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SMC Pentax-DA* 16-50mm F2.8 ED AL [IF] SDM Review RSS Feed

SMC Pentax-DA* 16-50mm F2.8 ED AL [IF] SDM

Sharpness 
 8.4
Aberrations 
 7.6
Bokeh 
 8.3
Autofocus 
 7.8
Handling 
 8.5
Value 
 7.5
Reviews Views Date of last review
138 531,576 Sun November 12, 2023
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Recommended By Average Price Average User Rating
83% of reviewers $723.38 8.36
SMC Pentax-DA* 16-50mm F2.8 ED AL [IF] SDM

SMC Pentax-DA* 16-50mm F2.8 ED AL [IF] SDM
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SMC Pentax-DA* 16-50mm F2.8 ED AL [IF] SDM
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Description:
Like all other DA lenses, the SMC Pentax DA* 16-50mm is designed exclusively for Pentax APS-C format DSLR cameras. It was announced in late February, 2007. It auto-focuses with an SDM ultrasonic motor on the K10D (firmware 1.30) and newer cameras. On older cameras the lens will auto-focus with the 'screw drive' mechanism.

SMC Pentax-DA* 16-50mm F2.8 ED AL [IF]
© www.pentaxforums.com, sharable with attribution
Image Format
APS-C
Lens Mount
Pentax K
Aperture Ring
No
Diaphragm
Automatic, 9 blades
Optics
15 elements, 12 groups
Mount Variant
KAF2
Check camera compatibility
Max. Aperture
F2.8
Min. Aperture
F22
Focusing
AF (in-lens motor or screwdrive)
SDM
Quick-shift
Yes
Min. Focus
30 cm
Max. Magnification
0.21x
Filter Size
77 mm
Internal Focus
Yes
Field of View (Diag. / Horiz.)

APS-C: 83-31.5 ° / 74-27 °
Hood
PH-RBJ 77 mm
Case
S100-140
Lens Cap
O-LC77
Coating
SMC,SP
Weather Sealing
Yes (AW)
Other Features
AF/MF Switch
Diam x Length
84 x 98.5 mm (3.3 x 3.9 in.)
Weight
565 g (19.9 oz.)
Production Years
2007 to 2021
Pricing
$1049 USD current price
Engraved Name
smc PENTAX-DA* 1:2.8 16-50mm ED AL [IF] SDM
Product Code
21650
Reviews
User reviews
In-depth review
Unofficial Full-Frame Compatibility Tests by Pentax Forums
☆☆☆ No coverage at any setting
Show details
Notes
Internal zoom.
Three aspherical elements and two ED elements.

Features:
Screwdrive AutofocusSupersonic AutofocusQuick ShiftWeather SealedInternal FocusingAutomatic ApertureAPS-C Digital OnlyDiscontinued
Purchase: Buy the SMC Pentax-DA* 16-50mm F2.8 ED AL [IF] SDM
In-Depth Review: Read our SMC Pentax-DA* 16-50mm F2.8 ED AL [IF] SDM in-depth review!
Sample Photos: View Sample Photos
Price History:



Add Review of SMC Pentax-DA* 16-50mm F2.8 ED AL [IF] SDM Buy the SMC Pentax-DA* 16-50mm F2.8 ED AL [IF] SDM
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Sort Reviews by: Date | Author | Rating | Recommendation | Likes (Ascending) Showing Reviews 31-45 of 138
Inactive Account

Registered: November, 2009
Location: Ninole, Hawaii
Posts: 74
Review Date: December 16, 2009 Recommended | Price: $744.00 | Rating: 10 

 
Pros: closeup capability, sharpness, versatility
Cons: cannot use buitl in flash close to subject as lens edge causes shadow

As a macro photographer with a 100mm attached, I needed a lens that could get me
back with a wider angle of my floral subjects on my K-10D. This is an amazing lens with the capability of being as close as ca. 15 cm with awesome results. Great.
   
Site Supporter

Registered: January, 2010
Location: Oppede 25 milles S-E Avignon
Posts: 23
Review Date: January 24, 2010 Not Recommended | Price: $1,200.00 | Rating: 6 

 
Pros: qualité optique
Cons: SDM

J ai eu la chance de pouvoir essayer cet objectif avant un achat plaintiff. Certes J'ai été séduit par la qualité optique, par le rendu des couleurs, la qualité
apparente de la fabrication; Mais tout cela un pied d'égalité Été gaché le SDM Qui est tombé en panne.
Je suis pentaxiste depuis plus de quarante ans. J'ai acheté CERTAINS de mes FA * Il ya plus de vingt ans et je n'ai jamais eu de problème avec eux. Ils parfaitement fonctionnent. Au vu de la proportion d'objectifs DA16-50 AYANT eu des problemes je pense que le systeme SDM est fragile et réparations Les Très couteuses. De Plus
J'ai pu comparer la vitesse de mise au point du DA 16-50 et du FA * 28-70. Identical elles sont.
En conclusion payeur tres cher un objectif à cause du SDM et que cet SDM SE Revelle fragile et Coûteux en réparation, N'EST PAS Une affaire Bonne.
Il Faudra aussi se poser la question de savoir combien d'années les SDM auront à vivre?
   
