MonsterAdapter LA-KE1 evaluate: Get Eye AF along with your Pentax lenses on Sony E-mount!: Digital Pictures Evaluate


With Ricoh’s Pentax model now firmly and irrevocably dedicated to DSLR cameras, Pentaxians who would like to shoot with a mirrorless physique have been left with no selection however to think about the transfer to a different model.

That is a troublesome and painful choice to make, although, as a result of it sometimes accompanies one other, no much less gut-wrenching selection: both you ditch all your present beloved lenses otherwise you proceed to make use of them through a dumb adapter. Do the latter and within the course of you will lose autofocus functionality and presumably aperture management, too.

However what if all of that wasn’t the case? That is the place MonsterAdapter and its new LA-KE1 adapter are available. MonsterAdapter has a good bit of expertise with lens adaptation, because it has beforehand created 4 electronically-equipped, E-mount MonsterAdapters for Contax N, Nikon F, Minolta Vectis and Sony A-mount lenses. This new Ok-to-E-mount adapter is kind of the identical tech in a distinct type issue.

The LA-KE1 allows you to shoot your Ok-mount lenses on crop or full-frame Sony E-mount our bodies and means that you can both change forwards and backwards between Ok-mount and E-mount our bodies whereas sharing lenses, or transfer to Sony fully whereas taking a lot of your Pentax lenses alongside for the experience. It is primarily a OkAF2 mount, which means it helps each screw-drive AF and digital management for in-lens AF, and likewise has an aperture actuation lever.

The MonsterAdapter has two motors constructed into its exterior protrusions which offer for each screw-drive autofocus and aperture actuation.

For those who’ve chosen the latter path, it might additionally probably ease the transition to mirrorless, letting you defer a number of the improve value by holding off on changing your complete lens assortment without delay.

It is equally vital to notice what this adapter cannot do although. It will not permit autofocus throughout video seize in any respect, and nor will it absolutely work with each AF-capable Ok-mount lens or E-mount digital camera physique. However, in case your lenses are absolutely supported, it will provide the entry to autofocus and digital aperture management that different adapters lack. And typically, it’ll additionally allow you to entry Sony’s glorious AF monitoring, face recognition and human/animal eye detection along with your Pentax glass.

Obtainable instantly, the MonsterAdapter LA-KE1 is priced at $439 within the US market.


Key Takeaways

  • Adapts many Pentax Ok-mount lenses to Sony E-mount
  • Helps in-lens and in-body autofocus / aperture drive
  • Permits each single and steady AF
  • Appropriate with in-body stabilization
  • Lets Pentaxians use Sony options together with Eye AF
  • Strong construct, however not weather-sealed
  • Will not help video seize with AF or aperture management

ISO 50 | 1/80 sec | F2.8 | 40mm | Sony A7R III
Photograph taken by Mike Tomkins with HD PENTAX-DA 40mm f/2.8 Restricted

Mount adapters add again the majority mirrorless pared away

Because it sits in between the digital camera physique and lens with which you are capturing, the MonsterAdapter provides 46mm (1.8″) to the depth of their mixture. That, together with the truth that SLR lenses are typically bulkier within the first place, successfully negates the dimensions and weight benefit of the mirrorless physique.

Therefore, you will nonetheless get a greater capturing expertise with designed-for-mirrorless lenses, except measurement and weight aren’t a priority as in, say, studio capturing. Save for a few protrusions to permit area for motors, the barrel of the adapter is about 66mm (2.6″) diameter. That is about the identical diameter as Pentax’s 100mm F2.8 WR Macro lens, by means of comparability.

As seen from behind when mounted, a giant bulge on the backside left of the adapter homes an autofocus motor for screw-drive AF. A change on the bottom of this bulge permits autofocus to be switched on or off on the adapter and can override that on the lens itself if set to the off place. (It additionally takes over from the software program setting in Sony’s menu system, which will not allow you to disable AF utilizing that choice if the adapter is mounted.)

Even a really compact lens just like the Pentax 40mm F2.8 feels chunky while you add again the depth that mirrorless pared away from DSLR designs.

