CDA Compact Flash CF Type 2 Thick Card Adapter for SD cards. NOT for Devices with CF Type 1 Thin Sockets

I purchased this Eyefi in combination with Eyefi Mobi 8GB SDHC Class 10 Wi-Fi Memory Card with 90-day Eyefi Cloud Service, Frustration Free Packaging (MOBI-8-FF) to use in my old Nikkon D100. I recently reviewed this card, and I copy the review here since it might be useful. If you do not have time to read a long, useless post and just want to know hot to make it work, skip directly to the summary.--------------I found the Compact Flash Adapter and Eye-fi while looking for a solution to transfer my ancient Nikkon D100 (Compact Flash) pictures to my smartphone during trips. At the end, what is the point to taking these awesome pictures if I cannot brag about them real-time in Facebook? I was not sure if it would work, but I decided to take a leap of faith and I purchased both Eye-fi and adapter. Did it work? If you are patient enough to read this review you might get an answer (or you can just skip to the summary at the bottom).For those that are not familiar, the Eyefi is an SD card that transmits the pictures from your camera to your phone by using Wi-fi (not your home wifi, but a Wi-fi generated by the Eyefi SD card itself). Your phone will connect to that SD card Wi-fi and copy the pictures. Now you can view them in your phone and email them, post them, etc. In theory, every time you take a picture the Eyefi will transparently setup the Wi-fi and transfer it to the phone, or so I understood.Of course, at first it did not work. Every time I took a picture, nothing happened in the phone. If I took many pictures in a row, I could see the phone connecting to the Wi-fi for a few seconds, just to lose the connection. It was only after a while that I realized - the power for the Wi-fi has to come from somewhere! Everytime the Nikkon takes a picture, it powers the Eyefi for a few seconds, but then turns it off. There is a green light that shows you when the card is being powered. I am so smart! (Although if I had been smarter, I would have just read the first review in Amazon, which explains this).Disappointed and angry, I took my hammer to crush the card, but then I had an idea. I tried to take multiple pictures and then, swift as lightning, entered the D100 menu and set it up in slideshow. And voila! All my pictures were transferred to the phone. Why? Because the slideshow has to READ from the card, and that powers it. If the interval at which the slides show is short enough, you can manage not to lose the Wifi.I now go to trips and safely take pictures with my camera. Whenever I have a break, I just leave it next to my smartphone and put it in slideshow, and then check the pictures a while later. Yeah, the range of the Wi-fi is really short, but that just gives some time for my Nikkon and my Samsung to socialize for a while.Summary: You can get the Eye-fi to work with the Nikkon D100 following these steps:1. Set up the Nikkon camera slideshow to an interval of 2 seconds2. Place your smartphone next to the Nikkon with Eye-fi setup (I normally select the "Import" option at this time)3. Take a picture with the Nikkon. This will startup the Wifi.4. IMMEDIATLY, hit Menu in the Nikkon and select the slide show.5. Place the camera next to the phone and let the slideshow run. If it finishes, restart the slideshow (or if you missed that and the wifi has shut down, take a new picture and put the slide show again)6. After a while, all the pictures will be available in your Eyefi folder in the smartphoneI hope this helps!

I shoot a 5D Mk II with no immediate plans to upgrade. I use it for both still and video work, and have been pretty happy with my pair of 64GB Lexar CF cards. But honestly, this camera is the only device I still have that uses CF instead of SD cards. I searched for an adapter that would allow me to use SD cards in the CF slot and found this one with pretty good reviews.Most of the negative reviews I saw were about how Eye-Fi or other wireless transfer type stuff didn't work. I don't care about wireless transfer at all, so I haven't even tried that feature.A couple of reviews mentioned that it was too thick to fit into their CF card slot. As long as you know whether your card slot is CF type I or type II, you should be ready to make an informed decision on whether this adapter will work for you. I will say in my 5D Mk II, it is only slightly more tight than my regular CF cards, and I have had no issues whatsoever with getting it in and out, let alone bent pins or anything like that.Data transfer seems to be as fast as I would expect from the SD cards I'm using. It does appear that the Class 10 SD cards I use are the limiting factor for speed, not the adapter. It will keep up with 1080p30 video capture on my 5D Mk II, at least for the duration of the shots I take, which are rarely more than a few minutes long. I suspect the buffer for video or shooting burst RAW photos would be smaller with this than an actual high speed CF card, but again, that's a limitation of SD cards, not necessarily this adapter.I'm thrilled with the purchase, and I love that I can now travel without a CF card reader, since my laptop has a built-in SD card slot.

I have a Nikon D300 and often shoot a lot of images or shoot combined jpeg and RAW and wanted to use something larger then my two 8GB CF cards. Since I own a few 16GB SDHC cards that I use between a smaller P/S camera and a SD/SDHC HD camcorder, I decided to give this adapter a try to avoid buying larger CF cards that can only be used on my Nikon D300. The adapter is well made and solid. Goes in and fits perfectly in my Nikon D300 card slot (ejects easily too). I see no degradation in performance and and fact I do see an obvious gain in writing speed, since my SDHC cards outperform my older CF cards which I've had quite a while and are of the older/slower generation of CF card. The transition to using the SD adapter with my newer SDHC cards was seamless and other then one extra step of having to remove the SD/SDHC card from the adapter to read it if you do not have a card reader capable of handling CF cards too, this adapter does the job perfectly. I in fact am considering buying a second adapter of the very same model as this one to avoid changing SD cards out in the field and to save a bit of time. Bottom line, this works like it should and I highly recommend it at only about $15. Seems SD cards have become the predominant card type for most devices now (even newer Nikons similar to mine now take an SD rather then a CF card) and as SD prices go down, this adapter is the way to go for your CF card camera. Time will tell how this adapter will hold up inside under continuous use of putting in and taking out an SD card. I do have a card reader that accepts all of the card types, so, maybe that will be the way to go (read from the adapter directly rather then remove the SD card) to save a little wear and tear over time.