Sony GPS-CS3KA: we’re all seekers
Sometimes you see a photo accessory and wonder, “where the hell were you all this time?” And the answer is, “it was too easy, so Sony canned it.” The GPS-CS3KA (“GPSman?”) is a smallish box, maybe two-thirds the size of a Metz 26AF flash. It only really does two things: (1) keeping a track log from GPS signals it receives and (2) writing them to the JPGs on your SD card.
A reasonable solution to a stupidly common problem?
Wait? What? Most GPS solutions for cameras have been pretty terrible. For reasons that are unclear (perhaps metal covers), high-end cameras have not had built-in GPS. In fact, few cameras period have it – aside from the ubiquitous iPhone or Android. This leaves you with some suboptimal options:
- Keep a tracklog with a separate device (GPS watch, tracklogger, battery-intensive phone app) and marry the coordinates to the files in Lightroom or Exiftool.
- Use a separate device with Bluetooth to feed coordinates into your camera’s remote port (a la Red Hen).
- Use a clunky GPS add-on that takes up both your remote terminal and hot shoe (looking at you, Canon and Nikon).
- Try to graft an NMEA cable to your DSLR’s accessory port.
- Use a clunky grip with GPS built-in (Leica Multifunction Grip M)
- Stick a GPS in some other accessory, like an EVF that you might otherwise not user (Leica EVF-3).
Sony quite possibly solved this problem by accident with the GPS-CS3KA, which takes a reading every 15 seconds into 128mb of memory – and when you insert an SD card will look for the closest matches and tag your JPGs in batches of 60. I say “by accident” because operation is far to simple for a Sony (at least compared to a Bravia TV). There are only three options:
- GPS: display GPS screen – hitting enter gives you different permutations of time and GPS coordinates.
- Match: automatically counts the number of files to be tagged and only lets you start or cancel. Matching stops the GPS reception.
- Tools: set the time zone, undo-ability, and erase internal memory.
How does it work?
- Stick a single AA battery in one slot.
- Set your correct GPS plus or minus time zone (as I write this, -400 for Eastern).
- Turn on the machine.
- Shoot a bunch of pictures.
- Put your SD card in the slot.
- Use the “matching” function to assign locations (use “undo” to clear all of the data you just wrote).
- Repeat as many times as necessary in batches of 60 files.
Note that when you initiate a card matching session, you may lose the GPS signal – but then again, you won’t be shooting pictures while your card is in the device.
GPS performance is actually quite good. Cold start will grab coordinates within about a minute; on a warm start, about 10 seconds. Your initial startup will be minutes as the device updates its GPS satellites. The device apparently can read a signal in many indoor settings, which is neat. Or scary.
My performance tests on accuracy landed this within about 15 feet of where I was standing. It does read out in minutes and seconds too. For most purposes, it suffices to see degrees to know that it’s locked on.
Observed battery life with alkaline was about 12 hours. Not terrible, considering how much power this probably draws.
I did not test the Sony software, but I did note that connecting the USB cable does not bring this up as a drive with an easy-to-access GPX log.
Where does it work and not work?
I tried this a Sony A7rii and with cards up to 64gb. The results were better than expected for a device this old.
Cards that work: up to 32gb only, the faster the card, the better (realistically, that’s a Sandisk 95mb/sec card).
To be safe, I would recommend using SDFormat and not opening cards with files on a Mac before encoding. Macs tend to throw indexing files on disks that are invisible to the user but can hang up particularly primitive embedded devices (of which you should assume this is one).
Cards that don’t: 64gb and up; WiFi-enabled cards. I suspect that 64gb is outside of the ability of the device to read cards (even devices that read FAT32 sometimes cannot address an entire card). You get “matching error” as your only clue. As to WiFi, my best guess is that since it works for a couple of frames and then blanks, that the card sees that x files have been read and that it’s time to turn on the WiFi. The problem is that one AA battery doesn’t have enough power to allow that. In my testing, there has been no way to shut off the FlashAir’s desire to start transmitting (unlike EyeFi, which could be set to transmit only images that were write-protected).
Files that get encoded: the spot of bad news is that the current ARW raw format doesn’t get location data with the Sony GPS. But since the device will record location data onto almost any JPG, it will work equally well (or poorly) with many types of cameras.
Within the limits of a certain card size, and therefore speed, the Sony GPS does allow a relatively automated geotagging process for JPGs. Like Lex Luthor’s henchmen, it has “one job.” But unlike those people who never succeded at killing Superman, the Sony performs that job well.
