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Toshiba FlashAir W-04 vs Eyefi Mobi Pro


Life has many existential questions and then some simple annoyances: why is the built-in WiFi in so many cameras so terrible? My Sony a6300 requires QR codes, wireless connections, and clunky built-in applications (as well has having the even more kludgy Sony PlayMemories application on the receiving device). Sometimes the simplest solution is not proprietary, and that is where we come to wireless SD (actually SDXC) cards.


Eyefi was a Finnish company that pioneered the idea of the wifi-enabled SD card. The idea was to make a small card that had a short-range 802.11 connection that could interface to a computer. Before long, the focus became transmitting to handheld devices.

In theory, all wireless cards count on the tolerance of a camera for staying powered up until disk operations are finished. In practical terms, this means that the wifi component in the card is activated by reading or writing a certain amount of data to the card, and the camera does not go to sleep until the transmission is complete (or some number of minutes passes, and the camera says “enough is enough!”).

Eyefi was not a tremendously easy system to set up on a handheld because it installs a WiFi profile (ID and password). This required you to enter a code on the back of the box into the handheld application, have your phone install the profile, go to WiFi settings, connect to the Eyefi card (assuming it is powered on) and then activate the Eyefi Mobi application.

From there, and assuming you were out in the wild, and your handheld could not see any other networks to which it could auto-connect, it would automatically connect to the Eyefi card. You would have to launch the Eyefi app to get transfers to start.

In general, the Eyefi setup worked (and works), except for a few caveats:

  • It is difficult to reconfigure the cards for a new device if you lose the activation code, and it is not straightforward to recover them (you used to have to email Eyefi customer service).
  • The configuration on the pro cards (transmit raw files and video or neither) required work with the hellishly ungainly Eyefi desktop application, which was a solution looking for a problem (if you are at your computer, why would you need to wirelessly transmit data to it?)
  • Eyefi cards were (and are) pretty hard on camera batteries.
  • Eyefi cards never got fast enough for intolerant cameras like Leica Digital Ms, especially the Typ 240 and its siblings, which really don’t like cards that can’t do at least 60mb/sec write speed (which generally means a 90mb/sec read speed – what they show on the box as the “speed”).

The Eyefi Mobi and Mobi Pro cards were a bit easier. The orange Mobi only transmits JPGs (you need to plug it into an SD reader to get RAW), and the black Mobi Pro would transmit both. But the speed still maxed out at Class 10, still not fast enough for a Leica, where sometimes they work, sometimes they don’t, and when they don’t, they lock up the camera until you remove the battery.

Eyefi’s reorg, Toshiba, and Keenai

The Eyefi situation, oddly, changed for the better with the reorganization of the company. The technology end (the patents) went to Toshiba. Keenai took over the software end and designed a (free) mobile application that far more reliably connected to the card and downloaded pictures far faster. While on paper, the deal between the companies was cross-licensing, the reality is that Eyefi cards are out of print.


Toshiba took over with its FlashAir series where Eyefi left off. True to Japanese corporate form, it put out its own clunky (and frankly indecipherable) handheld application. FlashAir. To its credit, the application allows you to see thumbnails (JPG and pink boxes for RAW) that allow you to selectively pull (as opposed to having the card push) files. This avoids the usual wait for the good shots while the card pushes all of your bloopers to your handheld.

The FlashAir W-04 (the current model, for some reason only available in Asia – in the U.S., you get the W-03 – but you can buy the W-04 all day on Ebay…) is in many ways better than the Eyefi Mobi Pro.

First, it skips the activation codes and profiles and lets you just punch in an 8-digit password (which you can change via the handheld app) when you connect to its wireless signal. I would not recommend changing this password because the risk of someone in your immediate proximity stealing your images is far smaller than the risk of forgetting the password and bricking the card.

Second, on Keenai, it is zero-configuration. It sees the phone is connected to a FlashAir card, and then it goes to town downloading everything (JPG and RAW). I think the assumption is that your phone will only be connected to one card at a time.

Third, the Toshiba cards seem to eat batteries less, although the effective range seems shorter. I am still testing this, but that kind of tradeoff would not at all be surprising.


Finally, the W-04 transfers about twice as fast as the Eyefi over WiFi, and its card write speed (UHS-3, which I measure at 63.3Mb/sec write speed) is high enough even to be reliable with the finicky Leica Ms. This actually makes them useful even when you don’t need WiFi connectivity. Speeds (as tested by me through the iMac 5K’s built-in card reader)

  • Flashair W-04 (64mb/sec write, 88mb/sec read)
  • Eyefi Mobi Pro 32 (17mb/sec write, 19 mb/sec read)
  • Eyefi Mobi 32 (18mb/sec write, 19mb/sec read)
  • For reference, a Samsung Pro non wireless card (rated 80/90) runs at 64/88.

