July 22, 2014, 01:52:03 PM

Author Topic: Canon EF-S 55-250 f/4-5.6 IS STM Announced  (Read 16634 times)

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Canon EF-S 55-250 f/4-5.6 IS STM Announced
« on: August 22, 2013, 12:06:12 AM »

The Canon EF-S 55-250mm f/4-5.6 IS STM Telephoto Zoom Lens is a long-reaching zoom lens that provides a 35mm-equivalent focal length range of 88-400mm, covering portrait-length to telephoto perspectives to suit working with distant subject matter. Greatly benefitting this lens’ reach is the incorporation of image stabilization, which works to minimize the appearance of camera shake by up to 3.5 shutter speed steps to support handheld use in low-light conditions.


An STM stepping focus motor is also integrated into the lens’ design to provide smooth, quiet, and fast focusing performance that is ideally-suited to video applications as well as tracking moving subjects. The rear focusing system, high-speed CPU, and an enhanced AF algorithm also contribute to quickened overall AF speeds. Full-time manual focus is also supported to permit fine-tuning of focus even while working in AF modes. Additionally, the front lens section does not rotate during focusing to better facilitate the use of polarizing filters.


The optical construction of the lens employs one ultra-low dispersion glass element to help reduce chromatic aberrations and distortion throughout the zoom range while also enhancing contrast and clarity. Optimized lens coatings have also been applied to ensure color fidelity by countering the effects of lens flare and ghosting.



    Long-reaching zoom lens provides a 35mm-equivalent focal length of 88-400mm, covering portrait-length to telephoto perspectives.

    Optical image stabilization helps to minimize the appearance of camera shake by up to 3.5 shutter speed steps to benefit shooting handheld in dim lighting and with greater zoom magnifications.

    The STM stepping focus motor produces near-silent, smooth, and quick autofocus performance that is well-suited to video applications.

    One ultra-low dispersion element helps to reduce chromatic aberrations and distortion while also contributing to greater image sharpness, contrast, and clarity.

    Enhanced lens coatings minimize flare and ghosting in order to produce true colors with maintained contrast.

    A minimum focusing distance of 2.8′ throughout the zoom range and a maximum magnification of 0.29x at the telephoto end enables working with close-up subject matter.

    A seven-blade circular aperture helps to produce an aesthetic out-of-focus quality to benefit selective focus and shallow depth of field imagery.


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Canon EF-S 55-250 f/4-5.6 IS STM Announced
« on: August 22, 2013, 12:06:12 AM »

IceAgeDX

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Re: Canon EF-S 55-250 f/4-5.6 IS STM Announced
« Reply #1 on: August 22, 2013, 12:16:47 AM »
So excited about this!
The previous version is great, and all the other STM lenses have been getting stellar sharpness reviews.

pj1974

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Re: Canon EF-S 55-250 f/4-5.6 IS STM Announced
« Reply #2 on: August 22, 2013, 12:39:50 AM »
So excited about this!
The previous version is great, and all the other STM lenses have been getting stellar sharpness reviews.

+1

My thoughts exactly (and I wrote the same a few minutes ago on the 'pre-order' thread about this lens and the new PowerShots.
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Re: Canon EF-S 55-250 f/4-5.6 IS STM Announced
« Reply #3 on: August 22, 2013, 12:52:00 AM »
+1

Full time manual focus and rear focusing are great upgrades to this lens.

mrsfotografie

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Re: Canon EF-S 55-250 f/4-5.6 IS STM Announced
« Reply #4 on: August 22, 2013, 01:14:33 AM »
+1

Full time manual focus and rear focusing are great upgrades to this lens.

It's a promising piece of glass, now seriously starting to threaten the 70-300 IS for crop owners.

Rear focusing means it must be a different optical design than the current 55-250.
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IceAgeDX

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Re: Canon EF-S 55-250 f/4-5.6 IS STM Announced
« Reply #5 on: August 22, 2013, 01:22:39 AM »
+1

Full time manual focus and rear focusing are great upgrades to this lens.

It's a promising piece of glass, now seriously starting to threaten the 70-300 IS for crop owners.

Rear focusing means it must be a different optical design than the current 55-250.

Lens what is rear focusing?

LetTheRightLensIn

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Re: Canon EF-S 55-250 f/4-5.6 IS STM Announced
« Reply #6 on: August 22, 2013, 03:44:00 AM »
+1

Full time manual focus and rear focusing are great upgrades to this lens.

