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06-22-2010, 02:48 PM   #1
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14 or 15mm Prime

I didn't think I'd miss it, but I miss my 10-20mm Sigma and am going to purchase the Pentax 14mm or 15mm prime, but would like input on benefits or downsides of either lens.



06-22-2010, 02:57 PM   #2
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I've got the 14mm and i'm going to change over to the 15mm.
They are both well made and have good image quality but the 14mm is so bulky that it just gets left behind to often. The 15mm also handles shooting into the sun much better.
The 14mm is a little wider and faster, so would be more suited for someone who shoots inside or dim light without tripod. The 14mm isn't that sharp wide open though.
06-22-2010, 03:21 PM   #3
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One aspect of the 14mm I love is how close I can get to a subject for close up focusing. This makes images with flowers pretty cool. Any idea on the difference in the minimum focal length of the two lenses? Something to consider. Also the faster glass in the 14mm is great for shooting dark interior shots. As for size, its dwarfed by the DA 300mm lens whcih goes everywhere with me.
06-22-2010, 03:31 PM   #4
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For closeup fun, DA14 is ok. For scenery, the optics suck so bad I would not even bother. Get the 15, forget the 14. I am speaking as a DA14 owner. Its optical performance belongs to 2 decades ago. Pentax should be ashamed.

Last edited by wlachan; 06-22-2010 at 04:25 PM.
06-22-2010, 04:59 PM   #5
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I didn't think the 14 was that bad, but certainly most of what it has going for it is the f/2.8 aperture, and mine wasn't terribly sharp wide open either. I let mine go in favor of the 15, and have no regrets.
I have a 12-24 for when I need wider and don't mind bigger. There isn't much to say between the 14 and the 12-24 for size.
06-22-2010, 05:23 PM   #6
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As the dozens of previous threads comparing these and other wide angles lenses suggest, the main tradeoff is the slightly wider focal length and larger aperture or the 14 agaisnt the somewhat higher IQ and much smaller size of the 15. Both lenses focus almost equally close and price is comparable (15 cheaper in the US, 14 chepaer in some other countries). Personally, I think f/2.8 is over-rated in an ultrawide. At 15mm, you don't need shutter speeds beyond 1/10" or so. f/4 is almost always good enough.
06-22-2010, 05:49 PM   #7
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I didn't use my DA14 wide open very much but for the most part, the above posters are correct, IMO. It was a great lens for some things and a good lens for others. The DA15 on the other hand, half the size, still good for closeup stuff, and shines brightly on longer distances. Mine rode the shelf for so long though that it found a new home here on the marketplace.


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