Hassle-free shopping with our 30-day return policy.
Hassle-free shopping with our 30-day return policy.
Trusted since 2012 — Greentoe is where smart shoppers save big!
Trusted since 2012 — Greentoe is where smart shoppers save big!
2835 offers placed in the last 24 hours.
2835 offers placed in the last 24 hours.
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Brand new & warranty-backed products from authorized retailers.
Name your price. Negotiate your deal. Save big on every purchase.
Name your price. Negotiate your deal. Save big on every purchase.
Hassle-free shopping with our 30-day return policy.
Hassle-free shopping with our 30-day return policy.
Trusted since 2012 — Greentoe is where smart shoppers save big!
Trusted since 2012 — Greentoe is where smart shoppers save big!
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Irix 11mm f/4 Blackstone Lens for Pentax K
Model: IL-11BS-PK
1/1
Irix 11mm f/4 Blackstone Lens for Pentax K
Model: IL-11BS-PK
Product Unavailable
We are sorry, at this time we are not accepting offers on this product.
- Pentax K-Mount/Full-Frame Format
- Aperture Range: f/4 to f/22
- Three Aspherical Elements
- Two ED and Four HR Elements
- Neutrino Coating
- Manual Focus Design with Focus Lock
- UV Fluorescent Engraved Markings
- Depth of Field and Focus Distance Scales
- Weather-Sealed Magnesium Alloy Housing
- IRIX 11mm f/4 Blackstone Lens for Pentax K
- Front Lens Cap
- Rear Cap for Pentax K-Mount Lenses
- Hard Lens Case (Black)
- Limited 5-Year Warranty
Authorized RetailersManufacturer warranty included
New Products OnlyWe never sell used merchandise
Free ShippingOn most items
30 Days Returns*Minimum return policy
As Seen On...
View Article“An E-Commerce Site Where You Can Haggle Down The Price”
View Article“Greentoe wants to make the buying process easier by letting you name the price you want to pay for an item, and then they'll find a bargain on your behalf...”
View Article“More Retailers See Haggling as a Price of Doing Business. ”
View Article“Name Your Price for Gadgets on New 'Priceline for Tech' Site”
View Article“Consumer Reporter Lynda Baquero shows a website where you can bid on the items you want, from the manufacturer of choice, and known within a day or two if your offer is accepted.”
View Article“I don’t say this often, but there’s a new app that just might dramatically change the way you shop, and it’s called Greentoe.”
View Article“An E-Commerce Site Where You Can Haggle Down The Price”
View Article“Greentoe wants to make the buying process easier by letting you name the price you want to pay for an item, and then they'll find a bargain on your behalf...”
What People Say...
KarenP193703804
5/5
Very pleased
"Easy to manuever & quick customer service response"View article
Reviewer116527698
5/5
Turntable Treasure
"Found a great Turntable at a Great Price…Easy check out! Would gladly do business with again. Plus free shipping!"View article
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5/5
Best price!
"Placing my order for a new Samsung 43” frame tv was quick and easy. Plus I saved $100!"View article
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5/5
Easy process and great price
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5/5
Superfast savincash
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Reviewer1947189363
5/5
Like ebay but better!
"Lots of retailers are willing to look at offers and give you the best prices!"View article
GreatDeal2026
5/5
Smokin Football Season
"Great deal on 98" TCL TV & JBL Sound System!"View article
Reviewer1847861951
5/5
OMG Green toe rocks
"I did not have the money to buy this TV at the retail price of $2700. Thank you for offering this service. Now i can watch TV after 6 months. My current TV burned out 6 months ago"View article
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5/5
Easy Peasy
"It took less than 5 minutes to find the product, create account, and make the payment. Easiest purchase ever and i saved $500!"View article
DealMaker1217344194
5/5
More like DealToe Now
"I’ve been shopping for a soundbar/ surround sound that I wanted and found it as a Greentoe Now offer. I had already made an offer that was countered at $962. Thought I’d take one more look and found this Greentoe Now deal and after tax came back at $878.****. Great deal!"View article
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Incredible Site & Service
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5/5
Best price, easy process.
