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Cowboystudio O-Ring Flash Adapter for Canon 550EX 580EX/580EX II with Canon 1DS / 1D / 1V - Model F175

3.0 out of 5 stars 30 customer reviews
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Price: $32.56 & FREE Shipping on orders over $49. Details
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F175
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  • Easy to use
  • No electronics, no flash tubes
3 new from $32.46 1 used from $28.49
$32.56 & FREE Shipping on orders over $49. Details Only 2 left in stock (more on the way). Ships from and sold by Amazon.com.

Technical Details


Product Description

Style: F175

The O Ring flash Adapter creates a very special lighting effect, there are no electronics, no flash tubes and no cumbersome cables! It uses a clever system of internal prisms, reflectors and light-shapes to distribute the light emitted from the flash unit.

Model: F175, is suitable for:
CANON 550EX 580EX/580EX II + 1DS / 1D / 1V
NIKON SB900 + NIKON D700 / D300 / D3X / D2X

Product Information

Style:F175
Product Dimensions 15.8 x 15.8 x 15.8 inches
Item Weight 2.2 pounds
Shipping Weight 1.4 pounds (View shipping rates and policies)
ASIN B0032CJUFY
Item model number F175
Customer Reviews
3.0 out of 5 stars 30 customer reviews

3.0 out of 5 stars
Best Sellers Rank #8,614 in Camera & Photo > Camera & Photo Accessories > Bags & Cases > Camera Cases
Date first available at Amazon.com December 29, 2009

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Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Style Name: F175 Verified Purchase
I picked one of these up after seeing it elsewhere for twice the price, and it was worth every penny. My clients are incredibly impressed by it (despite it being a cheap adapter), and it really provides a nice even amount of light for close-up portraits when you don't have a better option for bounce. It's light, and I worry it's going to crack one of these days... but it was really inexpensive and fits perfectly over my 580ex II. I highly recommend it to anyone who wants to get more use out of their external flash unit!
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Style Name: F155 Verified Purchase
So far this item works great. I have been testing it out in various closeup situations and it does exactly what the advertisements say. I had heard it might be necessary to take it apart and add some silver mylar to get better output. When I opened it up the manufacturer had obviously heard the same as the modification was allready incorporated it in their shipping product..... Works great.
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Style Name: F165 Verified Purchase
...at this price it works perfectly for forensic / technical photography. Fit very well on my 60D with the 430 EX mounted. The ring is large enough to fit over my Sigma 17-70 F2.8-4, even when the hood is mounted. It's kind of hard to tell, because the light is changed so much, but my impression is that it costs about one full stop of light to use it. I also trimmed the lower part of the rubber around the strobe for a better fit, as another reviewer suggested.
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By Jo Beaux on April 3, 2014
Style Name: F165 Verified Purchase
I really like this, but I need to make a stabilizer for it. I feel that it being on my flash and then being held on to my camera with only a hot shoe isn't very safe for camera and flash. When I take photos with it, I generally hold it to make sure I don't accidentally slam it in to something.
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Style Name: F165 Verified Purchase
I was somewhat disappointed with the Macro O Ring Flash adapter when it first arrived. It's too heavy for the type of mount provided and can easily slip off when pointing your camera downward. It's very awkward to mount and to carry mounted. And although it has fallen off often, it is durable.

In order to keep the O Ring from falling off the flash all the time, I modified my flash a little by adhering two 49¢ rubber washers with thin 3M Scotch Brand Double-Sided Tape (Cat 136). Great tape to have around and is photo safe. As shown in the photo, I attached the rubber washers to the top and bottom of my flash. The O Ring has four feet that mount on the outside of your flash and a velcro strap that wraps around them. The top and bottom are rubber while the side ones are plastic. The rubber feet don't quite hold onto the plastic of my flash, but by adding the rubber washers, it's now rubber on rubber and seems to do a much better job. Without this modification, I cannot see how the O Ring is even usable. And it still falls off sometimes. I was thinking of using velcro on the side feet for better adherance.

The photographs I've captured are beautiful, which would seem that the O Ring is performing its job sufficiently. Here's a close-up of a red milkweed beetle I shot using my Tamron 60mm Macro lens on my Canon T4i. As you can tell it's very evenly lit. There is something that concerns me and that is when I shine a flashlight into the flash opening, the light doesn't appear to be evenly dispersed around the ring; it's brighter near the top. But, the photographs don't bare this out.

Let me make this clear: it is an adapter and requires an external flash. It's important to get the right model for your camera/flash.
Read more ›
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Style Name: F155 Verified Purchase
For the price this is a great ring flash. It does lose two stops of light, which I read before buying. However, attaching to the canon 430ex ii I can bump up the compensation and it works fine. I did have to modify it just a little bit on the rubber where it connects to the flash. The bottom piece was too big and was stopping the flash from being level. But after slicing off about a quarter inch with a exact o blade it fits fine and works well. The build is a little cheap, but come on, it's $36. It if does break its cheap enough to get another one. The price is the main reason for the five stars. But it seems like it should last if you are careful with it. As a side note, the shipping speed from Cowboystudio is great, it actually got here a day before it said. I do plan to buy some more of my studio equipment from them.

Edit: I have had this quite a while now. It still works great, though if you plan to use it for any kind of portrait work it does loose about two stops of light, up close it doesnt loose any.
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Style Name: F155
- It is a cheap piece of plastic - seriously looked like someone printed the logo on a inkjet printer at home
- Extremely heavy, bulky, not easy to carry, I feel like the velcro isn't going to keep it on for long
- Extreme loss of light due to light leaks
- Shipping is expensive. If the product itself was truly $35 without the tack-on shipping (I believe it was an extra $15) it might have been worth buying it just for fun.
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Style Name: F160 Verified Purchase
It's cheaply made, but the price was low. I have difficulty getting it to stay on the camera. No matter how tight the Velcro fasteners seem to be it needs to be pushed back frequently. All that said, it works at a price that will fit in any photographers budget who wants to learn how to use modern lighting techniques.
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