Search results for 'back focus' - page 2067
Sensor flare, tamron SP90
Please excuse the length of this post, but i am wondering if anyone is able to help. I have an adaptall SP90 2.5, a lens that I love using. Perhaps I am sad, but even looking through this lens gives me great pleasure, never mind the images it is capable of capturing. I purchased the lens predomi...
Posted by moose on 11/03/2012 - 13:12
K7 Focus Screen
Have a bit of black "stuff" and what appears to be a very small hair on the focus screen. How do I clean this. Do I need special tools? Any help appreciated.
Posted by tyronet2000 on 16/03/2012 - 09:07
K7 Focus Screen
The Pentax K7 also stands to earn praise from the Pentax fan base thanks . Four interchangeable focusing screens are available. EDIT: (Advertising removed by moderator)
Posted by nanncy123 on 16/03/2012 - 09:22
K7 Focus Screen
Stan, I normally use a 'Rocket' blower ;) EDIT: Pentax User have one such on sale When using such a blower, make sure you pump it hard a few times before using it to blow off the crud in the camera (otherwise you can end up blowing more dust onto the mirror & screen). Whatever you do, do...
Posted by MattMatic on 16/03/2012 - 14:25
K7 Focus Screen
Thanks to all who replied. I chickened out, thinking of my eyes, nerves, how things tend to break in hands for no reason etc., and took it in to a camera repair shop in Newcastle where a kind gentleman did the job for me at no charge ( I put a couple of quid in the lifeboat charity box on the counte...
Posted by tyronet2000 on 16/03/2012 - 15:46
Adapter for old lens onto K5
Hi., By chance the other day I saw a cheap second hand 50mm F1.4 lens in a Camera shop. It is an SMC Takuma 1:1.4/ 50. The shop sold an adapter (Pentax K Mount Adapter) which screws onto the lens so that it can be mounted on the K5. With this lens I need to manual focus and calculate aperture and f...
Posted by slowtour on 17/03/2012 - 07:44
Adapter for old lens onto K5
The operation described is how the Pentax Adapter K is used. It sits flush within the lens mount to maintain infinity focus. There are some third party adapters that don't, but these are often cheap and best avoided because of quality and fit issues. Effectively, the Pentax Adapter K converts the...
Posted by johnriley on 17/03/2012 - 08:20
Adapter for old lens onto K5
If your adapter is like my ones, there is a small screw holding the spring on. It is possible to remove the spring and leave the adapter on the lens. (A little thread lock might be a good idea). Just doing that will mean the lens won't lock into place, so you might want to make a small recess in t...
Posted by petrochemist on 17/03/2012 - 08:39
Adapter for old lens onto K5
Yes Mike like this .But the lens locking button dont help because the lens is narrow barrelled job the contacts the auto focus screw drive and the locking pin are all outside the diameter of the lens ,so if I remove this spring thing the lens is only held on by friction ,thoughts anyone ...jeff...
Posted by jeffstclair on 17/03/2012 - 11:03
Adapter for old lens onto K5
Just one thought: Remove the screw and spring, fit the adapter with a trace of Loctite, fit lens to body and screw in firmly. Leave for a while. now you have a permanently adapted lens. BUT If you don't have an auto/manual switch on that lens, you will have to find a way of locking the iris pin ...
Posted by DoctorJeff on 17/03/2012 - 14:56
Adapter for old lens onto K5
You could use one of the cheap adaptors that have a locking pin recess on them, to get infinity focus you would have to have about .5mm machined off the lens body just above the screw thread, then Locktite the adaptor to the lens.
Posted by HappySnapper65 on 29/03/2012 - 09:13
Adapter for old lens onto K5
Would also agree. I have a cheap M42 adapter (bought before I found out about proper Pentax ones). All the M42 lenses I have fit well and focus on infinity (well the moon anyway) except one - a 200mm x f4.5 Soligor picked up for the princely sum of £6. I took it apart, primarily, to clean the i...
Posted by Frogherder on 29/03/2012 - 16:46
Adapter for old lens onto K5
I have also been following this post with interest. If you get a decent quality flush-fitting adaptor (you don't need to buy the genuine Pentax ones as there are alternatives at a fraction of the price that do fit properly) you won't need a locking pin, especially with a small, light lens like the ...
Posted by davidstorm on 29/03/2012 - 20:50
Adapter for old lens onto K5
I have also been following this post with interest. If you get a decent quality flush-fitting adaptor (you don't need to buy the genuine Pentax ones as there are alternatives at a fraction of the price that do fit properly) you won't need a locking pin, especially with a small, light lens like the ...
Posted by slowtour on 30/03/2012 - 07:21
Why are these images different?
I think it's because you have moved the center of the image down as well as across, the camera is metering for the back of " fire "
Posted by bforbes on 26/03/2012 - 09:31
Why are these images different?
BeachBoy2 was right when he said that in Green mode the camera defaults to Multi-Segment metering. So my spot metering was correctly overruled by the camera. Both pictures therefore had multi-segment metering, which Photo-Me confirms. Is it normal to have this much difference in exposure by chang...
Posted by Frankie on 26/03/2012 - 14:13
Why are these images different?
I hope you can continue to give me the benefit of your advice. I took lots of pictures this morning using my 35mm lens and everything seemed OK. I then came home and took some using the 18-135mm lens. Things seem to be OK at the 135mm end of the lens but I'm getting some odd behavious at the 18mm...
Posted by Frankie on 27/03/2012 - 14:39
Why are these images different?
Is it possible you have set auto-bracketing ot exposure compensation without remembering to switch back? To be sure, reset to factory defaults and see if that solves the problem.
Posted by johnriley on 28/03/2012 - 11:25
Why are these images different?
Is it possible you have set auto-bracketing ot exposure compensation without remembering to switch back? That wouldn't account for the fact that the exif data of the two vastly different exposed photos shows the same exposure. Each exposure of a bracketed set shows the setting used. I would still...
Posted by JAK on 28/03/2012 - 14:03
Why are these images different?
I've phoned Devon Camera's in Exeter, whom I bought it from, and they said bring it back for repair under warranty. The problem was getting worse and worse the more I used the lens while my other lenses were showing no problems at all. I was also wondering if it could have been a software problem,...
Posted by Frankie on 28/03/2012 - 20:28