Notably, you can generate tracking data usable with multiple cameras, since you can insert SD card after SD card and use the same body of GPS data to code files shot in the same time period. This is a bit more flexible than solutions that would have to be transferred from camera to camera (or just duplicated with good old cash). It does require than your cameras’ clocks be synchronized reasonably closely.
It does not solve the problem of writing geolocation data to RAW files (Lightroom, for example, simply ignores this data if you import both tthe RAW and the JPG), and no one will likely ever solve the mystery of why cameras don’t have inbuilt GPS. But it’s a lot better than trying to marry track logs and files by manual labor.
Sony a6300 and Techart LM-EA7 II
Sony a6300 with Leica 35/1.4 Summilux-M ASPH and LM-EA7 II
Sony a6300: love to hate you
There may not be any point, six months after the fact, to writing anything about the Sony a6300 compact camera. Well, maybe there is. Sony APS-C cameras are something that Fuji fans love to hate. And what’s not to hate from their perspective? Sony doesn’t make cameras that look like old rangefinders or SLRs, Sony lords it over Fuji with sensors that are slightly ahead (Fujifilm buys sensors from Sony, so it is not going to get the pathbreaking product immediately), Sony lenses are supposed to be terrible, and despite all this, Sony still outsells Fuji by an order of magnitude. How could this be?
— Sony strengths relative to Fuji in the mirrorless arena
The two possible answers are video and AF performance. Video on the a6300 is nothing short of phenomenal: 4K, 120fps HD, and just about every type of video gamma geekery that you could want. The Multi-Interface Shoe allows for some interesting snap-on microphone options, including XLR and wireless. The worst thing anyone has said about the a6300’s video is that it has rolling shutter problems, and the answer to that is really, so what? It’s an artifact of any mirrorless camera when used for video. And since Fuji sources its sensors from Sony, you’re not going to do any better. In fact, no one outside the Fujisphere considers Fuji’s video in any way significant.
The focusing speed and accuracy a NEX/Alpha has always been somewhat incredible. Even back to the old NEX-5, Sony could make lenses that silently and smoothly achieve focus on faces. The a6300 with its kit lens posts some insanely fast times, and Sony’s claims about continuous focus tracking are largely true, at least as far as this author has been able to reproduce the right photographic, ahem, “needs.” In fast action, a camera with poor lenses but a responsive system does much better than a more ponderous camera/lens combination that misses the forest for the trees.
One thing that is clear from the dpreview.com tests is that with whatever mystery lenses the site used to test the X-Pro2 and A6300,* there is almost zero difference in image quality, anywhere on the frame.
*Never disclosing the lenses used is dpreview’s second-biggest failing. The first is retconning itself into the time before the internet and digital cameras existed. Sorry. That was a mistake. The first is allowing itself to be bought by Amazon. Then the second is retconning. Then the third is mystery lenses (apologies to Steve Martin).
The A6300 is fairly easy to handle. The grip section of the camera is substantial, and in general, it is easy to operate. No one, though, understands what the second command dial is doing on the top deck. It’s not comfortable to use with the camera at your eye. Controls are snappy and solid, as is the general build.
The A6300 has the latest OLED high-density electronic viewfinder that features a 2-axis level (pitch and roll) and more information display possibilities than you want to admit you want. Battery life is helpfully provided by percentage (and if there is one nice thing about Sony batteries, they are good communicators. Shooting does not black out in continuous mode. The EVF senses heat (infrared radiation); hence, its eye sensor does not react to glass-lensed glasses or sunglasses. If you don’t like the EVF, there is a big LCD on the back. Knock yourself out.
This is mostly unchanged since the a6000. The big thing is silent shooting, which uses a front and back electronic curtain (you can also choose electronic front or mechanical front). Silent shooting has two failure modes: first, in any situation with fast-moving objects, the progressive read of the sensor will cause typical “rolling shutter” artifacts. Second, dimmed LED lights (dimmed at the wall switch) flicker, even at full brightness, and can cause light banding in the finished frame (rolling shadow).
— Legacy lenses
One big note is that it is not particularly easy to engage viewfinder magnification on a shot-to-shot basis. You either have to learn to live with focus peaking or slow way down if you want to focus older SLR lenses, for example.
— Accessories and cutting corners
If you are accustomed to older NEX cameras, you will marvel at how Sony expects you to charge this camera with a USB connection to something else. The better solution is the Sony BC-TRW, which is a microscopic dual-voltage charger. It actually has four charging indicators (1-3 and off – meaning “fully charged.”). But yes, you still get a useless camera strap in the box.
