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04-02-2024, 04:02 AM   #1
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Looking for lenses that can do 22mm-85mm

Don't exactly know if this is the correct place to post this so move it if needed.


I am enjoying my 16-50mm DA* SDM but i often find myself not enjoying the wide end of the lens, as of late i have started liking the range of 22-24mm (30-38mm) and also using 40-44mm (67-70mm) but i always feel like i want more telephoto range. preferably id like something that can do 22mm-135 but the only Pentax lenses that do that are f3.5 and aren't the best optically. i think the best compromise would be a 22-85mm, (30mm-135mm) that gives me enough range on the wide end for close ups and tight spaces without too much distortion and still giving me room to work with while on the long end it will give me enough to work with when i need to work on a ~26 meter perimeter instead of being limited to ~12 meter max zoom.


I often find myself running out of zoom and miss the shot. I do have a 70-300mm but again its not as bad but still the same issue, when i need a zoom its perfect but if i want to shoot something but i don't have 5 meters to work with to get it into frame its kinda useless.

maybe I'm just lazy not swapping my lenses constantly but i feel like there should be a lens that covers that range since its an "almost all you need" when it comes to an automotive lens.

I am also using the Pentax K5.



feedback or info on this is welcome.

04-02-2024, 04:08 AM - 2 Likes   #2
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The best option is the DA16-85. Excellent optically and covers the range you want

p.s. this really belongs in the lens discussions forum
04-02-2024, 04:18 AM   #3
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16-85mm or 18-135mm, both produce great images
04-02-2024, 04:32 AM   #4
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QuoteOriginally posted by robgski Quote
16-85mm or 18-135mm, both produce great images
Are there any in F2.8?

04-02-2024, 04:40 AM   #5
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No, they are variable aperture. The closest one to your focal length requirements at F2.8 would be the D FA 24-70 (reviews here), which is a big lens also compatible with full frame (K-1). It seems very good, though.
If you're open to F4, there is also the DA 17-70 (discontinued so only 2nd-hand), but this one got mixed reviews from the SDM motor issues.
Something on a constant aperture that would include 85mm, I don't know...
04-02-2024, 04:54 AM   #6
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QuoteOriginally posted by DoubleDerp Quote
Are there any in F2.8?
QuoteOriginally posted by VictorDA Quote
No, they are variable aperture. The closest one to your focal length requirements at F2.8 would be the D FA 24-70 (reviews here), which is a big lens also compatible with full frame (K-1). It seems very good, though.
That's the thing... a lens with that kind of focal length range and f/2.8 constant aperture throughout is going to be big

One lens you might consider - though you'd have to settle for a good used example, as it's discontinued now - is the Sigma 17-70 f/2.8-4 HSM - or better still, the revised "C" Contemporary version. I haven't used one, but the reviews were generally positive...
04-02-2024, 05:02 AM - 1 Like   #7
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QuoteOriginally posted by BigMackCam Quote
a lens with that kind of focal length range and f/2.8 constant aperture throughout is going to be big
......and expensive !

The D-FA 24-70/2.8 is a good choice if f2.8 is needed, but something like the D-FA 28-105/3.5-5.6 would be more practical and less expensive.

If you can find one I would also recommend an old-un..... FA 24-90/3.5/4.5. Excellent optics, great zoom range. I wish i had never sold mine

ps moved the thread to lens discussion.

04-02-2024, 05:08 AM   #8
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QuoteOriginally posted by BigMackCam Quote
That's the thing... a lens with that kind of focal length range and f/2.8 constant aperture throughout is going to be big

One lens you might consider - though you'd have to settle for a good used example, as it's discontinued now - is the Sigma 17-70 f/2.8-4 HSM - or better still, the revised "C" Contemporary version. I haven't used one, but the reviews were generally positive...

Big and heavy lens, not much of an issue for me. i'll just get a solid steel cast for the base-plate to balance it or get used to it destroying my wrists.

main thing i want is a constant 2.8. no point in getting variable aperture when most of the time i'm using it in situations where lighting is minimal to moderate.

I know sigma made great lenses in that time so i don't doubt its quality and its range is close enough to what i want but again, 2.8-4 and apparently its only 2.8 at 17mm which is lower then where i want it to be.

---------- Post added 04-02-24 at 10:15 PM ----------

QuoteOriginally posted by pschlute Quote
......and expensive !

If you can find one I would also recommend an old-un..... FA 24-90/3.5/4.5. Excellent optics, great zoom range. I wish i had never sold mine
Is it a solid f3.5 or variable aperture?

