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07-24-2015, 04:46 AM   #1
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Your one prime to rule them all

Hey there,

Since I really enjoy reading through your posts in my other thread Your Set - 3 primes nothing more I was wondering which lens you would choose for a Pentax APS-C DSLR if you had to narrow it down to ONE PRIME, and nothing else.
Obviously many would prefer a really brilliant zoom for the advantages of flexibility, but for the sake of argument, let's assume you HAVE to take a prime.

Which one would it be?

Currently, I am thinking it would probably have to be my beautiful FA 31 F1.8 Limited, since that is the lens I currently end up using most of the time....

07-24-2015, 05:12 AM   #2
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For me, I hate to say it, but it would probably be the Sigma 24mm/1.8. A wide-ish fast lens with very nice close focusing. It checks all the boxes for me, I'm quite glad I bought it. I love my DA15 more, but it's just not as versatile. The DA21 also gets a lot of love from me, and I prefer it for its superior flare resistance, but if it were only one, the 24 Sigma would edge it out.
07-24-2015, 05:24 AM   #3
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If we can choose from 3rd party lenses i will go for Sigma 35mm F/1.4 Art


Pentax FA 43mm F/1.9 ltd
07-24-2015, 05:31 AM   #4
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If I had to choose only between my DFA 100mm Macro WR and my DA-15mm Ltd, I would take the DFA 100mm with me. It's more versatile than the wide-angle one. Weather Resistance (WR) counts.

07-24-2015, 05:41 AM - 1 Like   #5
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F*300 4.5 ...... puts a smile on your face every time....

Hoi An smiling lady.JPG
by Noel Leahy, on Flickr
07-24-2015, 05:57 AM - 1 Like   #6
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Yeah, I quite like all the lenses that I have, but most of them are not "for everything". DFA 100mm is great for telephoto and macro, but its AF is not super fast and its too long for a lot of genres. Samyang 14mm is great, very sharp, but at 14mm its so ultra--wide that its just not suitable for a lot.
So I would choose a lens between 24 and 50mm, something like DA 35mm. Pentax makes this great HD DA 35mm f2.8 macro, which I never used, but if I had to live with just lens, that would be a good choice. True macro, comfortable focal length for APSC, and acceptable speed. Or the Sigma 35mm art, for faster aperture, but I don't know how good its AF is. And of course the FA 31mm ltd, which I also don't have lol, but from everything I see its pretty great
07-24-2015, 06:02 AM - 1 Like   #7
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Definitely my smc DA 35 Ltd. I have the 15, 70, and a super tele zoom. My 35 is most often on the camera. Its what I put on at the end of the day when I put the camera on the dresser ready to shoot. Portrait, groups, landscape, macro, my dog, etc. Versatile in my books. I sold the 43.
07-24-2015, 06:03 AM   #8
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DA* 300 f4

07-24-2015, 06:09 AM - 1 Like   #9
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FA* 85mm/f1.4
07-24-2015, 06:09 AM   #10
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I go the Sigma 35mm f1.4 Art...
07-24-2015, 06:14 AM   #11
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Although it is not not my most used lens, if it had to be only one, it would be the FA31. It is peerless for bokeh in its class, it's fast enough, sharp enough, small enough, and the angle of view on APS-C is close to a perfect normal.
07-24-2015, 06:18 AM   #12
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Most useful prime I own - probably the FA 31mm, so i'll go with that. It's very sharp, has wonderful bokeh and the focal length suits APSC.

It's not my favourite though - the FA* 85mm is absolutely stellar and the finest piece of glass i've ever owned. Pixie dust in spades!

Last edited by Papa Lazarou; 07-24-2015 at 06:23 AM.
07-24-2015, 06:23 AM   #13
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QuoteOriginally posted by Papa Lazarou Quote
It's not my favourite though - the FA* 85mm is absolutely stellar and the finest piece of glass i've ever owned.
The FA*85 is truly amazing. I had one for a couple of days but returned it because of its massive size and weight.
07-24-2015, 06:29 AM - 1 Like   #14
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FA 77mm Limited.
07-24-2015, 06:33 AM   #15
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kinda torn between one of my 50's and my A 100mm f4 ......

probably the A 100mm..... it's just soooooooo smooooooooooooooooooooooooooth......

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