Senior Member

Registered: September, 2009
Location: Switzerland
Posts: 252
Review Date: February 1, 2010 Recommended | Price: $744.00 | Rating: 10 

 
Pros: Weather Resistant, Optical Quality, SDM, Focus Speed, Silent
Cons: Weight & Size, Shadow with popup flash

Had this lens for 1 month now to replace the 18-55 ALII and give some extra on the wide end on my K20D.
Already own the 50-135 with which I was very happy.

I find the AF speed to be significantly faster than the kit lens... also faster than the 50-135 and almost completely silent.
While I suggested that its weight & size are negative aspects... this is in comparison to the kit lens... comparing with the 50-135 I found it surprisingly compact.
Image quality is excellent, I also have pleasing results from 2.8
Well woth the 744 USD I paid new from Adorama.
Close focus ability is impressive... almost touch the subject with the front element.
While I dont use protective filters, the 77mm front element means that they would be expensive.
   
Veteran Member

Registered: June, 2009
Location: Minneapolis - St. Paul
Posts: 3,067
Review Date: February 28, 2010 Recommended | Price: $750.00 | Rating: 10 

 
Pros: Superb build quality, sharp wide-open, quiet and fast SDM focusing
Cons: None
Sharpness: 10    Aberrations: 7    Bokeh: 8    Autofocus: 10    Handling: 10    Value: 9    New or Used: New    Camera Used: K-5   

Awesome lens, no problems with it. Nowhere near as soft as people say it is wide-open, in fact it's quite sharp.
   
New Member

Registered: September, 2008
Location: Cork, Ireland
Posts: 19
Review Date: April 21, 2010 Recommended | Price: $600.00 | Rating: 9 

 
Pros: Fast, quiet, excellent in low lighting conditions
Cons: A little pricey and there seem to still be some quality issues on some units (mine works perfectly)

Nice Lens overall. I returned the first one I got as it was a little off balance but the second one has been working fine for the last couple of years. It's fast to autofocus and is easy to fine-tune the focus when necessary. The weather-resistance is also reassuring although I wouldn't push the limits on it.
   
Pentaxian

Registered: June, 2008
Location: Holy Land
Posts: 1,165
Review Date: May 23, 2010 Recommended | Price: $600.00 | Rating: 10 

 
Pros: Sharpness, colour, contrast, bokeh, weatherproof, silent
Cons: slow SDM AF

I've got a good copy, it's very sharp, fast and silent, color rendition and bokeh is great. A minor issue is the AF could be a bit faster, but otherwise it's fast enough for me.

I think it's the perfect zoom lens.
   
Site Supporter

Registered: December, 2007
Location: Montreal
Posts: 1,249

3 users found this helpful
Review Date: June 8, 2010 Recommended | Price: $700.00 | Rating: 10 

 
Pros: sharp, contrasty, WR, silent (SDM)
Cons: barrel distortion @16mm, big and heavy, zoom friction around 28mm
Sharpness: 10    Aberrations: 8    Bokeh: 8    Autofocus: 8    Handling: 7    Value: 6   

This lens had a bad reputation due to a lot of bad copies but its performance is fantastic when you get a good copy.

One of the complaint about this zoom is the relatively poor performance at f/2.8. Actually it's already quite sharp in the center, borders need about f/5.6 to get very sharp.

Optically, the only real complain I could do about this lens is the heavy barrel distortions @16mm. I know you can correct them by software (or even in-camera starting with the K-7 and K-x) but it's another step and you'll loose borders meaning that you don't get your full 16mm.

Build construction is great in general (and much better than lenses costing more like the Canon 17-55 IS). The only thing I don't like is the friction when zooming at around 28-35mm. The mechanism never feels as smooth as the excellent DA* 50-135mm.

The big downside for me regarding this lens is the size and weight. I think it doesn't balance well on my K-7 if I'm not using the external grip.