Carry new life to a failing SDM lens with AF kind choice

On the other facet of the barrel you will discover a smaller bulge for the aperture management motor and a pleasant spring-loaded mount launch change. You may additionally discover yet one more tiny change hidden beneath the highest of the Ok-mount contained in the adapter physique, however likelihood is that you will by no means want to make use of it. For those who do, although, it might breathe new life into an otherwise-broken optic which could nicely have been past economical restore.

Flick this change out of its default place and for lenses which supply a selection of both in-lens or screw-drive AF, operation will probably be locked into the screw-drive mode. For those who personal a lens with a failed inside motor that is probably a giant deal, respiratory new life into an in any other case AF-less lens. On condition that SDM motors have a questionable status, particularly these which are not used steadily, this change might be a lifesaver for some Pentaxians.

A rugged metallic physique and mounts, however no climate sealing

The aforementioned AF/MF change, in the meantime, works completely nicely however has a really sturdy click on detent and a slightly plastic-on-plastic really feel in use. It is also a bit tough to learn the very faint, body-colored AF/MF markings adjoining to the change, and these shortcomings do detract somewhat from the sensation of high quality.

The MonsterAdapter LA-KE1’s focus mode change (left) feels a bit plasticky in use. Its hidden focus drive selector change (proper) is a possible lifesaver, although!

So too does the bundled Pentax Ok-mount physique cap, which does not lock in place like Pentax’s personal bayonet-style caps would. (Though admittedly, a lot of Pentax cameras ship with cheaper push-fit caps as a substitute.)

I discovered MonsterAdapter’s chosen cap tends to come back free fairly simply, although, because it takes little or no effort to show and has a grippy, deeply-knurled periphery. I would suggest switching it out for a better-quality cap to stop unintentional injury if the quilt comes off whereas in your digital camera bag.

It is also price noting that the MonsterAdapter is not weather-sealed, so even when your chosen lens and physique are, it’ll symbolize a weak hyperlink in that protecting chain and forestall you capturing in antagonistic circumstances with out some exterior type of safety.

However with all of that stated, the barrel of the adapter is molded as a single metallic half with solely the protrusion for the AF motor/change created from plastic alone. That offers the MonsterAdapter LA-KE1 a pleasant feeling of solidity that reassures you of its power, as does the 1kg (2.2lbs) higher restrict for lens weight when when capturing with out mounting the mixture through a tripod collar.

The LA-KE1’s physique cap does not lock in place and its free match means it comes off somewhat too simply.

Options and efficiency differ along with your chosen digital camera physique

The LA-KE1 helps an extended checklist of our bodies, however the diploma of help does differ in one in every of three totally different tiers. The highest tier help what the corporate calls its ‘G Driver’ algorithm, which guarantees ‘full use’ of the digital camera’s efficiency for AF velocity and focus monitoring programs. There are then two decrease levels of AF efficiency: absolutely supported and ‘restricted’ help, with a number of the older fashions in every class shedding the Eye-AF operate.

‘G Driver’ appropriate
  • Sony a7R IV (A)
  • Sony a7 IV
‘Absolutely appropriate’
  • Sony a9
  • Sony a9 II
  • Sony a7R II
  • Sony a7R III
  • Sony a7R III (A)
  • Sony a7S III
  • Sony a7 II*
  • Sony a7 III
  • Sony a6100
  • Sony a6300*
  • Sony a6400
  • Sony a6500
  • Sony ZV-E10
Restricted AF help (full aperture management)
  • Sony a7
  • Sony a7R*
  • Sony a7S
  • Sony a7S II
  • Sony a3000
  • Sony a3500
  • Sony a5000
  • Sony a5100
  • Sony a6000
  • Sony NEX fashions

* Eye-AF not supported

Not each lens is supported both, however plenty of nice ones are

The checklist of supported lenses is even lengthier and made up nearly fully of primes, with solely 9 of 53 supported lenses being zooms. Of those, 21 are APS-C lenses and the rest are full-frame sorts. APS-C lenses will probably be mechanically detected by the hooked up digital camera and the crop utilized, though you may override this should you desire.