An exit from the closed system
The problem with APS-C camera systems, whether Sony or Fuji makes them, is that they are closed, highly proprietary systems. You can’t stick a Fujinon on a Sony; you can’t get a Sony Zeiss lens onto an X-Pro2. Change systems? Get ready to pay the price when you sell your old system’s lenses.
There are two tired retorts:
- But the system has all the lenses you’ll ever need.
- Why don’t you just mount legacy lenses on an adapter?
The first argument is disposed of easily: what if you don’t like the one lens with your preferred angle of view and preferred maximum aperture? What if you don’t want to shell out for new lenses? What if you need the money for booze?
The second fails due to the kludge factor. Yes, it’s possible to mount other lenses on these bodies for use with cheap Chinese adapters and your old lenses. It’s also generally miserable. Both Fuji and Sony allow focus magnification, but Sony makes it difficult to use when a non-Sony lens is mounted. Both makes have focus peaking, but that’s not as definitive as you think. And although Fuji offers a phase-detect driven split-image manual focusing function, it’s not that much fun and not that fast to use.
The “out” provided by Sony was to enable phase-detect autofocus with third-party lenses. This enabled things like the TechArt LM-EA7 II adapter, which in theory allows the autofocusing of any M mount lens (or lens that can be adapted to M, provided it physically fits the adapter). If this works, it would be a game-changer, since it would bypass the usual foibles of adapted lenses (focus difficulty and inaccuracy of focus peaking being two big ones). Is this true?
The good, the bad, and the ugly with the LM-EA7 II
The adapter comes in a nice, foam-padded box and includes a NEX/E-mount body cap and rear lens cap. This is a nice touch, since people who bought the a6300 with a kit lens will have neither.
The good news is that with the sweet spot for Leica lenses: 35-50, the LM-EA7 works like a charm. The noise is a faint whirring, and the Sony phase-detect system fairly effortlessly computes and reaches the focus point (provided, of course, that your lens would ordinarily need 4.5mm or less of travel between infinity and minimum focusing distance).
- Focusing is through the lens, at shooting aperture. ***This forces the camera to automatically adjust for focus shift on fast lenses, again making the a6300 more accurate and repeatable than a Leica M body, which can only have accurate focus at one aperture.
- The camera plus adapter can focus on an off-center subject using (for example) wide AF. Face recognition works with this adapter, even though the adapter supports phase-detect only. ***This is significant because it means that the a6300 can more accurately focus fast Leica lenses on off-center subjects than a Leica body can.
- The camera plus adapter rarely misses, even off-center. In fact, the focus with things like the 50/1.5 ZM Sonnar (the modern version) is better than can be achieved with a rangefinder (naturally, due to focus shift).
- The adapter is serviceable with 75mm and longer lenses, provided that you pre-focus to somewhere at least near the expected focus point.
- The adapter, by virtue of its inbuilt extension, gives you slightly closer close focus with 35mm and shorter lenses.
- There is little or no color shift with adapted wides. Depends on the lens, but even the ZM Biogon 4.5 seemed to do ok.
- Flash works with the adapted lenses.
- The multi-shot vibration-reduction mode works (JPG only).
- The weight limit for the objective assembly (lens plus any adapters to M mount) is 750g. This is well beyond what you need for almost any Leica-mount lens and covers most DSLR prime lenses (if you go lens – to M adapter – to LM EA7 – to camera.
- The artistic effects, such as “Sad Clown with Single Tear Airbrushed onto Sweatshirt” still work with adapted lenses.
Now, what’s the catch? Well, there are seven.
- PDAF does not work for video, and the adapter does not do contrast-detect.
- Due to some clear limits in the Sony PDAF software (which is probably set up to look for big focusing changes), wide lenses (≤21mm) and lenses with maximum apertures of f/4 or smaller do not focus well. Granted, why do you need AF with these lenses?
- The motor part of the adapter hangs below the camera, making it hard to set the camera down. This is not entirely negative because it also makes a nice grip.
- Not all SLR mount to M mount adapters work. In general, you have to use the Leicaist versions because they taper enough to miss the motor unit. Konica AR is one of the couple that work with the adapter, and even then, it’s just the typical Chinese adapter with a relief milled into it to clear the autofocus adapter.
- Taking the camera’s aperture setting off f/2 or 2/8 tends to cause overexposure.
- The system for selecting and recording lens-specific metadata is confusing, pointless, and possibly both. Your best word may be to record everything as 15mm.
- It does take a toll on your battery.
