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10-22-2015, 12:06 PM   #1
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F-series lenses

Over the past couple of years, I have acquired three F-series lenses, a F-35-70mm, a 35-105mm and a 70-210mm. I haven't had a chance to really take any to task other than the 70-210mm, but found it to be absolutely stellar! The sharpness is stunning and equal to any lens I own, save for my FA-50 and FA-100 macros.


If I had any complaints about it, it would be the violent auto focus movement and it's butt-ugly appearance.... not that that has any real effect on the results it provides.


So.... I'm missing two in the series, the 24-50mm and the 35-135mm. What's your opinion of this series of lenses, overall? Are they all as sharp as the 70-210mm?

10-22-2015, 12:14 PM   #2
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I owned the 35-135 and on film found it soft partly because fi is slow and it required shooting wide open. On apsc I found it reasonably sharp - better at 135 than the 18-135 but that isn't from extensive pixel peeping. Just a basic overview.

I do highly recommend a hood.
10-22-2015, 12:19 PM   #3
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If you want a 35-135 keep your eyes on the marketplace in coming weeks

SMC Pentax-F 35-135 F3.5-4.5 - PentaxForums.com
10-22-2015, 12:22 PM   #4
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24-50 is very nice
35-135 i have tried to love but have not. OK not great iq, big and heavy and minimum focus is too long for product shots.

35-70 and 70-210 are the best values in the F line

10-22-2015, 12:28 PM   #5
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You'll find a lot of threads on the 35-70 including whether it is over-rated. Bottom line though is that for what it generally costs these days it is a great lens. Compact, easy to use macro mode, and gives you more length than the kit lens for times when you don't need to go so wide. I might pick up a 70-210 if I see a bargain version. Nothing I've tried at the long end (for bargain only lenses) has really pleased me.
10-22-2015, 12:49 PM   #6
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QuoteOriginally posted by UncleVanya Quote
I owned the 35-135 and on film found it soft partly because fi is slow and it required shooting wide open. On apsc I found it reasonably sharp - better at 135 than the 18-135 but that isn't from extensive pixel peeping. Just a basic overview.

I do highly recommend a hood.
There are other lenses that were trashed in the film days that are gems on APS-C. The A 135/2.8 for example...
10-22-2015, 01:46 PM   #7
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QuoteOriginally posted by boriscleto Quote
There are other lenses that were trashed in the film days that are gems on APS-C. The A 135/2.8 for example...
Agreed. The corners in that particular lens (35-135) had a bad reputation. Very soft edges. On the other hand that's not what I have seen on this lens on APSC. Also as I mentioned you can shoot at ISO 1600 for example rather than 100 or 400 and that makes a huge difference.
10-22-2015, 02:31 PM   #8
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QuoteOriginally posted by Dewman Quote
Over the past couple of years, I have acquired three F-series lenses, a F-35-70mm, a 35-105mm and a 70-210mm. I haven't had a chance to really take any to task other than the 70-210mm, but found it to be absolutely stellar! The sharpness is stunning and equal to any lens I own, save for my FA-50 and FA-100 macros.


If I had any complaints about it, it would be the violent auto focus movement and it's butt-ugly appearance.... not that that has any real effect on the results it provides.


So.... I'm missing two in the series, the 24-50mm and the 35-135mm. What's your opinion of this series of lenses, overall? Are they all as sharp as the 70-210mm?
Hi, I've had several F series lenses over the years, zooms, primes, et al. Today, I carry only a handful of Pentax lenses and a couple of Sigmas. My favorite lens of the bunch is the F 50mm F1:1.4. It is by far the best I have ever owned of the F series. If you go to my Flickr site, you will see many, many images with this stellar lens. You'll have to go back a few years in my site, but many of these images still remain amongst my all-time favorites. Here's a couple of which I speak. Don

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Last edited by DHA; 10-22-2015 at 02:34 PM. Reason: my mistake
10-22-2015, 07:32 PM   #9
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QuoteOriginally posted by Dewman Quote
Over the past couple of years, I have acquired three F-series lenses, a F-35-70mm, a 35-105mm and a 70-210mm. I haven't had a chance to really take any to task other than the 70-210mm, but found it to be absolutely stellar! The sharpness is stunning and equal to any lens I own, save for my FA-50 and FA-100 macros.
If I had any complaints about it, it would be the violent auto focus movement and it's butt-ugly appearance.... not that that has any real effect on the results it provides.
Well, the "violent auto focus movement" is one of the F 70-210/4-5.6's features -- it's a ~very~ fast focusing AF lens -- It's "not a bug but a feature".

As for its "butt-ugly appearance", well, er, it does have a wee bit of form-follows-function beauty. ... Even if it is still "butt-ugly"...

Actually, I find all of the F* lenses visually attractive, while I find all of the other F lenses rather, er, um, "plain". [And the same generality for the FA* and the other FA lenses.] But I digress...
10-22-2015, 08:31 PM   #10
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QuoteOriginally posted by fwcetus Quote
Well, the "violent auto focus movement" is one of the F 70-210/4-5.6's features -- it's a ~very~ fast focusing AF lens -- It's "not a bug but a feature".

As for its "butt-ugly appearance", well, er, it does have a wee bit of form-follows-function beauty. ... Even if it is still "butt-ugly"...

Actually, I find all of the F* lenses visually attractive, while I find all of the other F lenses rather, er, um, "plain". [And the same generality for the FA* and the other FA lenses.] But I digress...


Violent and butt-ugly or not, I still love 'em! My F-70-210mm has turned out to be a very good birder lens. Of course, they're not too far away, but.... oh my, how sharp the images are that it provides me!
10-23-2015, 05:08 AM   #11
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QuoteOriginally posted by Dewman Quote
butt-ugly appearance
Whaaaaaat?

I for one love the Star Wars appearance.

QuoteOriginally posted by Dewman Quote
So.... I'm missing two in the series, the 24-50mm and the 35-135mm. What's your opinion of this series of lenses, overall? Are they all as sharp as the 70-210mm?
The primes are excellent, too
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