Search results for 'back focus' - page 2114
Stuck Tubes - Help !
... Nigel, can you confirm whether both the couplings (stop-down and aperture transmission) are free to move in all these tubes? Good question... Each tube has two levers, one short one long. The long one is connected to a spring running around half the diameter at the camera end. This long leve...
Posted by McGregNi on 30/06/2014 - 12:30
Lens Not Reading F Stops
Hi all, Lens - Sigma 18-250 OS HSM The lens isn’t showing the F Stop information on the camera display, the display just shows F---- and the images come out very, very white. If I press the lens release button and twist the lens a quarter of a turn then turn it back to lock it back onto th...
Posted by malvern_man on 23/06/2014 - 21:36
Lens Not Reading F Stops
If it's still under warranty send it back- no messing. An intermittent fault like that is unlikely to self heal. I was going to suggest unmounting the lens and giving it a fairly gentle shake in case there was dirt or debris lodged where it can't be seen
Posted by spinno on 23/06/2014 - 21:54
Lens Not Reading F Stops
If it's still under warranty send it back- no messing. I have phoned sigma just to confirm that the lens is still covered by the 3 year extended warranty and it is, until September. They told me to package it up and return it to them for repair. Thanks for the replies. Regards, Chris.
Posted by malvern_man on 24/06/2014 - 15:44
Lens Not Reading F Stops
My 105 did exactly the same thing. All I did to get it back was loosen off the screws on the mount, not taking them out, and giving the mounts a jiggle then re-tighten them, the screws look like a Philips cross head screw but they aint, its a JIS screw. BUT if its still under warranty send it bac...
Posted by bettyswolloks on 24/06/2014 - 20:09
Lens Not Reading F Stops
Sounds like a problem with contacts somewhere and because it's the same on several bodies it must be the lens. Possibly just needs some internal contacts cleaning. Send it back. --
Posted by Algernon on 24/06/2014 - 20:26
Lens Not Reading F Stops
My 70 - 300 does this - I just move the aperture ring from 'a' wiggle it between apetures and put it back to 'a' and hey presto it works again :D
Posted by Stuey on 24/06/2014 - 22:39
Lens Not Reading F Stops
My 70 - 300 does this - I just move the aperture ring from 'a' wiggle it between apetures and put it back to 'a' and hey presto it works again :D The 18-250 doesn't have an aperture ring. It has now been posted back to Sigma. Regards, Chris.
Posted by malvern_man on 25/06/2014 - 20:34
Lens Not Reading F Stops
** UPDATE ** I have now received the lens back from Sigma. The enclosed paperwork said that after initial testing no connection issue was found. The work carried out was - repair zoom, check mount, reset, check & test. I gave the lens a good testing today ( over 1000 shots taken ) and it...
Posted by malvern_man on 06/07/2014 - 21:29
Focus problem k-x
I think i have backfocus problem in my k-x. It focus a bit back, not on the suject. Any manual method to set it correctly?
Posted by goinnovative on 11/07/2014 - 20:07
Focus problem k-x
The only way with a K-x is to open the 'Debug Menu', click on the link below and follow the instructions. Regards David
Posted by davidstorm on 11/07/2014 - 22:42
Focus problem k-x
Looks like you've focused on the rock behind. Is this a one off user error. Or is it every shot.
Posted by Blythman on 11/07/2014 - 23:53
Focus problem k-x
I recall similar issues on my K-x when I first bought it. Not had a problem since I set centre focus; I set focus on the subject then once locked move to frame it properly.
Posted by thespirit3 on 12/07/2014 - 08:33
Focus problem k-x
thanks:)
Posted by goinnovative on 26/07/2014 - 20:21
k3 autofocus
Out with k3 yesterday when using spot focus, focus a lot of times staying locked had to take shot to get it going again, back auto focus worked fine . Also would go off sometimes with movement of camera any ideas
Posted by whatsthisbuttondo on 14/07/2014 - 09:26
k3 autofocus
I've had mine focus and then wouldn't take the shot a number of times. Very random. I've sent mine in for repair/service.... :( Never had it go off with the movement of the camera. Do you have a grip on it? could the button on the grip have triggered the camera?
Posted by GDN on 14/07/2014 - 13:47
k3 autofocus
No focus lock went off with movement of camera tried today with fully charged batteries seems ok , batteries yesterday were nearly depleted
Posted by whatsthisbuttondo on 14/07/2014 - 14:35
Hitech Filters - Very useful information
Hi Everyone Do any of you out there have a set of Hitech Filters? I do, the ND Grad 3 filter set, 0.3, 0.6 and 0.9 ND soft grads and very useful they are too. However, being made of resin, they are easily scratched / dulled, so you have to be careful with them and I have made the mistake of not b...
Posted by davidstorm on 17/07/2014 - 00:04
Hitech Filters - Very useful information
Thanks for the tip from me as well! Having got through a couple of sets over the years 'cos I haven't been careful enough, it can get expensive. So back to the old T-cut that I haven't touched for many years now!
Posted by alfpics on 29/07/2014 - 11:31
Digitizing negatives
Hey, I have bellows and a slide copier, tried using them with a 50mm lens, but it gives a 1.5x crop of the negative. Also tried an 85mm and 135mm lens as suggested in many tutorials, but couldn't even get the negative in focus. Is there a way of doing this without having to buy M42 tubes and what n...
Posted by Aleks1298 on 17/07/2014 - 23:22
