how do you control the aperture with this adapter. my i.e. 50mm 1.4 canon lense does not have on lense aperture control. and do you lose stops - like on my eos to fd adapter my 1.4 becomes a 2.4 more likely 3.4
1163187
You don't. You buy an ND filter and control light that way. Will always be wide open with this adapter. Main reason why I left canon years ago.
1521075
I just got this lens and cannot figure out how to adjust the aperture... I can only take photos in f/22 otherwise it tells me to "lock lens aperture ring at minimum aperture" even if I put it in M (manual) mode. How do I change it so the aperture is adjustable and not fixed?
653635
A full manual k mount lens has no machanical protrusions to adjust your aperture. These I feel are the safe ones the adapter is made for. I would look at the back of an EF mount lens and measure from the camera mirror when off you should be able to lift to a position that is far out as it will go. If you like it, go for it. I have a ID MK4 and will only use EF mounts even with the 1.3 sensor. Just looking at the lenses that are full manual film lenses, they look like they will work. Any other i won't comment anymore for, to many protrusions sticking to the mirror box. My manual lenses all work great with the adapter.
1361470
No, this adapter will not mount on the Canon AE-1 camera body. The AE-1 has an FD lens mount. This adapter mounts to the more modern EF lens mount found on EOS cameras and allows lenses with FD mount to be attached. An adapter going the other way (EF lens on FD body) is generally not possible because almost all EF lenses have the aperture controlled by the body (no iris ring). There would be no way to control the iris. If you are looking for more lenses for your AE-1, I would recommend looking for used FD lenses from a company like KEH or searching Amazon for "FD lens".
878743
As it was said any times in the customer's reviews (including mine), the adaptor does not fit perfectly and you have to do a few tries before getting used to it. The main point is to put the lens aperture control finger on the good side of the adaptor aperture control pin to allow the aperture control dial to rotate. If it does not rotate, you are on the wrong side. Hope this will help. Richard.
30043
I was able to fit in my smaller eyepieces in the adapter. There is a knurled screw that will hold the eyepiece in place. I've also found that it isn't designed to be used as a primary focus adapter unless you have a low profile focuser. Has anyone been able to find any larger eyepieces that will fit in the adapter?
2166158
The 1.4 is the lowest aperture. This i not the place to right a full lesson on what aperture achieves (paragraphs my friend!), but there is plenty of that info available with minimal searching required.
352399
I have used this lens very successfully with my Canon EOS T3i. I hope that you have the same experience. Bob
120389
Bonjour,I have use this adapter with 2 Sigma lenses one 10 20mm and a super long rage 120 400mm Pentax k mount on my Sony Nex 6 and it work great. It alow use to control manually the overture and you keep the infinity focus. Sincerely Jean Marc. PS hope this help and sorry for my spelling I am french.
1813746
Cindy, I purchased an EA1 adapter and returned it. Although it was a nicely constructed adapter it caused me to loose 1F stop from an already slow lense and it did not carry forth full auto focus capabilities, only auto exposure. I'm still searching for better options. These appear to be the differences: AE1- Converts Sony A/ Minolta mount to E mount. Auto exposure but no or limited auto focus. AE2- Converts Sony A/ Minolta mount to E mount. Auto focus, auto exposure w/ transluecent mirror. AE3- Same as AE1 but updated model. AE4- Same as AE2 but updated model If you really want an EA 1 or 2 there are other internet suppliers that still have these in stock.
1597073
Goodmorning. I have used this adapter on my SMC Takumar 50 mm f/1.4 on my Canon T3i with no problems. The lens only protrudes beyond the flange maybe an 1/8 of an inch. In fact it does not even protrude beyond the auto focusing contacts shelf (for lack of a better description). the Adapter is designed for the Modern Canon products. If you are using it on a camera that is older or one that does not have a Single lens Reflex (SLR) design this might be a problem. I would also take the adapter off to make sure the problem is not with the lens itself. It would be helpful to know what model/year Canon camera you are using to further understand the difficulty that you are experiencing. Goodmorning. I have used this adapter on my SMC Takumar 50 mm f/1.4 on my Canon T3i with no problems. The lens only protrudes beyond the flange maybe an 1/8 of an inch. In fact it does not even protrude beyond the auto focusing contacts shelf (for lack of a better description). the Adapter is designed for the Modern Canon products. If you are using it on a camera that is older or one that does not have a Single lens Reflex (SLR) design this might be a problem. I would also take the adapter off to make sure the problem is not with the lens itself. It would be helpful to know what model/year... » Read More Goodmorning. I have used this adapter on my SMC Takumar 50 mm f/1.4 on my Canon T3i with no problems. The lens only protrudes beyond the flange maybe an 1/8 of an inch. In fact it does not even protrude beyond the auto focusing contacts shelf (for lack of a better description). the Adapter is designed for the Modern Canon products. If you are using it on a camera that is older or one that does not have a Single lens Reflex (SLR) design this might be a problem. I would also take the adapter off to make sure the problem is not with the lens itself. It would be helpful to know what model/year Canon camera you are using to further understand the difficulty that you are experiencing. « Show Less
46369
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!
1771103
you seem to know alot Technology guy, so im replying to ya about a lens choice. Its the CanonEF-S 55-250mm f/4-5.6 IS for a 50D im purchasing but im not sure if its compatiable or will fit should I say, Because the 50D says its a EF mount and the rebels are EF-S mount. but since they say the 50D dont come with a lens that can take the use of the full power of the camera I wanted to get something I can afford and that lens i mentiond above is less than 300 usd. So please let me know if it works on the 50D without any problems thanks.
1610176
If you buy a canon to m4/3 adaptor you can use your lenses. However, there are some caveats to know about this. 1) If they are autofocus lenses, the autofocus will not work. So it will be pure old school manual focus. 2) If there is no manual aperture change ring on your lens you can buy an adaptor that will mechanically change the aperture. However, other than full open of full closed, you will be guessing at the f stop. 3) m4/3 has a 2x crop over 35mm. So if your lenses are for a 35mm sensor (i.e. 35mm film or digital sensor), the effective focal length will be x2. That means if you have a 50mm f/1.8 it will act like a 100mm f/1.8 as far field of view goes. As far as DOF it will still act like a 50 f1.8 but you will be standing 2x as far away so you will have a ~2 stop wider DOF. 4) The camera does not come setup to shoot other lenses. You have to go into the menus and switch on shoot w/o lens. Since there will be no electrical connections your camera will not think there is a lens attached and won't shoot otherwise. 5) Since there are no electrical connections, you will not get any lens information embedded into your meta data. I think that about covers it.
878744
As it was said any times in the customer's reviews (including mine), the adaptor does not fit perfectly and you have to do a few tries before getting used to it. The main point is to put the lens aperture control finger on the good side of the adaptor aperture control pin to allow the aperture control dial to rotate. If it does not rotate, you are on the wrong side.Hope this will help.Richard.
1049217
I have the type 2 adapter, which has a ring of metal at the bottom of the threads to push in the aperture pin. If you have a pin, you'll need the type 2; otherwise, your lens will be stuck wide open (maximum aperture, lowest f/number).
417554
From my experience using this adapter with an FD 50mm f1.4, the corrective lens causes a soft edge, or "bloom" effect at F-stops faster than around f2.8, creating an unusable image. Im not sure how the difference in focal length will affect it though.