Hey guys,
I have a "little“ problem with my Sigma 28-70 f/2.8 (the 1992 model, very old I know but I got it for free so why not (try) use it): whenever I want to take a photo with this lens at another aperture than 2.8, I get Err. 1 message (‘clean lens contacts and restart camera’). However, as long as I take photos at 2.8, it works perfectly fine. No errors.
But now it comes to the strange part (which doesn’t make sense to me): first of all, while filming, there is absolutely no problem if I use other apertures than 2.8, the camera continues to film as if the lens would work perfectly fine. Secondly, if I take photos with an aperture of more than 2.8, I get the error shown on the screen, but only while the camera is saving the photo I just took. After the photo is saved, it takes another maybe 5 secs, but then I can continue shooting (no restart of the camera needed). Of course in practice this is pretty annoying and very inefficient. I also need to underexpose the photo at about -2ev, no matter what shutter speed I use.
I already tried cleaning the contacts on the lens as the error message suggests, but ofc it didn’t help (which I honestly didn’t expected to do but yeah, still tried it). My friend, from whom I got this lens, has the same problem with the lens on his M50 (using the EF-M adapter obviously). I thought that maybe the adapter is the problem, but nope it’s not.
So I was wondering if anyone knows a solution to this problem (even though I suspect this to be a mechanical problem…)? And more importantly, is there any chance the lens could damage my camera in any way if I continue using it?
And yes, I know, this lens is pretty old and even if it would be possible, having it repaired wouldn’t make sense, but until I can afford a newer 2.8 lens I’d like to use this one since it’s my only lens besides the kit lens.
Thanks in advance and have a wonderful day/evening or whatever
I have a "little“ problem with my Sigma 28-70 f/2.8 (the 1992 model, very old I know but I got it for free so why not (try) use it): whenever I want to take a photo with this lens at another aperture than 2.8, I get Err. 1 message (‘clean lens contacts and restart camera’). However, as long as I take photos at 2.8, it works perfectly fine. No errors.
But now it comes to the strange part (which doesn’t make sense to me): first of all, while filming, there is absolutely no problem if I use other apertures than 2.8, the camera continues to film as if the lens would work perfectly fine. Secondly, if I take photos with an aperture of more than 2.8, I get the error shown on the screen, but only while the camera is saving the photo I just took. After the photo is saved, it takes another maybe 5 secs, but then I can continue shooting (no restart of the camera needed). Of course in practice this is pretty annoying and very inefficient. I also need to underexpose the photo at about -2ev, no matter what shutter speed I use.
I already tried cleaning the contacts on the lens as the error message suggests, but ofc it didn’t help (which I honestly didn’t expected to do but yeah, still tried it). My friend, from whom I got this lens, has the same problem with the lens on his M50 (using the EF-M adapter obviously). I thought that maybe the adapter is the problem, but nope it’s not.
So I was wondering if anyone knows a solution to this problem (even though I suspect this to be a mechanical problem…)? And more importantly, is there any chance the lens could damage my camera in any way if I continue using it?
And yes, I know, this lens is pretty old and even if it would be possible, having it repaired wouldn’t make sense, but until I can afford a newer 2.8 lens I’d like to use this one since it’s my only lens besides the kit lens.
Thanks in advance and have a wonderful day/evening or whatever
