm-F5-63-Di-VC-USD-G2-Model-A022-Canon__598_1009_1469_1009_1751_0

Yes, the Tamron sharpness drops at 600mm. If you just treat it as a 150-550mm lens you would be happier. But I can understand the motivation for Tamron to push it to 600mm as it sure sounds better in terms of marketing goes.
I was surprised that they didn't make at a 200-600.... it it was 3X zoom instead of 4X zoom, they could have made it a bit sharper with the same materials.....
 
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Don Haines said:
hkenneth said:
Michael Clark said:
hkenneth said:
Michael Clark said:
Chaitanya said:
Any mention of Super tele zoom to compete with 150-600mm or 200-500mm lenses currently present on market?

It's the EF 100-400mm f/4.5-5.6 L IS II.

Used properly you can crop the snot out of it and still get better IQ than the Sigma C/Sigma S/Tamron 150-600mm offerings.

I don't have the 100-400 II but my Tamron 150-600 G2 at 500mm f8 is sharper than 100-400 I. Could be sample variation though.

Tanrom G2 at 400mm https://www.flickr.com/photos/143732728@N06/39808737550/in/datetaken/
Tanrom G2 at 500mm+ https://www.flickr.com/photos/143732728@N06/41591501121/in/datetaken/

The EF 100-400mm f/4.5-5.6 L IS II is considerably sharper at 400mm than the EF 100-400mm f/4.5-5.6 L IS everywhere except in the exact center of the frame (where they are equal). Wide open or stopped down to f/8.

It's also a bit better than the Tamron 150-600 G2 at 400mm. Wide open or stopped down to f/8.

But the Tamorn drops way off by 600mm, especially in the center of the frame. Whether wide open or stopped down to f/8.

https://www.dxomark.com/Lenses/Compare/Side-by-side/Canon-EF-100-400mm-F45-56L-IS-USM-on-Canon-EOS-5DS-R-versus-Canon-EF-100-400mm-F45-56L-IS-II-USM-on-Canon-EOS-5DS-R-versus-Tamron-SP-150-600mm-F5-63-Di-VC-USD-G2-Model-A022-Canon__598_1009_1469_1009_1751_0

Yes, the Tamron sharpness drops at 600mm. If you just treat it as a 150-550mm lens you would be happier. But I can understand the motivation for Tamron to push it to 600mm as it sure sounds better in terms of marketing goes.
I was surprised that they didn't make at a 200-600.... it it was 3X zoom instead of 4X zoom, they could have made it a bit sharper with the same materials.....

I don't know. I agree with you. Very few people would buy this lens because it covers 150-200mm. I do appreciate Tamron for making this lens though. Not long ago, such a lens was unimaginable.
 
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The idea of adding the hardware for extension to the f 2.8 or 4 superteles seems contrary to the physical reality of actually using the lenses from a weight perspective.

Personally I can control handheld a EF ii 500 mm with a 1.4 extender, the unextended 400 ii f2.8 and the 600 ii f4 are fatiguing and have a bit too much inertia for big, IMHE. I’ve not used the 200-400 f4, but it is spec ed on the heavy side.

Earlier in the thread some one mentioned the concept of drop in extenders, or perhaps an extender module, now that sounds interesting with the caveat that space for extenders are going to throw the weight forward, where it doesn’t manage well.
 
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tron

CR Pro
Nov 8, 2011
5,223
1,616
hkenneth said:
tron said:
hkenneth said:
Michael Clark said:
hkenneth said:
Michael Clark said:
Chaitanya said:
Any mention of Super tele zoom to compete with 150-600mm or 200-500mm lenses currently present on market?

It's the EF 100-400mm f/4.5-5.6 L IS II.

Used properly you can crop the snot out of it and still get better IQ than the Sigma C/Sigma S/Tamron 150-600mm offerings.

I don't have the 100-400 II but my Tamron 150-600 G2 at 500mm f8 is sharper than 100-400 I. Could be sample variation though.

Tanrom G2 at 400mm https://www.flickr.com/photos/143732728@N06/39808737550/in/datetaken/
Tanrom G2 at 500mm+ https://www.flickr.com/photos/143732728@N06/41591501121/in/datetaken/

The EF 100-400mm f/4.5-5.6 L IS II is considerably sharper at 400mm than the EF 100-400mm f/4.5-5.6 L IS everywhere except in the exact center of the frame (where they are equal). Wide open or stopped down to f/8.

It's also a bit better than the Tamron 150-600 G2 at 400mm. Wide open or stopped down to f/8.

But the Tamorn drops way off by 600mm, especially in the center of the frame. Whether wide open or stopped down to f/8.

https://www.dxomark.com/Lenses/Compare/Side-by-side/Canon-EF-100-400mm-F45-56L-IS-USM-on-Canon-EOS-5DS-R-versus-Canon-EF-100-400mm-F45-56L-IS-II-USM-on-Canon-EOS-5DS-R-versus-Tamron-SP-150-600mm-F5-63-Di-VC-USD-G2-Model-A022-Canon__598_1009_1469_1009_1751_0

Given the right condition, Tamron G2 can also be sharp at 600mm: https://www.flickr.com/photos/143732728@N06/41728206442/in/datetaken/
Using a 20MP Full frame at F/16 is rather extreme way to make the Tamron look sharp! But yes that is a nice and sharp picture.

You don't have to go f16 to get a sharp image at 600mm. I must have accidentally touched the aperture wheel. Here is an f8 image at 600mm, handhold at 1/200s believe it or not: https://www.flickr.com/photos/143732728@N06/40959158475/in/datetaken/
Very nice picture! But it is easier for Tamron to have nice IQ when you use a low mpixel FF camera. I wish you had examples of Tamron with a crop camera too...
 
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