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Sony SAL-135F28 135mm f/2.8 (T4.5) STF Telephoto Lens for Sony Alpha Digital SLR Camera
|Price:||$1,398.00 & FREE Shipping|
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- Smooth transmission focus system for pleasing effect
- Apodization lens element smooths out-of-focus areas
- Subjects stand out vividly against smooth, even backgrounds
- Manual aperture ring adjusts from T 4.5 to T 6.7, manual focusing with comfortable wide focus ring
- Circular aperture gives spot light sources a circular shape
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|Aperture Control Design||Includes aperture ring|
|Compatible Lens Hood Part Number||circular hood|
|Compatible Mountings||Sony/Minolta Alpha|
|Item Dimensions||3.15 x 3.15 x 3.9 inches|
|Item Display Weight||500 grams|
|Item Weight||1.61 pounds|
|Lens Type||Prime lens|
|Macro Focus Range||0.87 m|
|Maximum Aperture Range||F2.8|
|Maximum Focal Length||135 mm|
|Maximum Format Size||35mm full frame|
|Minimum Focal Length||135 mm|
|Number of Diaphragm Blades||9|
|Number of Elements||8|
|Number of Groups||6|
|Photo Filter Thread Size||72 mm|
|Real Angle Of View||18 Degrees|
|Shipping Weight||2.75 pounds|
|Style Name||135mm Lens|
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|Sold By||Adorama Camera||Amazon.com||Amazon.com||RitzCamera||Amazon.com||Amazon.com|
|Compatible Camera Mount||Sony/Minolta Alpha||Sony/Minolta Alpha||Sony/Minolta Alpha||Sony/Minolta Alpha||Sony/Minolta Alpha||Sony/Minolta Alpha|
|Focus Type||manual_only||Screw drive from camera||Ultrasonic||Micromotor||Micro-type ultrasonic||Ring-type ultrasonic|
|Item Dimensions||3.15 x 3.9 x 3.15 in||3.5 x 4.53 x 3.5 in||2.76 x 2.05 x 2.76 in||3.03 x 4.8 x 3.03 in||2.99 x 3.39 x 2.99 in||3.27 x 4.37 x 3.27 in|
|Item Weight||1.61 lbs||2.31 lbs||6 ounces||1.21 lbs||0.88 lb||—|
|Lens Type||Prime lens||wide-angle||Prime lens||Zoom lens||Zoom lens||Zoom lens|
|Maximum Focal Length||135 millimeters||135 millimeters||35 millimeters||300 millimeters||135 millimeters||70 millimeters|
|Minimum Focal Length||135 millimeters||135 millimeters||35 millimeters||70 millimeters||18 millimeters||24 millimeters|
|Photo Filter Thread Size||72 millimeters||77 millimeters||55 millimeters||58 millimeters||62 millimeters||77 millimeters|
Smooth Transmission Focus: While subjects remain in sharp focus, out-of-focus backgrounds or foregrounds are blurred smoothly and evenly with gradation that thickens toward the edges ofthe frame for a pleasing aesthetic effect. Transmissive Brightness: After light passes through the apodization element, the lens aperture of f2.8 yields a T (transmissive brightness) equivalent of 4.5; a manual aperture ring can adjust T setting from 4.5 to 6.7. Wide Focus Ring: The dedicated manual focusing system is controlled by a wide focus ring that's comfortable to hold and gives you a solid, hands-on feel for pinpoint focusing of your subject. Circular Aperture: Because aperture blades form a near circle at the wide openings used for low-light shots, spot-light sources have a pleasing circular defocused effect.
From the Manufacturer
135mm F2.8 (T4.5) STF Telephoto Zoom Lens
This unique lens has been specifically deisnged to deliver smooth transitions between crisp in-focus areas and creamily defocused background and foreground areas. Featuring a manual aperture ring to provide direct, hands-on defocusing control and offers smooth, natural highlight diffusion. This 135mm lens promises a one-of-a-kind photographic experience.
When changing your aperture to defocus the background, the light sources appear blurred. This ‘bokeh’ effect of the blurred background can be enhanced with circular aperture blades used in this lens. Conventional aperture blades have flat sides creating unappealing polygonal shaped defocussed points of light. α lenses overcome this problem through a unique design that keeps the aperture almost perfectly circular from its wide-open setting to when it is closed by 2 stops. Smoother, more natural defocusing can be obtained as a result.
2008 Sony Electronics, Inc.
All rights reserved. Sony, the Sony logo, Alpha, “α” and Super SteadyShot are trademarks of Sony. All other trademarks are trademarks of their respective owners.