And never solely are many beloved Restricted and Star lenses included on the checklist, but in addition some quirkier fashions too. Do not count on help for low-end client glass any time quickly, although. Not surprisingly, equipment or journey zooms do not make the reduce. In all, the checklist of supported lenses is as follows, sorted by focal size:

Prime Lenses Zoom Lenses
  • HD / smc PENTAX-DA 15mm f/4 AL Restricted
  • HD PENTAX-D FA 21mm F2.4 ED Restricted DC WR
  • HD / smc PENTAX-DA 21mm f/3.2 ED AL Restricted
  • smc PENTAX-FA* 24mm f/2 AL[IF]
  • smc PENTAX-FA 28mm f/2.8 AL
  • smc PENTAX-F 28mm F2.8
  • HD / smc PENTAX-FA 31mm F1.8 Restricted
  • HD / smc PENTAX-FA 35mm F2
  • Samsung/Schneider D-XENOGON 35mm f/2
  • smc PENTAX-DA 35mm F2.4 AL
  • HD / smc PENTAX-DA 35mm f/2.8 Macro Restricted
  • HD / smc PENTAX-DA 40mm f/2.8 Restricted
  • smc PENTAX-DA 40mm f/2.8 XS
  • HD / smc PENTAX-FA 43mm F1.9 Restricted
  • HD PENTAX-D FA* 50mm F1.4 SDM AW
  • smc PENTAX-FA 50mm F1.4
  • smc PENTAX-F 50mm F1.4
  • smc PENTAX-DA 50mm f/1.8
  • smc PENTAX-D FA Macro 50mm F2.8
  • smc PENTAX-FA Macro 50mm F2.8
  • smc PENTAX-DA* 55mm F1.4 SDM
  • HD / smc PENTAX-DA 70mm f/2.4 Restricted
  • HD / smc PENTAX-FA 77mm F1.8 Restricted
  • HD PENTAX-D FA 85mm F1.4 ED SDM AW
  • smc PENTAX-FA* 85mm f/1.4 [IF]
  • smc PENTAX-D FA Macro 100mm f/2.8 WR
  • Samsung/Schneider D-XENON 100mm f/2.8 Macro
  • smc PENTAX-F Macro 100mm F2.8
  • smc PENTAX-FA 135mm f/2.8 [IF]
  • smc PENTAX-DA* 200mm F2.8 ED [IF] SDM
  • smc PENTAX-FA* 200mm f/2.8 ED[IF]
  • smc PENTAX-DA* 300mm F4 ED [IF] SDM
  • smc PENTAX-FA* 300mm f/2.8 ED[IF]
  • smc PENTAX-FA* 300mm f/4.5 ED[IF]
  • smc PENTAX-FA* 400mm F5.6 ED[IF]
  • HD PENTAX-DA* 11-18mm F2.8 ED DC AW
  • smc PENTAX-DA* 16-50mm F2.8 ED AL [IF] SDM
  • HD PENTAX-DA 20-40mm F2.8-4 ED Restricted DC WR
  • smc PENTAX-DA* 50-135mm F2.8 ED [IF] SDM
  • smc PENTAX-DA* 60-250mm F4 [IF] SDM
  • HD PENTAX-D FA* 70-200mm F2.8 ED DC AW
  • HD PENTAX-D FA 70-210mm F4 ED SDM WR
  • smc PENTAX-FA* 80-200mm f/2.8 ED[IF]
  • HD PENTAX-D FA 150-450mm F4.5-5.6 ED DC AW

AF is slower than on Pentax, however quick sufficient for a lot of topics

The MonsterAdapter works for both single or steady autofocus operation and permits entry to the complete AF level density and protection of your Sony digital camera with Pentax glass. It additionally offers you entry to options of Sony’s cameras like eye autofocus for people and animals.

To get a way of autofocus efficiency, I in contrast AF velocity side-by-side with the identical lenses mounted both on a Sony a7r III with MonsterAdapter LA-KE1 or a Pentax Ok-1 II physique.

Timings for the Pentax had been taken for each phase-detection AF when capturing by means of the viewfinder, and contrast-detection AF in live-view mode. Each cameras had been set to middle AF and centered on a close-by topic in preparation. I then autofocused on a distant topic adopted by the nearer one, and repeated this course of ten instances as shortly as doable.

Because the aim was to report the quickest time doable, if both digital camera confirmed difficulties in focusing – which occurred a number of instances with the MonsterAdapter and a couple of times with the Pentax – the end result was discarded and the take a look at restarted.