Pictures taken with the DA* 16-50mm
   
Veteran Member

Registered: February, 2008
Location: Waterloo, Ontario
Posts: 4,461
Review Date: June 19, 2010 Recommended | Price: $900.00 | Rating: 9 

 
Pros: Sharp, great colour/contrast, build
Cons: heavy, barrel distortion at 16mm, price
Sharpness: 10    Aberrations: 9    Bokeh: 9    Autofocus: 8    Handling: 9    Value: 7   

Given all the QC issues that surround this lens I was reluctant to buy one and put off purchasing for some time. In fact I seriously considered the DA 14/2.8 or DA 15/4 as a substitute. However, given the fact this lens filled a big gap at the wide-angle end of my collection and the convenience of a zoom I eventually bit the bullet and bought one. I’m glad I did. After a couple of months I think I have a good copy and I’m quite pleased with it. As many others have stated above the colour/contrast of this optic are great. It is very well built and focus is fairly fast. It is pretty soft at the edges at 2.8 but this can be a bit of a bonus when shooting portraits. Things sharpen up dramatically in this area when stopped down. I like the lens hood and the fact it can be reversed for easy storage in the bag – a nice touch. The hood also features a removable tab that permits the use of a circular polarizer – again another nice touch. On the down side this tab is almost certain to be lost the minute one removes it.

The lens also has a few cons. It is a hefty lens and there are some CA issues as noted above. Barrel distortion is pronounced at 16mm and although I was aware of this issue the degree of distortion was greater than expected. Not that I use it often but the popup flash is rendered useless due to severe vignetting with the lens hood. These flash issues disappear with a shoe mounted flash. Others above have noted “zoom creep” as a problem. My copy is pretty stiff in this regard, especially around 28-35mm, but I’m sure it will loosen up with greater use but I'm pretty sure this won't be a problem area for me.

These issues aside this is the best zoom lens I have ever used and it has assumed a permanent place in my bag.
   
Veteran Member

Registered: November, 2008
Location: Oregon, USA
Posts: 681
Review Date: July 13, 2010 Not Recommended | Price: $750.00 | Rating: 4 

 
Pros: General quality, weather sealing, sharpness
Cons: Fringing, slow AF, weight (sorta), zooming issues, SDM FAILURE
Sharpness: 8    Aberrations: 6    Bokeh: 8    Autofocus: 4    Handling: 6    Value: 6    New or Used: New   

I bought this lens to replace my kit 18-55 and I am glad I did. However, the focus speed when coupled to my k200d isn't as fast as I had hoped for when I shelled out $750 US.

The focus is near silent which is nice.

I was really disappointed to see blue fringing in show up rather glaringly in a recent shoot with a client. Luckily the I had lots of other shots that were fringe-free.

I shoot mostly around f4-f8 with this lens.

The 2.8 aperture is really nice in indoor situations.

Here is Part 1:
[YT]http://www.youtube.com/watch?v=2FeNw5OlcZ8&feature=related[/YT]

Part 2(Image samples):
[YT]http://www.youtube.com/watch?v=UwGMMFpboYU&feature=related[/YT]


UPDATE 3/11: I've had this lens for over a year now and I have some disappointing news. My zoom ring got stuck at 35mm right before a shoot with a client and I was forced to use my backup camera the entire shoot. After being in the shop twice to get it fixed (thankfully it was still under warranty) they weren't able to restore it to like new status. The lens now zooms the entire range but it will get caught randomly. I can always jiggle it free but this should never happen. If you need a lens in the zoom range and can forgo the weather sealing I would suggest looking at the Sigma and the Tamron.

I am still recommending this lens for those of you that do need the weather sealing because overall this lens is great. It's just that for most people, the weather sealing is not enough to justify the price.

UPDATE 2: 11/11

Lens is back in the shop. Zoom ring busted again. Also, Autofocus just stopped working. I'm thinking the SDM bug finally caught me. Talked to the lady at the shop and she was telling me that she has seen a lot of Pentax 16-50s come through. Needless to say that I'm rather frustrated. I really need that weather sealing and I don't think there are any other alternatives right now. I don't want a rain cover. Not practical and I bought the Pentax specifically for the sealing. I knowingly chose the sealing over the slightly higher quality of the sigma. I no longer recommend this lens.
   
Site Supporter

Registered: February, 2010
Location: Salt Lake City, UT
Posts: 1,910
Review Date: August 12, 2010 Recommended | Price: $651.00 | Rating: 9 

 
Pros: great focal length, pairs well with the 50-135, fast glass, sharp
Cons: Possible sdm failure, not full frame

The only reason this lens isn't getting a 10 is that mine had an sdm failure. The repair under warranty round trip took less than a week, and was mostly painless.

What's not to love about this lens? It's almost as sharp at f4 as the DA 15mm Limited. It's weather sealed, it feels solid, and overall I've been very happy with it.

The color rendition, build quality, IQ, and bokeh are all on par with the other DA zooms.