Tips and tricks
- Disengaging AF. For some reason, there is a lot of internet kvetching about how it is difficult to disengage AF. This is probably based on old firmware that requires you to use Aperture Priority and turn to a small f/stop. It is actually very easy to disengage the AF temporarily. If you press and hold AE/AF-L on the a6300, the adapter will park at its “infinity” setting, the focus peaking will come on, and you can then focus manually. When you let go of the AE/AF-L button, the adapter goes back to normal AF operation (make sure the lens is set to infinity before you do this!).
- Quickly overriding face-detect or wide area AF. If you have the camera set to wide AF, and you press the center of the back wheel, it will go into spot AF, center area only. It will also automatically focus in that zone. There are many possible green boxes, so it’s not like spot AF – but it suffices in most situations where you need an arbitrary focus point.
- Minimum focusing distance. With a travel of 4.5mm, and the lens set to infinity, the adapter does not have extension enough to reach minimum focusing distance with any lens over 50mm. The slight exception appears to be some zooms, since their designs often obviate a direct relationship between focal length and extension while focusing. Minimum focusing distance, though, is all in your mind with the A6300, whose narrower angle of view causes you to back up to get the same field as with an FX/35mm camera.
- Prefocusing longer lenses. With long lenses the quickest and easiest way to get to a range where you can achieve focus is to press AE/AF-L (which parks the lens), turn focus peaking on, and focus to a point where focus is just behind the intended subject. Once you are there, let go of the AE/AF-L button to reactivate AF. Because you focused behind the subject, and because the adapter extends (thereby moving the focus point closer to the camera), you have now put your lens exactly in the right place. Needless to say, the longer the lens, the less frontward subject movement this technique will tolerate.
- Marking your close-focus point with long lenses. If you habitually shoot at 1-1.5m, find the right “parked” focus distance (see above) and then mark it on the focusing ring with a dot of colored paint.
Yes. In general the performance of this adapter depends on two major variables: lens weight and maximum aperture. The former degrades focusing speed; the latter, certainty of locked focus. As noted above, Hexanons were tested due to the availability of an ulterior SLR adapter (plus I had a bunch sitting around).
- 35mm f/1.4 Summilux-ASPH M (pre FLE)
- 40mm f/2 M-Rokkor
- 50mm f/1.1 MS-Sonnetar
- 50mm f/1.5 ZM C-Sonnar
- 50mm f/1.5 Jena Sonnar (prewar)
- 50mm f/2.0 M-Hexanon
- 50mm f/2.4L Hexanon
- 50mm f/2.8 Jena Sonnar (with Amedeo dual-mount Contact to Leica adapter)
- 50mm f/2 Jena Sonnar collapsible prewar
- 50mm f/2 Carl Zeiss (Opton) Sonnar, postwar
- 75mm f/1.4 Summilux-M (prefocus)
- 90mm f/2.8 M-Hexanon (prefocus)
- 10.5cm f/2.5 PC Nikkor (LTM)
- 40mm f/2 Hexanon (AR) (Konica mount via Leicaist adapter)
- 57mm f/1.2 Hexanon AR
- 35-70mm f/3.5-4.5 Zoom-Hexanon AR
- 85mm f/1.8 Hexanon AR
Kinda. For wide-angle, medium aperture lenses the adapter does not do so well because Sony’s phase-detect AF isn’t set up to split hairs.
- 24mm f/2.8 Hexanon AR
No? Here, the details are too small and/or the depth of field too much to get an easy lock (or sometimes, any lock) with the A6300 [edit note: this appears to be due to the camera’s having difficulty in deciding where the focus point should be – and even in its “spot” modes, the a6300 is picking a focus point]. The behavior on these is more deliberate focusing, almost as if the camera had switched into contrast-detect].
- 18mm f/4 ZM Distagon [too wide, too small an aperture]
- 21mm f/4.5 ZM Biogon [too wide, too small an aperture]
- 21-35mm f/3.4-4.0 M-Hexanon Dual [too wide, too small an aperture]
- 50mm f/1.5 Carl Zeiss (Opton) Sonnar [aberrations that Sony AF can’t understand?]
The Sony A6300 is a pretty formidable camera for video and not a slouch for stills provided either that your style does not exact ultra high performance from kit lenses or provided that you are willing to invest in better Sony or Sony/Zeiss glass.
The LM-EA7II may never be good for sports or high-intensity moving work, but it provides some fun with old lenses, or as much of it as you can take! It’s actually a bit irritating that I did not have an A7-series camera on hand to try it.