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10-13-2021, 12:33 AM   #1
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Need advice on Lens what to chose

I'm in a bit of a bind, I need to cut down on the number of Lens I carry when going Out-Back or Backpacking through the Ozzie bush.

At the moment carry 5 Lens 2 of which I will never leave home without aSigma 18-35mm F1.8 DC HSM (Art) and aSigma APO 100-300mm F4 EX DG.


What I need is a Lens that will fit nicely between these two. Sigma make a Lensa Sigma 24-105mm f/4 DG OS HSM Art but not in K-mount, can anyone suggest a Lens that would suit.

10-13-2021, 12:50 AM   #2
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Go second-hand and pick up an older 28-135mm or similar, even manual focus if you don't need all the latest wizz-bang technology
10-13-2021, 01:03 AM   #3
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If you do not really need the fast aperture of the 18-35 I would suggest a 16-85 instead and you have to carry only 2 lenses into the bush.
10-13-2021, 01:05 AM   #4
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DA* 50-135 f2.8 and Sigma 50-150 f2.8 (if you can track one down) come to mind. Just guessing from your other lenses you aren't on a shoestring budget, and assuming from your profile you've got a K-70.
Maybe DFA 28-105 f3.5-5.6 if you forsee getting a full frame one day.

10-13-2021, 02:16 AM   #5
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The 55-300 PLM is not fast, skips a little range, but delivers great IQ with a fast autofocus in a very lightweight compact package.
10-13-2021, 02:46 AM   #6
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DFA 28-105 would be the perfect stop gap in my opinion.
10-13-2021, 03:00 AM   #7
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You could have a look at the older FA 28-105 as well, economical and decent quality, otherwise the current DFA 28-105 gives excellent results and fits in the middle of your other 2 lenses nicely

10-13-2021, 08:35 AM - 1 Like   #8
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I suggest Pentax DA 18-135. It is like made for backpacking. Light, compact, weather sealed, long focal length range.

So with you could manage with only two lenses or bring three lenses and have the option between fast zoom with narrow FL range or slow zoom with wide FL range.
10-13-2021, 11:42 AM - 1 Like   #9
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What do you shoot?

I'd consider leaving the 18-35 at home and get a 16-85 to pair up with 100-300. That would give you a two lens kit rather than three.
10-13-2021, 12:06 PM   #10
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I am not sure that the Pentax or 16-85mm or 18-135mm is in the same league as the Sigma 18-35mm f/1.8.

Do check out the Sigma 24-70mm F2.8 IF EX DG HSM.

Sigma 24-70mm F2.8 IF EX DG HSM Lens Reviews - Sigma Lenses - Pentax Lens Review Database
10-13-2021, 01:31 PM   #11
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So many options. I love my Pentax 18-135 for this sort of thing.
10-13-2021, 01:35 PM   #12
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I use the Pentax 16-85 on my Pentax K-3 II. It is an excellent lens.
10-13-2021, 02:00 PM   #13
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Pentax DFA 28-105 has good optical performance: sharp, good contrast, and decent flare resistance when sun is in frame. The compact size and light weight are good for long hikes.
10-13-2021, 02:20 PM   #14
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If speed is important you could try the 17-50 Sigma (or, if you have only new bodies, you could hold out for the new Pentax 16-50) and just accept the jump to 100mm.
10-13-2021, 02:32 PM   #15
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QuoteOriginally posted by DeadJohn Quote
Pentax DFA 28-105 has good optical performance: sharp, good contrast, and decent flare resistance when sun is in frame. The compact size and light weight are good for long hikes.
Don't leave out that it's WR, which neither of OP's current two have. I think it could be a top candidate if speed isn't a huge issue.
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