"I randomly found this site when something for a new bulova watch I wanted, and it was the lowest price I had seen. The checkout was easy. I couldn't ask for better."View article
Scaminjs
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The only way to buy a TV
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Reviewer1661460878
5/5
Smoked
"Stumbled across this site, checked it out to see if it was legit, and Voilà I bit the bullet."View article
1ezbuyer
5/5
Great Prices and Great Experience
"I’ve purchased two TVs through Greentoe, and both experiences have been excellent. Best prices I could find anywhere, and both TVs were delivered right to my door without any issues.
My only mistake was forgetting that Greentoe offers a lot more than just TVs! I recently purchased applioances elsewhere and afterward realized I should have checked Greentoe first.
Greentoe will definitely be one of the first places I check before making a major purchase. Let's get the word out, and let the free market dictate prices. Craig Barton Scottsdale AZ"View article
Reviewer4137920598
5/5
Finally!
"Been wanting this TV for so long but it was always just slightly over my budget. Greentoe helped me get there!"View article
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5/5
Easy!
"Great price and easy to use. Will definitely buy from again. "View article
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5/5
ImchillinwithGreentoe
"I was looking me dream fridge and you guys had it at a price I could afford!!!!! Thanks SO much!"View article
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5/5
Best price, Brand New amd easy to oder
"Best price and very easy to order."View article
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5/5
Great deal!
"$800 cheaper than costco. Can’t believe it."View article
Reviewer3863939974
5/5
Leary at first, but...
"I had not used or heard about Greentoe. I checked their reputation online before ordering an expensive Christmas gift. I saved 34% from best in-person price at retailers. The item arrived when and as described. Happy customer. Will use again."View article
Reviewer325911081
5/5
Blowing the budget cause these deals are amazing
"Got a top tier sound bar and TV for the price I was going to get just the tv. Awesome Site!"View article
swperk
5/5
Great selection, great prices, fast shipping!
"I found just the TV I was looking for at the best price! Easy to make the purchase, and the TV is brand new with a full factory warranty. Shipping was lightning-fast and the TV shipping box was packed inside another box, so it arrived in perfect condition. Highly recommended!"View article
KarenP193703804
5/5
Very pleased
"Easy to manuever & quick customer service response"View article
Reviewer116527698
5/5
Turntable Treasure
"Found a great Turntable at a Great Price…Easy check out! Would gladly do business with again. Plus free shipping!"View article
Specifications
Physical
| Weight | 1.74 lb (790 g) |
|---|---|
| Filter Thread | Rear Gel: |
| Dimensions (DxL) | Approx. 4.65 x 4.06" (118 x 103 mm) |
Performance
| Format Compatibility | 35mm Film / Full-Frame Digital Sensor |
|---|---|
| Angle of View | 126° |
| Minimum Focus Distance | 10.83" (27.5 cm) |
| Focal Length | 11mm |
| Diaphragm Blades | 9, Rounded |
| Elements/Groups | 16/10 |
| Aperture | Maximum: f/4Minimum: f/22 |
| Camera Mount Type | Pentax K |
Features
| Autofocus | No |
|---|
Product Highlights
- Pentax K-Mount/Full-Frame Format
- Aperture Range: f/4 to f/22
- Three Aspherical Elements
- Two ED and Four HR Elements
- Neutrino Coating
- Manual Focus Design with Focus Lock
- UV Fluorescent Engraved Markings
- Depth of Field and Focus Distance Scales
- Weather-Sealed Magnesium Alloy Housing
- Rounded Nine-Blade Diaphragm
In The Box
- IRIX 11mm f/4 Blackstone Lens for Pentax K
- Front Lens Cap
- Rear Cap for Pentax K-Mount Lenses
- Hard Lens Case (Black)
- Limited 5-Year Warranty