Will a 1.4 f stop canon lens remain 1.4 on the Sony A7 body? Will the f-stop of the lens be accurately communicated to the new body?
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Hey there. Yes, the information will be sent back and forth flawlessly. Some cameras state the f-stop in odd numbers, but it is actually the proper f-stop. Be Aware! I got this and ended up getting the Mark III instead of the Mark IV and neither Amazon or Adorama will respond to me to rectify this. The adapter is fantastic, but get it from another source.
1224060
Hi Stephen,Image Stabilization/Steady Shot will not work when connecting a Sony SAL70300G lens on the Sony A7 Camera with Sony LA-EA4 Lens Adapter. - Vincent
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On the Sony A7R, the adapter did not vignette with the following legacy Pentax lenses: M 20/4, A 24/2.8, SMC 55/1.8, A 100/4 Macro at 1:2 magnification, A* 300/4, and the SMC 28/3.5 shift with the lens shifted to the maximum up position, the corner of the sky was OK. These tests were made in a store looking at the files on the display panel on the back of the A7 camera. I do not yet own the A7R camera, but it is very tempting. IF Pentax does not come out with a full frame camera soon, the A7R will be more than tempting.
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Well I may be muddling the water but I just called Sony and asked this question. The Lady I talked to said they still ship this lens without the new firmware and when purchased you must send it back to get the update. Doesn't make sense but its the only answer I could get.
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Content of detail that FF camera sensor is capable of resolving is very good. Basic 24mm f/2.8 lens is very wide on FF camera. All Sony FF cameras: A900 and A850, A99 and A7 and A7r are compatible with inexpensive Minolta Maxxum AF lenses - that were made for 35mm film cameras.
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It will fit the A7 but it is meant for a crop sensor and it won't cover the full frame sensor of the A7. It is manual focus and aperture. They also make a 14mm that is meant for full frame and will fit the A7.
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You can use it on Sony A7s. BUT first you need to buy the adapter ring to mount the lens on the camera. That adapter ring has M42 female thread (lens side) and male bayonet (camera side). Then the lens will work on All-in-All manual mode.I hope it helped.Zonesystem
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The f stop (aperture) of the zoom lens changes as the zoomed focal length changes. On the P7700, which should be the same for the P7800, the f stop changes in the following seven steps as the focal length is zoomed from 28mm to 200mm: 28mm - 2.0 30mm 33mm 35mm - 2.2 38mm 42mm - 2.5 46mm 50mm - 2.8 58mm 66mm - 3.2 74mm 85mm 92mm 105mm - 3.5 117mm 135mm 152mm 175mm - 4.0 200mm
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This lens is an a-mount, FT lens. If attached to the A7 with the correct adapter, such as the LA-EA4, AF and AE will function properly. However, as a DT lens, it will produce significant vignetting and clipping at the edges of the frame unless the reduced sensor area mode is enabled. I would absolutely recommend against using this lens with any full frame camera.
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You have to use the "manual" setting on the camera when using the adapter. All other camera settings are non-operational. I don't know what kind of lens you are using with the adapter, but with a fixed f-stop lens, you have to change your iso setting in the camera to compensate for light conditions. Hope this helps!
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Hi, Yes that should work. What you will loose is the f stop, please see that you should have a f stop of 2.8 or higher. With my 2.8 f stop lens it goes to f 5.6.
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On my A7 it works perfectly ok with my canon lenses. Not so good was the Tokina 12-24mm, but they were really meant for APS sensors anyway, and A Rokinon 8mm fisheye. Hopelessly vignetted, as in literally half the frame missing.
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Gary, it's a full frame lens but to use on A7 you need an adaptor (la-ea4).
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On the A55 & A65 Cameras the Sony lens are inter-changeable.With this said ... what I did note with my A55 unit, going back a couple of years, was that some 'auto' features ( were not available ) when trying to use another manufacturers lens ( something to do with the 'pin line up' ). Accordingly ... I choice to order the Sony lens at that time.
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F-stop/aperture does not represent clarity, but no, it does not lose a stop. I haven't had any cropped images, nor have I even noticed any vignetting as a result of using this. The widest lens I've used with this is a 28mm
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Hi - Just double-checked a couple of OM lenses on my Sony a7r using this adapter. I want to make sure I'm completely understanding the question: if you're asking whether there will be any vignetting of the image, the answer is no (except to the extent that a specific lens shows some light falloff at the edges, but that's not an adapter issue, and you'd have the same phenomenon on an OM film body). If the question is whether or not the image will be cropped (using the term to refer to the so-called "crop factor" associated with smaller-than-24x36 sensors): again, the answer's no. OM lenses are full-frame lenses, the a7 is a full-frame body - so no cropping of the image. Hope that's helpful!
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Hi, The lens will work fine with the A7, but because it is designed for APSC it will only provide a circular image on the A7 full sensor. The A7 can be set to crop to APSC automatically to provide an image equivalent to 18mm. This image will only be about 10 mega-pixels. On a recent trip to the Venica Carnival I used a Sigma 12-24mm EX DG ASP HSM II with an LA-EA4 adapter, which worked fine but is somewhat bulky. There is a Rokinon 14mm f2.8 full-frame lens with a Sony FE fitting, but it is manual focus. Used at hyperfocal settings it can be pretty fast because it doesn't need focusing.. good for wide landscapes.Cheers, Eb Hi, The lens will work fine with the A7, but because it is designed for APSC it will only provide a circular image on the A7 full sensor. The A7 can be set to crop to APSC automatically to provide an image equivalent to 18mm. This image will only be about 10 mega-pixels. On a recent trip to the Venica Carnival I used a Sigma 12-24mm EX DG ASP HSM II with an LA-EA4 adapter, which worked fine but is somewhat bulky. There is a Rokinon 14mm f2.8 full-frame lens with a Sony FE fitting, but it is manual focus. Used at hyperfocal settings it can be pretty fast because it doesn't need focusing..... » Read More Hi, The lens will work fine with the A7, but because it is designed for APSC it will only provide a circular image on the A7 full sensor. The A7 can be set to crop to APSC automatically to provide an image equivalent to 18mm. This image will only be about 10 mega-pixels. On a recent trip to the Venica Carnival I used a Sigma 12-24mm EX DG ASP HSM II with an LA-EA4 adapter, which worked fine but is somewhat bulky. There is a Rokinon 14mm f2.8 full-frame lens with a Sony FE fitting, but it is manual focus. Used at hyperfocal settings it can be pretty fast because it doesn't need focusing.. good for wide landscapes.Cheers, Eb « Show Less