20x refocus take a look at time (seconds)
Pentax Ok-1 II PDAF Pentax Ok-1 II CDAF Sony A7R III w/ adapter

HD PENTAX-DA 15mm f/4 AL Restricted

23.2 24.1 32.1

HD PENTAX-DA 21mm f/3.2 ED AL Restricted

20.7 23.1 33.1

HD PENTAX-DA 40mm f/2.8 Restricted

22.8 25.4 50.2

HD PENTAX-D FA* 50mm F1.4 SDM AW

19.1 27.9 37.9

smc PENTAX-D FA Macro 100mm f/2.8 WR

27.4 33.8 (no time set)
HD PENTAX-D FA* 70-200mm F2.8 ED DC AW (vast) 23.7 29.9 36.7

HD PENTAX-D FA* 70-200mm F2.8 ED DC AW (tele)

25.2 36.4 47.2

The outcomes had been as above, and some issues stand out from them.

Firstly, be aware {that a} time could not be set for the 100mm macro lens. Whereas it labored tremendous with the MonsterAdapter if it was already close to to being centered, if it was considerably out of focus the lens would merely rack the main focus forwards and backwards with out a lock. If the lens had a spotlight limiter this might need helped, however sadly it does not.

Secondly, we will see that even on a higher-end Sony physique – the A7R III is of the same classic to the Ok-1 II however with a 50%-higher pricetag – efficiency with the adapter trails that of the Pentax digital camera by fairly a way. We weren’t in a position to evaluate the efficiency with one of many G Driver-compatible our bodies.

In comparison with Pentax’s phase-detection autofocus, the tailored lenses focus round 40-60% extra slowly, though this does differ considerably by lens mannequin and AF know-how. A fairer comparability is to Pentax’s stay view AF, maybe, and right here the MonsterAdapter comes nearer, trailing by about 20-40%.

Sony’s Eye Autofocus operate – used on this fast portrait of my son – might be the perfect argument for utilizing the LA-KE1 adapter.
ISO 4000 | 1/200 sec | F2.8 | 200mm | Sony A7R III
Photograph taken by Mike Tomkins with HD PENTAX-D FA* 70-200mm F2.8 ED DC AW

Capturing with in-lens AF is extra satisfying than screw-drive

The very best outcomes are positively to be discovered with in-lens AF, with the SDM motor of the 50mm F1.4 and the DC motor of the 70-200mm F2.8 proving probably the most satisfying to make use of in the true world. Screw-drive lenses are slower to focus, however nonetheless fairly usable as long as AF is a minimum of within the ballpark to begin off with.

Additionally be aware that as you’d count on, the problem rises together with the focal size. The 70-200mm zoom focuses extra slowly at its telephoto finish, !!!one thing that is additionally true when capturing on a Pentax physique. It is also noticeable on the tailored primes, with the perfect efficiency coming from these with a wider-angle design.

General, I discovered efficiency to be fairly acceptable. The MonsterAdapter is not going to have the ability to sustain with faster-moving topics like sports activities, however for much less lively topics like portraiture, avenue images, landscapes and so forth, it is ready to ship cheap to good efficiency as long as your lens is reasonably close to to being in focus to begin with.

Capturing sports activities is not completely unimaginable with the MonsterAdapter LA-KE1, as these photographs of an impromptu Frisbee sport in downtown Knoxville present, however it’s far more difficult than utilizing a faster-focusing, native E-mount lens can be.

Correct aperture management each mechanically and electronically

Simply because it helps each in-lens and in-body focus management, the MonsterAdapter LA-KE1 can be appropriate each with extra trendy OkAF4 lenses with digital aperture management, in addition to older sorts with a mechanical aperture coupling.

Each technique of controlling aperture are supported not only for stills but in addition for video seize. There may be one slight quirk within the MonsterAdapter’s aperture help, nonetheless. It is seemingly a limitation of Sony’s our bodies, extra so than it’s of the adapter itself.

A number of of Pentax’s lenses have non-standard most apertures such because the 21mm F3.2 or 43mm F1.9. For those who mount these, they will work for probably the most half, however their most aperture will probably be curtailed simply barely to the subsequent customary worth down the checklist. Successfully, the 21mm F3.2 turns into a 21mm F3.5, and the 43mm F1.9 acts as a 43mm F2.0 optic, for instance.

