This week we've spotted numerous deep discounts on both Pentax and third-party lenses, including the lowest prices of the year on Sigma lenses!

Top discounts can be found below, and, as always, the full and current list is available through the deal finder.

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K-mount Lenses

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HD DA 18-50mm F4-5.6 WR RE
32% Off / $84 Below Average

• $177 @ B&H Photo
• $250 @ Amazon
• $297 @ Adorama

Year's price range: $147 - $297
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HD DA 20-40mm F2.8-4 Ltd. WR
26% Off / $173 Below Average

• $497 @ B&H Photo
• $671 @ Amazon
• $797 @ Adorama

Year's price range: $497 - $797
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FA 77mm F1.8 Ltd.
17% Off / $135 Below Average

• $652 @ Amazon
• $697 @ B&H Photo
• $797 @ Adorama

Year's price range: $652 - $797
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DA 50mm F1.8
13% Off / $13 Below Average

• $87 @ Adorama
• $117 @ B&H Photo

Year's price range: $87 - $117
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D FA 100mm F2.8 WR Macro
10% Off / $44 Below Average

• $397 @ Adorama
• $547 @ B&H Photo

Year's price range: $397 - $547
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DA 50-200mm F4-5.6 WR
5% Off / $9 Below Average

• $170 @ Amazon
• $197 @ B&H Photo
• $197 @ Adorama

Year's price range: $170 - $197
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Third-Party Lenses

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Tamron 28-75mm F2.8 AF XR Di LD Macro SP
23% Off / $114 Below Average

• $379 @ B&H Photo
• $531 @ Amazon

Year's price range: $379 - $499
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Sigma 35mm F1.4 DG HSM A
22% Off / $188 Below Average

• $649 @ B&H Photo
• $649 @ Adorama
• $649 @ Amazon

Year's price range: $649 - $899
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Sigma 70-300mm F4-5.6 APO DG Macro
13% Off / $38 Below Average

• $249 @ Amazon

Year's price range: $249 - $299
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Sigma 17-70mm F2.8-4 DC Macro HSM C
12% Off / $48 Below Average

• $342 @ Amazon
• $449 @ B&H Photo
• $449 @ Adorama

Year's price range: $342 - $449
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Sigma 18-35mm F1.8 DC HSM A
9% Off / $66 Below Average

• $699 @ B&H Photo
• $699 @ Adorama
• $799 @ Amazon

Year's price range: $699 - $799
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Rokinon 8mm F3.5 Fisheye CS
8% Off / $18 Below Average

• $200 @ B&H Photo
• $207 @ Amazon
• $299 @ Adorama

Year's price range: $179 - $259
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Samyang 50mm F1.4 AS IF UMC
7% Off / $25 Below Average

• $349 @ B&H Photo
• $399 @ Adorama
• $499 @ Amazon

Year's price range: $349 - $399
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Sigma 4.5mm F2.8 EX DC HSM Circular Fisheye
7% Off / $61 Below Average

• $799 @ Adorama
• $799 @ Amazon
• $899 @ B&H Photo

Year's price range: $799 - $899
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Lensbaby Velvet 85mm F1.8
6% Off / $30 Below Average

• $450 @ Amazon

Year's price range: $450 - $500
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645 Lenses

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FA 645 200mm F4
34% Off / $338 Below Average

• $664 @ Amazon
• $996 @ B&H Photo
• $996 @ Adorama

Year's price range: $654 - $1096
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[monochrome]

Yikes! $650 for a New 77 Ltd.

[stormtech]

The 100mm Macro is calling my name. I think I’ve bought and sold at least 3 over the years. But I promised myself I was not going down that rabbit hole again.....

[Biff]

Eesh, thinking hard on that 20-40. Been thinking about that lens for a while.

[bladerunner6]

I don't recall the 50 1.8 being this cheap.

The Sigma 17-70 is also really well priced.

[Biff]

Just placed the order. . .

[stormtech]

As usual my procrastination got to me. The 100mm macro is now $547 at Adorama instead of $397 as posted - same as B&H.

I kind of thought the price would be good for the week......

[rogerstg]

As usual my procrastination got to me. The 100mm macro is now $547 at Adorama instead of $397 as posted - same as B&H.

I kind of thought the price would be good for the week......

I can't predict the future, but that lens has been at that price a number of times in the last 6 months.