…so as you can see, “Class 10” covers a lot of territory (basically 10mb/sec and up)

Unsolved problems

There are two last annoyances.

One is that iOS devices are hostile to the idea of strict priority lists for wireless. At home or work – where your handheld would be connected to a permanent network, you would want EyeFi or FlashAir cards to trump the local Wifi when they are active (since they are only active for shooting or file transfer). This is not a problem inherent to the cards themselves, but it makes using them less fun.

Second, wireless host programs like to store downloaded images in their own purgatory rather than dumping them all directly into your iOS photos storage. This means that you end up storing two copies of some (or all) pictures, eating into onboard storage. This actually is within the province of Keenai to fix.


With the maturation of wirelsss SD card card technology and of editing programs like Lightroom CC mobile, you can now actually get more done in more places. And yes, they even work with Sony cameras.




Tenba P415: a rereleased, slightly decontented classic


Front view

Note: this discussion starts with the P415 originally released in 1985 (and is based on an example purchased in 2003). The re-introduced P415  (released December 2013) has some changes as noted.

If we are going to discuss a camera bag, let’s at least talk about what makes a good camera bag in general:

  • It holds what you need to hold in a way that lets you pull out an individual item without disrupting (or dumping out) other items.
  • Its design does not make it hard to insert or remove items. For example, a bag whose opening is noticeably smaller than its “floor” makes it necessary to twist the item around to insert or remove it in the case.
  • It does not threaten contact between your equipment and metal zippers, hooks or snaps that might unnecessarily damage your camera.
  • It does not accelerate wear and tear on your equipment through contact with other items.

These considerations are why the Platonic form of a camera bag is a padded fabric box with padded dividers. a top flap that exposes all the contents to access, and a shoulder strap. The Domke F-803 is an excellent exemplar, and it is the direct competitor to the Tenba P-415 that is the subject of this article.

Styling. It is a bit ironic that this is described as a “briefcase,” except that it is what a P415 came to resemble given developments in other luggage. In 1985, men generally did not use shoulder-strap briefcases; they used handle briefcases. When this came out, it would have more resembled a tote bag or a carry-on overnight bag. Only in the mid-2000s did this come to look like a laptop computer bag or a shoulder-strap briefcase. Styling is extremely conservative; it’s just black ballistic nylon with black straps and black leather tags (to Tenba’s credit, they are simply embossed and not inscribed in bright colors). Lining is a smooth grey nylon fabric. Most zipper pulls are rubber-coated.

Carrying. This bag has two carry modes. It can be carried by a handle on the top (the top flap must be latched) or by a shoulder strap with a comfortable pad. If you want the strap to go away completely, you can zip it into the gusset used for expansion (so obviously, this is not an option when the bag is “expanded.” The original version of this bag could take optional backpack straps (these anchored at two rings in the lower rear corners of the bag and two under the handle). The backpack strap accessory and its connection points are now history. Although there is a near-universal tendency to label bags like this as “courier” or “messenger” bags, they are in fact shoulder bags. Real courier or messenger bags are more specifically designed to be stable on your back wile biking or hiking.

Main compartment. Tenba says this “holds a DSLR with a battery grip, an attached 70-200 f/2.8 lens, two additional lenses and a flash inside.” This really needs some revision and/or explanation. First, if you are using the supplied PI-13 insert (the bag has no bottom padding) and have not expanded the bag, this will barely fit a camera like a base D700/800 (no MB-D10) plus a long lens. The picture below is more indicative of the actual capacity; note that the shoe-mount flash is the entire width of the insert. In the default configuration, try to avoid thinking that this is a battleship DSLR bag – because it is not. The padded insert/dividers are not stiff enough to drop a DSLR in “nose down.” All of that said, this is a good fit for small DSLRs, mirrorless or rangefinder systems, and small medium-format cameras.

P415 open, showing actual capacity when not expanded.

P415 open, showing actual capacity when not expanded.

The main pocket has a nylon septum in the front and back that separate the padded insert from the padded sidewalls. Though originally designed for magazines or writing pads, these are actually the ideal places to stick a laptop (in “expanded mode” the bag can take a big-screen Dell e6420), netbook, or tablet.