Legal DisclaimerDoes not include the pelican case or it's contents.
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Top customer reviews
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Build Quality: Superb. This is a substantial piece of metal and glass, that comes nicely wrapped in its own soft, well padded leather bag, a lens hood with black non-reflective lining and covers for the front (72mm) and back. The focusing ring is smooth, as is the aperture control ring.
Image Quality: Outstanding. While the STF (Smooth Transition Focus) is revered for its unmatched, silky smooth rendering of out of focus areas (bokeh), it does so while also being one of the sharpest lenses even wide open. The images tend to have a unique 3D feel.
Usability: This is a manual focus only lens, hence not for people who can't do without auto-focus. In fact, there is no focus confirmation. For them, Sony's 135mm/f1.8 Zeiss would be the answer. It is also a better lens for low light performance. Outside of that realm, and if you're a willing participant in the system's focus-on-the-subject for its great rewards, like I have become, the STF lens has a lot to offer.
Focusing with this lens has been easy for me, even without using any manual focus assist feature. And if your camera has an assist feature similar to my primary camera (Sony SLT-A55), which allows a 7x-14x zoom (Live View as well as Electronic View Finder), it is even better. My back up camera (Sony NEX-3) goes a step further, with its Focus Peaking feature (All NEX-series cameras, and SLT-65 and SLT-77 now have it).
Unlike other lenses, this lens has two modes to control the aperture. Each mode affects a specific aperture diaphragm.
Auto Mode: This mode allows control of a traditional diaphragm through the camera, as in "Aperture Priority" mode. For this mode to take effect, the aperture ring should be set to "A". The aperture size ranges from f/4.5 thru f/32.
Manual Mode: This mode shifts the control to, an unconventional, step-less diaphragm with aperture size ranging from T4.5 thru T6.7. This is achieved by turning the aperture ring past the click (which identifies the Auto Mode selection).
Personally, I leave the conventional aperture wide open, while varying the step-less diaphragm given that for most practical purposes specific to this lens, I would be using aperture around f/5.6.
Another thing to note is that, although this lens is identified as 135mm/f2.8[T4.5], the f2.8 only relates to DOF, as the aperture is indeed wide open to f/2.8. However, due to couple of apodization elements used inside the lens, the transmissive setting "wide open" is f/4.5, hence the T4.5 denomination.
But let's be honest-- this is a difficult lens to use. It needs a lot of light. Anything short of bright sunlight might not do. It is manual focus only, and the nature of the lens disables the PD focus confirmation in manual mode (the green box that lights up).
Here is where the innovations of Sony's digital approach come into play, and help overcome these difficulties quite well. Focus peaking works perfectly, and thus it becomes a much more usable lens. When you are controlling the aperture, you can see the background melt away as the shot is composed. Image stabilization works also, which is nice on what is effectively a 200mm lens.
If you have an a77 the two make a great pair. Some of the more recent sample images have been from an a99, and it looks like that is great pairing as well. It has received high marks for use on a FF sensor, with minimal vingetting, softening, or distortion. On my a77, there is absolutely none I have noticed.
If you know you want it, you do. If you just *think* you want it, you probably don't. Seriously, it is expensive, heavy, and can be a real pain to get the shot you want.
In my opinion the unique qualities of this lens are well worth the extreme extra effort (and price). The results are beyond anything possible with other lenses, and probably even beyond what you can manipulate digitally.
Is a very specialized and unique lens, only manual focus but you can use the Peaking Level and Focus Magnifier functions to make focus easy; check your Alpha camera handbook.
If you are a only "auto-focus" person this great lens is not for you. But if you have experience manual focusing like old 135 film SLR camera times you are going to love this lens and shoot amazing pictures; the knowledge curve are going to be short. This lens is perfect to portrait, nature and many other kind of pictures.
It is only for Sony A-mount. You can not find it for any other camera mount.
I bought it directly on a Sony Store.
I had the original Minolta version of this lens and sold it only to buy the new Sony version. The optical formula is the same but the Sony version is lighter and has better build quality. The barrel is rugged all metal and the focus and aperture rings are well dampened and smooth. It is quite an impressive lens when you see it in person with its big font element (72mm threads) but it fits quite nicely in one hand.
Recently I've been using it on my a7II (for lighter travel) with a cheap “AF-NEX” adapter. It works great with this body and it’s very easy to nail focus using peaking and focus magnifier. Plus, the IBIS is a big help for taking sharp handheld pictures even indoors.