Details: This model of the Vivitar 840AF flash is dedicated to Pentax AF SLR cameras. It has a vertical bounce, which gives your images softer, more professional lighting. The 840AF automatically changes its illumination angle to match the focal length of the lens you are using, while the Auto Thyristor circuitry gives the flash a faster recycling time and more flashes per set of batteries.
Brand: Vivitar
If a deal seems too good to be true, it probably is.
Products which are imported and sold other than by Authorized Dealers are referred to as "Gray Market" (or "parallel") products. Camera Wholesalers will never sell you illegitimate products.
Camera Wholesalers are authorized retailer for:
- Canon http://downloads.canon.com/dealer/canon-ad-06-04-20.pdf
- Nikon https://cdn-6.nikon-cdn.com/where-to-buy/nikon_img_auth_dealers.pdf
- Sony https://www.sony.com/retailers
- Leica https://us.leica-camera.com/Stores-Dealers/Leica-dealer-locator
- Fujifilm https://stagewww.fujifilmusa.com/shared/bin/AUTHORIZED_DEALER_LIST.pdf
- Olympus https://www.olympusamerica.com/cpg_section/AuthorizedDealers.pdf
- Tamron https://www2.tamron-usa.com/dealers.aspx?alpha=C
- Sigma https://www.sigmaphoto.com/where-to-buy-sigma
- Manfrotto https://www.manfrotto.com/us-en/find-a-store/
- GoPro https://gopro.com/en/us/store-locator
- And many more
Why are Gray Market products risky?
No branded Warranty
- Gray Market products may contain a limited warranty from the seller, but they are not covered by a Canon/Nikon etc. USA warranty.
Not eligible for repair service
- Not eligible for USA repair service by the relevant brand, even if you want to pay for it.
Non-genuine accessories
- May include counterfeit or third party accessories that could damage your equipment.
Missing user manuals
- User manuals are often missing, incomplete or photocopied, and they may even be in a foreign language.
Fake software
- The software included often is either copied or counterfeit.
May not be as expected
- Since Gray Market products were not designed for sale in the USA, they may not meet your expectations.
Wrong power cord
- May include an incorrect power cord or adapter not designated for use in the USA.
Not eligible for rebates
- Gray Market products are not eligible for USA promotions or instant rebates from the relevant brand.
Learn more on Nikon https://www.nikonusa.com/en/nikon-store/gray-market.page
Or Canon https://www.usa.canon.com/internet/portal/us/home/products/groups/gray-market
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