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11-28-2018, 07:38 AM - 1 Like   #1
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SMC Pentax 15mm F3.5

From the review page:
The SMC Pentax 15mm provides the largest rectilinear, full-frame field-of-view ever delivered by Pentax. Horizontally, 100 degrees can be captured by this heavy yet relatively compact lens. It features 4 built-in filters since no front thread is present.
Initially this lens was produced using a slightly lighter optical formula employing an Aspherical Element (AL). This version was quickly taken out of production by Pentax, probably due to cost of manufacturing, and only few of these lenses exist today.
The spherical version of this lens came in two optically identical variants, but with different engraved names: SMC PENTAX 1:3.5/15 (early variant) or smc PENTAX 1:3.5 15mm (later variant)

Here are a few of my examples.


K1000 SE, K15f3.5, Lomo 400


K-1 mII Ltd, K15f3.5. The camera was set on timed release, then I put it on a flat surface on its back to take this shot of the ceiling. This might give some idea of field distortion, but it's not a scientific analysis.


K-1, K15f3.5. Demonstration of the "worst" case of flare I've thusfar encountered ("worst" because I kind of like it). Knowing how to generate it, I like having the option of using it in my images. Careful attention to lightsources can minimize or eliminate it if desired.

More here: K15f3.5.

02-24-2019, 04:53 PM   #2
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Magnolia Falls
Upper set of falls, Newton County, AR
K-1 mII Ltd Silver, K15f3.5

Last edited by jcdoss; 03-14-2019 at 12:14 PM.
03-25-2019, 06:03 AM   #3
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Creeper
K-1 mII Ltd Silver, K15f3.5
04-03-2019, 01:07 AM - 1 Like   #4
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Boredom Of Youth

A favourite "Lady" from the harem, hence her name “Mistress"(Pentax-A 15mm F3.5)




Last edited by Kerrowdown; 04-03-2019 at 01:13 AM.
06-26-2019, 04:55 PM   #5
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Breakfast, Lunch, and Desserts
K-1 mII Ltd Silver, K15f3.5
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