This is a dream combination for those of you that want maximum zoom range with constant and fast f/2.8 aperture! What you see here is a 14-560mm 2.8 Canon HJ40X14B lens worth $82,000 on BHphoto (Click here). SAR reader Jacob Dyke tested it on the Sony A7s:
“A7s mounted to a Canon HJ40-14b via FotodioxPro B4 to NEX adaptor. Its a 2/3″ TV production lens but with the built in 2x extender it covers the APS-C/super35 size in crop mode. This equals a 14-560mm 2.8 with optical image stabilization.”
Update: Here is an image sample taken with that combination. APS-C mode lens at 2x full zoom:
Jacob also wrote why he tested that combo:
I work in sports tv production so I wanted to test this adaptor out with the FS700 and just took the photo of the a7s mounted for you guys cuz im sure no one had done it before. I mean the body isnt even secured to the support plate, I would never actually use the set up like this. The FS700 mounts up very well and I did some test which I was really pleased with. Its clearly a video lens, I will post some video soon of the tests. We tested it against a sony 70-400 4-5.6 with a 1.4x via the LEA2 on the FS700, which should equal out to be about 560mm plus the crop of the super35 and the Canon had at least another 50-100mm. I have been trying to wrap my brain around the math to get the conversions correct from going to 2x but then using a bigger sensor and all that but still havent figured it out. Also the lens has to be powered for the Image stabilization to work, fotodiox does make a battery pack to power the lens but I dont have that yet. Again this was not meant to be a fully compatible setup, clearly its limited to a specific use and that will be wildlife filming at 240fps!
Oh right and clearly sports filming as well. Clients that I work for that own an FS700 and a B4 lens can now have a super slowmo camera added to there live show via the SDI output while still being able to take the camera live and use all the hand controls to make it operate like a standard tripod build up.
Full frame mode lens at 1x full zoom:
Thanks Jacob for sharing!
First posted on SonyAlphaForum.
Sony A7s store links:
Sony A7s in USA/CA at Amazon, Adorama, BHphoto, Sony USA, Sony Canada.
Sony A7s in Eu at Sony DE, UK, ES, FR, IT, NL, BE, AT, CH, SE, NO, FI, PL. And Wex UK.
A7s Gariz leather case in [shoplink 27569 ebay]Black (Click here)[/shoplink], [shoplink 27570 ebay]Brown (Click here)[/shoplink], [shoplink 27571 ebay]Red (Click here)[/shoplink] and [shoplink 27572 ebay]Orange (Click here)[/shoplink].
0 Responses
Insert A-Mount comments here !!!
It’s dead. Out.
LOL
The dumbest contraption ever!
I feel so sorry for you.
Wait, so it’s APS-C? So it only covers 5MP with the a7s? Not exactly full compatibility.
Admin, stop posting junk.
I like it 🙂
We all like it for the annoyance of Canon fanboys
You need a Sigzilla to cover full frame at 500mm f/2.8. 😉
No one said full compatibility, any cinema lens for super35 put on with a PL mount to the a7s would be used in crop mode. Remember these a7 cameras span the full gamut of photo/video users. Not every one needs the same things.
OSS sure, but the bokeh’s a little nervous.
Pass.
I like it too! However, I am not sure you end up with F2.8 after you use the B4 adaptor, I think you will loose at least 2 stops. Checking at the Canon web-site the Canon HJ40X14B appears not to sustain F2.8 beyond 307mm but that is not bad if you ignore the price. Obviously it would go better on the FS7 but that wasn’t the point.
You are correct. I have been trying figure out the exact lens specs with the adaptor and using the 2x. The spec sheet says with the 2x in at full zoom it becomes a f10.2 plus the added loss of the adaptor. Its ideal for most situations I am going to film some bald eagles later this month and I have access to use this lens so why not try it out for 130 bucks to get the adaptor. Also I am going to be using it with the FS700 for slow mo of the eagles. Shot some tests at 240fps and it looks great. Still with the a7s not so much…
He tested the lens but there’s no picture and/or video of the results for us to see? 🙁
I just posted photos on the facebook page. Its not a still lens ill tell you that haha
I’m worried about macro mode using this lens. Also stabilization and AF might be a problem 🙂
I would be a lot more worried about my wife’s reaction when I told her I wanted to buy a $82,000 camera lens!!!!
With a name like ramshooter you should shoot first and ask questions later!
it’s better to use that lens with m43 or 1″ camera
But the Pentax Q is the best!
I wonder how much that tripod costs.
Its about 7 years old but I think I was close 10 grand then
Glad that lens has got OIS – for those quick one handed shots!
We can do it!ii (ironia mode ON)
Thanks!
But why do you say it’s not a still lens? It seems reasonably priced and sized for still handheld macro photography!
;p
But you can use the TOUGH E-Mount from Fotodiox to handed shots
+Solid, All Metal Construction
+Powerful Combination When Used with Fotodiox Pro Lens Mount Adapters
See!!! they say it will hold lol
Guys, you are actually thinking in T-stop values, not F-stop values (so don’t say f/10.2, say t). There is an enormous difference.
@jon, where are you getting T-stops? Canon specs this lens in F-stops. T-stops would have to be measured.
@Jacob Dyke, the math is very simple: when you engage the 2x extender, the focal length and F-number are doubled. The adapter has no optics in it, so it does not change the focal length or F-number.
On the a7S, you would need APS-C mode plus 1.2x digital zoom for this lens to cover the active sensor area (22 mm diagonal), and even then the 2x extender isn’t really designed to cover anything more than 11 mm so you can expect quite a lot of softness and lateral chromatic aberrations towards the edge of the frame.
With 2x extender, it is not 14-560/2.8 anymore, it is 28-1120/5.6. And it probably does not cover even APS-C at every FL.
It does cover the APS-C crop all the way through, check the video I took.
http://youtu.be/dShyIPSQ1bA
I understand that with the 2x in becomes a 28-1120 but the APS-C is about twice as big the 2/3″ sensor the lens is made for so I figure that it puts it back around a 14-560. This is the part I am having touble figuring out exaxtly.
Maximum Relative Aperture (F-Number)1 : 2.8 at 14mm~307mm
1 : 5.1 at 560mm (Ramping Characteristic)
Maximum Relative Aperture (F-Number) with Extender1 : 5.6 at 28~614mm
1 : 10.2 at 1120mm (Ramping Characteristic)
For 4K your better off using it on the GH4 or Samsung NX1.
definitely with a M4/3 sensor it would be a cleaner imagine being closer into the center of the optics. Not sure how crisp the 4k would look though. Still need to do more tests. Definitely excited to try new things out!
I find these video lenses, even very expensive ones have extreme chromatic aberrations.
They do, Live TV production just needs things now not so much thinking for archival purposes. Thats why NFL films uses Arri’s with proper Cinema lenses. You would be surprised how many networks still broadcast sports in 720p
You can, but you never should use such lens on A7. You can’t imagine how stupid it would be.
I would love to try it on the BMPCC. And then shoot it from the ISS.
It is video, so the crop is actually smaller than photo APS-C, right?
Yeah slightly on the top and bottom. You can compare the photos I posted on the Facebook post to the video if you like.