Opening the expansion zipper allows the main compartment to expand a couple of inches front to back, and this also gives you a couple inches left and right of the padded insert. This is quite useful; you can stick a shaving kit and some clothes (or a brick of 120 film) in the extra left-to-right space.

The front organizer is accessible by undoing a wraparound zipper. This organizer varies between the two versions of the case (old and new). This picture is the new one:


Hump pockets: On both versions, there are two humps on the front section of the bag that are just padding; the humps have two side zippers that allow you to access two items the size of a Sekonic L-358 meter.

Key hook: On both versions, this a very handy feature when traveling.

Mesh pockets: Both versions have one mesh pocket on the front (flap) and back of the organizer. These were designed to hold 35mm film cans, but today they hold lens pens, Speck Grabbers, SD cards, small cords, etc. For scale, the mesh on the front part holds two Gepe waterproof SD card cases (6 cards total); the rear holds three (9 cards total).

Pen pockets: The old version has two, on the left as you look at the open organizer from the front. The new version has two on each side.

Padded internal pockets: this where the design changed significantly. On the original, between the front “hump” pockets (shown above with a red thing in one and a filter case in the other), there is a single pocket that holds 5 rolls of 120 film. On the new version, here are two smaller ones. On the rear side of the organizer, the old version had two equally-sized padded pockets (holding 7 rolls of 120 or an equivalent-sized object like a paperback book, Walkman… er, portable hard drive), one with a velcro flap over it. The new vesion omits the flap and includes more pen pockets. The flap is actually useful for restraining wound-up cords that want to un-wind.


This is the somewhat dodgy “tablet” pocket.

Tablet pocket: be very careful. The P415 has a full-width, zip pocket between the slot for a roll-on bag and the main bag. This pocket is not a great place to put tablets because it is (a) near the outside of the bag; (b) easy for others to get into; and (c) vulnerable to impact from the handle of your roll-on bag. The old version of the P415 also had a zipper pocket inside the zipper pocket – and that metal zipper pull would scratch the hell out of a tablet. Leave this one to magazines/boarding passes and stick your tablet in the internal area discussed above.

Attachment point for roll-on bags: one useful thing about this bag is that you can slip it over the extended handle of your roll-on bag. The bad news is that when the P415 is loaded, the 2″ of webbing for the attachment, even with the snap closed, is not always enough to prevent the bag from swinging backward. More modern bags have a handle attachment point that runs most (if not all) if the height of the bag, providing more stability.

Strengths in use: Usually, a camera bag is something else trying to be a camera bag. The P415, by contrast, is a camera bag that is capable of serving other purposes, such as being an overnight bag.  Extended, it can take a shaving kit and extra clothes, in addition to a decent amount of photo gear. My P415 has done yeoman’s duty in Europe, Africa, Asia and South America. The zippers and connectors are well thought-out and quiet. The only velcro on the modern version is in the umbrella loop, top handle (why does this separate at all?) and the interal dividers. The original has only one additional velcro point, the covered organizer pocket. The fabric has proven to be almost indestructible (as “ballistic nylon”probably should be), and the foam has now held up for more than a decade. The leather parts are a little dry, but none of them have any relationship to the function of the bag. The design in general has aged well. Although it was designed in an era where laptops did not exist, where cameras were big, and imaging was limited by how much film you could carry, the spaces in the bag are still usable for modern photo appliances.

Weaknesses in use: The P415 has the typical vices of the open-top shoulder bag and exactly the same ones as the Domke F-803: there is an open space between the top of the bag and the flap over it. This allows faster access to equipment without dragging painted objects over zippers – but it also allows small objects to fall out if you are not careful. That this is in any way water repellent would be an overstatement. The nylon will repel rain for a short time, but within about 20 minutes, water will start making its way into the top cover. It will be quite a while before that moisture gets to your equipment, though. It is still a lot more effective than any form of canvas. The multiplicity of pockets can also get you; I thought I had lost a NEX-5 charger and battery in New York; it surfaced in one of the crevices of the bag right after the return period for the replacement was up… Finally, the only thing to have failed, long-term, is the pull on the zipper that operates the expansion figure. It’s not expensive to repair, but the YKK zipper pull was easily bent.

Upshot: the P415 is a good counterpoint to Domke hair-shirters and the over-designed, under-functional flavor of the week from San Francisco. In its way, it is minimally designed (no flaccid water bottle nets, no stripes, no modular attachment points) and maximally functional, without presenting many pickpocketing opportunities (or enticements). There are a lot worse ways to spend the $169 MSRP on a bag. I can think of few better ones.