With that limitation apart although, aperture management is fast, steady and repeatable for each mechanical and digital variants. Focal size/aperture info can be in any other case recorded precisely in EXIF info.

ISO 3200 | 1/100 sec | F2.8 | 100mm | Sony A7R III
Photograph taken by Mike Tomkins with smc PENTAX-D FA Macro 100mm f/2.8 WR

Video is not supported attributable to Sony adapter limitations

So if all of Pentax’s present AF and aperture drive mechanisms are supported and you’ll even use steady autofocus, why no video help? The reply is right down to Sony’s adapters themselves.

When an adapter is mounted to a Sony E-mount digital camera, it switches into an tailored mode which disables autofocus for video seize. Sony seemingly made that call each to make sure the perfect expertise for its upgrading A-mount prospects and to assist drive lens gross sales. Because it emulates a Sony adapter, although, the MonsterAdapter has to play by the identical rulebook.

Meaning no AF for video seize and no chance of it being added in a future replace both, sadly. That is an important disgrace and robs MonsterAdapter of a possible promoting level – we’re positive many Pentaxians would like to have a second physique able to first rate video seize, an space Ricoh neglects – however solely Sony can change this, and it has little to no incentive to take action.

ISO 50 | 1/50 sec | F4.0 | 15mm (35mm equiv. 22mm) | Sony A7R III
Photograph taken by Mike Tomkins with HD PENTAX-DA 15mm f/4 AL Restricted

Unsupported lenses most likely will not work, even when comparable lenses are on the checklist

If in case you have lenses that are not on the formally supported checklist, you might be questioning what you may count on should you attempt them. I did too, and examined a good few lenses that are not on the formally supported checklist. None might constantly handle to focus, though the exact symptom diversified.

Some lenses would not even attempt to focus or would instantly (and incorrectly) report a spotlight lock when AF was requested. Others would try and focus, however repeatedly fail to detect a spotlight lock as they racked previous the proper distance.

A number of lenses would try and focus a single time, however then lock up till the digital camera was power-cycled or the lens reseated. And in some circumstances, I might handle to get usable photographs often as nicely, however these had been comparatively few and much between, and with no consistency from scene to scene. And all of that is true even the place the lenses would appear, a minimum of externally-speaking, to be near-identical to supported fashions.

ISO 50 | 0.8 sec | F4.5 | 100mm | Sony A7R III
Photograph taken by Mike Tomkins with smc PENTAX-D FA Macro 100mm f/2.8 WR

Throughout my evaluate, I attempted some lenses whose smc variants had been on my beta firmware’s supported checklist however whose HD-coated variants weren’t. Per Pentax, they’re principally the identical lenses as earlier than optically-speaking, save for his or her coatings. From the adapter’s perspective although, the interior variations had been adequate to require new profiles to be made and the lenses thus could not be used within the interim.

After all, you may nonetheless use unsupported lenses by focusing manually identical to you may with a dumb adapter. However I counsel shopping for this adapter just for the lenses it at the moment helps, not within the hope of utilizing an unsupported lens. Ought to your lens be added to the formally supported checklist you should still be capable to use it will definitely, however till that time the expertise will seemingly be poor to unusable.

ISO 2000 | 1/60 sec | F3.5 | 21mm (35mm equiv. 31mm) | Sony A7R III
Photograph taken by Mike Tomkins with HD PENTAX-DA 21mm f/3.2 ED AL Restricted

Fairly steady and upgradeable for future lens help

General, I discovered stability to be fairly good. I did as soon as expertise a digital camera lockup that required me to reseat the battery, however aside from that one-off, I skilled no actual stability points.

If any points do come up although, there’s the potential for brand spanking new firmware to be launched addressing these. It is also doable for brand spanking new lenses to be supported on the identical time.

The replace course of is fairly fast and simple, however sadly does require entry to a Home windows PC. That is as a result of updates can solely be put in utilizing a USB cable tethered to your Sony digital camera physique. There is not any facility for upgrading from a file in your SD card, nor for connecting the adapter on to your laptop.