It's a promising piece of glass, now seriously starting to threaten the 70-300 IS for crop owners.

Rear focusing means it must be a different optical design than the current 55-250.

Perhaps it is another mini 'EF-S L' like the 17-55.
Sounds promising for the APS-C folks!

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Re: Canon EF-S 55-250 f/4-5.6 IS STM Announced
« Reply #6 on: August 22, 2013, 03:44:00 AM »

Zv

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Re: Canon EF-S 55-250 f/4-5.6 IS STM Announced
« Reply #7 on: August 22, 2013, 05:51:24 AM »
Looks like a decent lens. Even from the picture you can tell the build quality is gonna be way better.
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neuroanatomist

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Re: Canon EF-S 55-250 f/4-5.6 IS STM Announced
« Reply #8 on: August 22, 2013, 09:05:34 AM »
It's a promising piece of glass, now seriously starting to threaten the 70-300 IS for crop owners.

I'd say the previous (non-STM) versions of the 55-250 were already a better choice for crop users than the 70-300 non-L.  This lens is significantly better, with FTM and a non-rotating front element.
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Re: Canon EF-S 55-250 f/4-5.6 IS STM Announced
« Reply #9 on: August 22, 2013, 09:15:29 AM »
How does STM compare with USM? (Not in technical details, but in how it performs)

2n10

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Re: Canon EF-S 55-250 f/4-5.6 IS STM Announced
« Reply #10 on: August 22, 2013, 10:00:51 AM »
It's a promising piece of glass, now seriously starting to threaten the 70-300 IS for crop owners.

I'd say the previous (non-STM) versions of the 55-250 were already a better choice for crop users than the 70-300 non-L.  This lens is significantly better, with FTM and a non-rotating front element.

Having had both the 55-250 and 70-300 non L the only difference I have noticed is the 70-300 seems to focus a little faster, a slightly better build and the greater focal length.  IQ seems to be pretty close.  I do agree with your assessment that the STM model is a a better choice.
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neuroanatomist

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Re: Canon EF-S 55-250 f/4-5.6 IS STM Announced
« Reply #11 on: August 22, 2013, 10:21:25 AM »
How does STM compare with USM? (Not in technical details, but in how it performs)

STM is slower, in general (but not quite as slow as the USM in the 85L II!). 
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tgara

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Re: Canon EF-S 55-250 f/4-5.6 IS STM Announced
« Reply #12 on: August 22, 2013, 10:23:11 AM »
How does STM compare with USM? (Not in technical details, but in how it performs)

As a practical matter, STM makes for faster and quieter autofocusing.  But that is only one aspect of this new lens as compared to its predecessor.  The internal/rear focusing, nonrotating front element, upgraded CPU and electronics, and full manual focus are nice improvements IMHO.  The closest focus distance is nearly a foot less than the previous version (2.8 ft vs 3.6 ft).  Plus the filter size is the same as the previous version (58mm), so I don't need to buy new filters.  And despite all these improvements, the new version weighs 15 grams less than its predecessor (375g vs. 390g).   The images it produces will tell the whole story, but on the surface, it looks like this lens was improved in every way that really matters.

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Re: Canon EF-S 55-250 f/4-5.6 IS STM Announced
« Reply #12 on: August 22, 2013, 10:23:11 AM »

neuroanatomist

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Re: Canon EF-S 55-250 f/4-5.6 IS STM Announced
« Reply #13 on: August 22, 2013, 10:27:58 AM »
How does STM compare with USM? (Not in technical details, but in how it performs)
As a practical matter, STM makes for faster and quieter autofocusing. 

Faster than USM?  With a couple of exceptions (like the 85L), USM is much faster than STM. 
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Re: Canon EF-S 55-250 f/4-5.6 IS STM Announced
« Reply #14 on: August 22, 2013, 10:42:32 AM »
And despite all these improvements, the new version weighs 15 grams less than its predecessor (375g vs. 390g).
This is the part that kind of surprises me. The main knock on the old 55-250 was the "cheap, plasticky" build quality. It's weird to think that they improved the housing while also making it lighter.

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Re: Canon EF-S 55-250 f/4-5.6 IS STM Announced
« Reply #14 on: August 22, 2013, 10:42:32 AM »