If you buy this lens, (and it doesn't have an SDM failure), you'll be happy with the results. If somehow mine was destroyed, I'd buy it again tomorrow and hope for no SDM issues.
   
Site Supporter

Registered: April, 2010
Location: Calgary, AB
Posts: 4,884
Review Date: August 15, 2010 Recommended | Price: $800.00 | Rating: 10 

 
Pros: image quality, colour rendition, sharpness
Cons: somewhat heavy, weakest at 16mm and f2.8

There are plenty of reviews dissecting the pros and cons of this lens, I just wanted to share what it is like to use, ideally for landscapes, street scenes and indoor shots.

I have owned this lens for a year and used it almost exclusively for most of that time. I still have another year on warranty but have decided that if the motor gives out beyond that point I would fix it. It is that good. I am often looking for optimum depth of field so I use this lens between f8 and f13 much of the time and it delivers. I do find it is weakest at 16mm so I am looking for a prime at the wider end. I know this lens has had quality control issues and I was really anxious when I bought it (it was the only "kit lens priced" option in stock when I bought my 20D) but every time I put this lens back on my camera I am glad I took the chance.
   
Veteran Member

Registered: April, 2008
Location: USA
Posts: 1,901
Review Date: August 24, 2010 Recommended | Rating: 9 

 
Pros: Image quality, beautiful build, near silent AF
Cons: Heavy and big

I got this lens used off craigslist at quite bargain and sent it in to have it cleaned and adjusted and still came out well.
Anyway, my first thoughts were "Wow ". This is the first DA* lens I have owned so the constuction and silent SDM really impressed me. It is a little big ( 77mm filter ) and heavy ( 600g ) but I love the smooth finish and feel. I have never really had a situation that the IQ was a question either. It is sharp in the center at all apertures. NO, its not a prime but in combination with the colors and contrast this versitale zoom renders beautifully. I love the weather seal also living here in Seattle because I can get out in times I normallly wouldn't with another lens.
   
New Member

Registered: October, 2009
Location: Perth
Posts: 1
Review Date: September 2, 2010 Recommended | Price: $900.00 | Rating: 9 

 
Pros: sharp, excellent rendering, colour, clarity
Cons: autofocus often slightly off, barrel distortion at 16mm

I have been really happy with this zoom. Bought it to replace the DA 16-45 which I did not really like. The difference is like night and day. I find it to be sharp from 2.8 (I've heard its not great at the edges at this aperture but haven't noticed as I'm usually shooting portraits / close ups at 2.8 and these are great.) From f 5.6 it is extremely sharp. More importantly it just seems to take really pleasing photos, in focus areas have a real pop to them and the transition to out of focus is nice. I find it hard to precisely describe the characteristics of a lens that lead to this, its more than sharpness and smooth bokeh and seems to lie in between the the two in this vague characteristic people seem to refer to as rendering. Anyway this lens has it to an extent I've never seen in a zoom before. Build quality is fantastic.

Now for the minuses, focusing is not very reliable with my K10d which often prompts me to stop down to get a larger depth of field than I otherwise would like. (I acknowledge that this is probably mainly to do with the camera but it seems more of an issue with this lens than some others I've used) Also there is fairly significant barrel distortion at 16mm.

All in all I think this is an excellent underrated lens. I wasn't expecting it to be nearly as good as it is after reading reviews and opinions online.
   
Veteran Member

Registered: February, 2007
Location: Sterling, VA, USA
Posts: 6,275
Review Date: September 14, 2010 Recommended | Price: $800.00 | Rating: 9 

 
Pros: sharp, constant aperture, weather sealing
Cons: nagging fear of SDM failure

The ONLY reason I took a chance on this lens was to get the weather sealing. I have a DA 16-45 which I absolutely love, but I was always worried about using it out in the weather. So far I like the lens. Its sharp and the AF is fast and precise (so far). Despite my nagging fears of potential SDM failure I decided to take a chance and would recommend this lens. Hopefully Pentax has worked out the SDM issues because this lens deserves a good rep.
   
Senior Member

Registered: October, 2009
Location: Thunder Bay
Posts: 184
Review Date: September 29, 2010 Recommended | Price: $700.00 | Rating: 9 

 
Pros: weathersealed (and tested). build, resolution
Cons: weight, price

This lens is fantastic. i love using it, in-fact i sold most of my pentax gear once I purchased this lens because it did what i had wanted all my other lenses to do. i am amazed at how nice this piece of glass preforms. no sdm issues, and the lens works even after it's been dunked in the lake (by accident) and then covered in mud... and then washed in the lake. I shot a whole day in a thunderstorm with the k20d and had no issues (with the camera or lens)

love it
if you are thinking of getting one and need this range... get it
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