Conclusion

If you wish to use your Pentax lenses on Sony E-mount our bodies with out shedding autofocus, the MonsterAdapter LA-KE1 is principally the one sport on the town. All of its rivals lack digital connectivity, and so successfully make your Pentax glass manual-focus solely. With its supported lenses and our bodies, the MonsterAdapter is free of this limitation.

Whereas its efficiency will differ relying upon your chosen lenses and digital camera our bodies, we discovered the LA-KE1 adapter to yield slightly lesser AF efficiency than is natively out there from Pentax our bodies, even after they’re utilizing their slower contrast-detection AF in stay view mode.

However we additionally discovered that getting focus within the ballpark first helps considerably with efficiency, particularly for screw-drive lenses or these with lengthy focus throws. And whereas it wasn’t as peppy because the native AF, we discovered the LA-KE1’s AF velocity fairly acceptable for all however very lively topics like sports activities.

And that tradeoff in efficiency brings extra potential than the plain benefit of with the ability to use your Pentax glass with a mirrorless physique. For one factor, it means entry to resolutions past the Ok-1 II’s 36 megapixels, and multi-shot high-res imagery that (in contrast to Ricoh’s) will increase the pixel rely nonetheless additional.

For an additional factor, it beneficial properties you entry to Sony’s eye-detection autofocus algorithms, which could be vastly useful for portraits of individuals and pets alike. And you will have dense AF protection throughout the body, in contrast to Pentax’s phase-detection AF which has comparatively few factors and is centrally-focused.

The main target drive delivers adequate accuracy not only for Sony’s cameras to nail focus in a exact space of the picture, but in addition to permit for issues like tremendous changes to focus when tethering. Actually, I even efficiently used it for focus bracketing with Sony’s Imaging Edge Distant and the open-source B8Stack utility.

ISO 100 | 1/500 sec | F2.8 | 200mm | Sony A7R III
Photograph taken by Mike Tomkins with HD PENTAX-D FA* 70-200mm F2.8 ED DC AW

It is an important pity that help for video seize is not doable, as that is lengthy been a weak spot of the Pentax Ok-mount which, if solvable, might’ve been an enormous deal for Pentaxians. However MonsterAdapter has to work throughout the boundaries of what Sony’s lens adapter help permits, and so for now first rate Ok-mount video should stay a pipe dream.

Actually, the one sticking level is the cost. There is not any getting round the truth that that is fairly an costly adapter even when in comparison with comparable merchandise from a lot better-known names. For instance, Sony’s personal LA-EA5 adapter is available in at round $250, as do each Sigma’s MC-11 adapters for EF and SA-mount lenses.

However Sony and Sigma can subsidize its prices with physique or lens gross sales, whereas the MonsterAdapter’s fortunes should stand by itself gross sales alone. The excessive pricetag is not fully unprecedented, both, as Metabones’ EF-mount adapters additionally are available at round $400.

ISO 125 | 1/200 sec | F2.8 | 200mm | Sony A7R III
Photograph taken by Mike Tomkins with HD PENTAX-D FA* 70-200mm F2.8 ED DC AW

Making an allowance for that the Pentax Ok-mount is already a reasonably small area of interest within the general market, and that the LA-KE1 inhabits an excellent tinier area of interest inside, its pricetag does not appear unreasonable. For the worth of a single consumer-grade lens, you could possibly probably prolong the lifetime of many Pentax lenses into the mirrorless age whereas nonetheless retaining usable autofocus.

Whether or not you are hooked on the look these lenses present or simply wish to delay shopping for their replacements for so long as doable, the MonsterAdapter LA-KE1 is unquestionably worthy of consideration.

What we like:

  • Pentax glass on Sony E-mount with out shedding AF and aperture management
  • Comparatively small and compact
  • Strong, sturdy construct
  • Works with each single and steady AF
  • Works with screw-drive and in-lens AF motors, even for precision operations like remote-controlled focus stacking
  • Works with mechanical and digital aperture management
  • Works with in-body picture stabilization

What we do not:

  • Fairly dear
  • No climate sealing
  • Management really feel is not very premium
  • Negates the dimensions benefit of mirrorless cameras
  • Slower AF than with a Pentax physique
  • No video autofocus

We will be happy to hear your thoughts

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