Last edited by DoubleDerp; 04-02-2024 at 05:16 AM.
04-02-2024, 05:23 AM   #9
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QuoteOriginally posted by DoubleDerp Quote
Big and heavy lens, not much of an issue for me. i'll just get a solid steel cast for the base-plate to balance it or get used to it destroying my wrists.

main thing i want is a constant 2.8. no point in getting variable aperture when most of the time i'm using it in situations where lighting is minimal to moderate.

I know sigma made great lenses in that time so i don't doubt its quality and its range is close enough to what i want but again, 2.8-4 and apparently its only 2.8 at 17mm which is lower then where i want it to be.
Then the D FA 24-70 is probably your best choice - not least because, unlike many zoom lenses, it performs well wide open...
04-02-2024, 05:52 AM   #10
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DA* 50-135 - Not quite the wide end you want but stunningly good and it has the long end you desired. Add it to your existing 16-50.

Other options:

Upgrade the body to slow higher iso performance. Then the f2.8 might be less relevant.

Upgrade the body to full frame. Then the focal length range of 28-105 is almost dead on your desired range. As a bonus the k-1ii also in crop mode matches your k-5 so existing lenses outside this new one perform as well as before.

Finally, if the range is the most important thing… switch systems. A couple of mirrorless full frame 35-f2-2.8 lenses exist that are excellent.

---------- Post added 04-02-24 at 09:27 AM ----------

If you own the HD DA 1.4x another approach would be to use that on the 16-50. That gives you a 22.5-70 f4 constant aperture lens. Add a newer body like a KP or K3iii and your f stop difference is less noticeable (depth of field notwithstanding).

---------- Post added 04-02-24 at 09:32 AM ----------

Verified compatibility using the chart on this page: HD PENTAX-DA AF REAR CONVERTER 1.4X AW / Converter / AF Lens Adapter / K-mount Lenses / Lenses / Products | RICOH IMAGING

Scroll down to see the list.

Last edited by UncleVanya; 04-02-2024 at 06:31 AM.
04-02-2024, 06:52 AM   #11
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QuoteOriginally posted by DoubleDerp Quote
Is it a solid f3.5 or variable aperture?
It is variable... 3.5-4.5. But I concur with the suggestion of using a camera with better high ISO performance or just using a higher ISO and do noise reduction in PP

Depending on your use case, relying on f2.8 (or faster) can be limiting in itself. 100% accurate focus is required, and even then the DOF may not be enough. I would take a well focussed (and sufficient DOF) noisy shot over a sub-par focussed noiseless one any day of the week.
04-02-2024, 07:18 AM   #12
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QuoteOriginally posted by DoubleDerp Quote
i think the best compromise would be a 22-85mm, (30mm-135mm) that gives me enough range… i feel like there should be a lens that covers that range since its an "almost all you need" when it comes to an automotive lens.
QuoteOriginally posted by DoubleDerp Quote
Are there any in F2.8?
I can't find one single lens that covers the entire 30-135mm range at f/2.8, but there are a couple of options that come close.

If you value the wide end more:
RF24-105mm F2.8 L IS USM Z

If you want that little extra bit of reach and brightness, and don't mind going third-party:
35-150mm F/2-2.8 Di III VXD (Model A058) | Lenses | TAMRON

But lenses don't exist in a vacuum. For the Canon lens I'd want to pair it with an R5, but the cost savings with the Tamron lens would let it match up with a Nikon Z8. So that's an important part of your decision as well. But either camera will also give you some upgrades over the circa-2010 K5, in addition to the brighter and more convenient lens that you are looking for.
04-02-2024, 08:00 AM - 1 Like   #13
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The D-FA 24-70/2.8 is a good choice if f2.8 is needed
Or the older tamron 28-75mm. The format/range is rather fullframe oriented.

Technically, a zoom, high quality, both wide and tele, and a bright f2.8 constant aperture....is asking for the impossible compromise, I’am afraid. Would also disregard implicit size and prize restrictions in the this compromise.


If you are too lazy to swap lenses (as you hint yourself) the cheaper solution might be to have two camera’s and the 17-50 & 50-135 ,..., especially when you say size isn’t a problem?
04-02-2024, 11:41 AM   #14
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How about a trio of prime lenses? A DA21 Ltd, an FA43mm Ltd, and an FA77mm Ltd.
04-02-2024, 01:34 PM   #15
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A useful resource for finding answers to lens question like this is here Pentax Lens Search | PentaxForums.com
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