Search results for 'back focus' - page 1645
Infinity focus setting DAL 18-55 Supplied with KR
There's something you're missing- most lenses will focus past infinity. This is for a number of reasons- mainly it's because it's difficult to calibrate a lens so that the stop is exactly on infinity focus, partly it's because lens components can expand in heat so shifting the infinity focus poi...
Posted by timothyw on 02/11/2011 - 13:27
Infinity focus setting DAL 18-55 Supplied with KR
As timothyw explained. The missing distance scale is possibly even a bigger drawback on DA-L lenses than the missing lenshood (as the latter can be solved easily). You found one issue, playing with hyperfocal distance is also a problem. Even the more expensive DA18-135 does not seem to have a ...
Posted by sterretje on 02/11/2011 - 16:06
Infinity focus setting DAL 18-55 Supplied with KR
Ah well, its back to leaving on autofocus, or just keeping the 28mm SMC on! Thanks to all for your info
Posted by RMURPHY195 on 13/11/2011 - 18:32
Infinity focus setting DAL 18-55 Supplied with KR
The DA L 18-55mm lens is excellent optical quality (take a look at the pictures by morpheus71 in the gallery). Not sure if this is relavant but i have recently purchased a K-x with kit lens 18-55 DAL 3.5-5.6 When using manual focus i found the same and have found a slight tweak to the left (i th...
Posted by davidstorm on 13/11/2011 - 23:13
Infinity focus setting DAL 18-55 Supplied with KR
... The recommendation above is not necessarily correct as the DA L version is optically identical to the DA version. ... Which is not 100% correct to my knowledge ;) The DA version is the first generation, the DA II / DA-L / DA WR are the second generation with improved optics.
Posted by sterretje on 15/11/2011 - 12:12
Infinity focus setting DAL 18-55 Supplied with KR
Ah well, its back to leaving on autofocus, or just keeping the 28mm SMC on! Thanks to all for your info Well, you could run your own test... I have just checked the 18-55 DAL that was fitted to my own K-x, using some leafless trees about 100 yards away as 'near-infinity'. Set to midpoint (35mm) ...
Posted by OldTaffy on 15/11/2011 - 15:20
Infinity focus setting DAL 18-55 Supplied with KR
An afterthought: I can recommend karma mechanic's method for . It was in the Lens Fine Tune Adjustment thread, on 21/07/2011. Martin
Posted by OldTaffy on 15/11/2011 - 15:47
Shake reduction battery drain
When Pentax first introduced SR in their cameras (Ithink it was the K100D), I remember reading in the AP review that switching this feature on, it was on the back of the camera then, had a big influence on battery drain. I am wondering if this still applies. Does anyone have a answer to this? ...
Posted by Photoaddict on 05/11/2011 - 11:20
Lens Hood for Pentax K-R DA-L lenses
Just a word of caution about Ebay fixed hoods - I bought one for my 18-55 but there is major vignetting between 18-25mm. It was listed as an 18-55mm hood but pretty much useless for wide angle. I have now bought a colapsable rubber hood (again from Ebay!) which is much more practical. Still vignette...
Posted by bernado on 05/11/2011 - 22:25
Lens Hood for Pentax K-R DA-L lenses
Thanks a mil for your reply, MILAMBER. Yikes, it's rainy season here in KL in December ... not sure if it's going to be flooded like in Thailand/Bangkok or not though .... heheheh. Too bad we won't be able to meet when u come over to KL in mid-Dec, cos I'll be in Yangon, Myanmar from Dec 6-24, fo...
Posted by milamber on 10/11/2011 - 11:44
Lens Hood for Pentax K-R DA-L lenses
*** MILAMBER *** Oops! If after Myanmar, I won't be in KL, cos I'll only be back to KL on Dec 24. Another time, another place then. You have a wonderful holidays too! :):)
Posted by thimfook_law on 10/11/2011 - 13:05
Image quality of a K-5 vs a K-r
If you give me a week or two I might be qualified to comment on this. I've had a K-R since about June/July sort of time, and last weekend picked up a K-5. The K-R is an excellent camera, and if prices were still where they were back then, I might well have picked up another K-R. As it stands howe...
Posted by timothyw on 08/11/2011 - 11:10
K10 D Focus Mode Lever
I recently broke off the plastic focus mode lever on my K10D when removing the camera from its case. I disassembled the case as per manual in order to replace the lever. I've taken the broken switch out & am temporarily using the camera on manual focus. There was a tiny ball bearing loose in the bot...
Posted by pollyrobby on 07/11/2011 - 22:22
K10 D Focus Mode Lever
Brave man! Sometimes the click's on lens aperture rings are provided by a ball bearing pushed by a spring. They may use the same arrangement to give the clicks to the focus mode switch. Just a guess but it may work the same way and would have dislodged when the switch was removed.
Posted by doingthebobs on 07/11/2011 - 23:26
K10 D Focus Mode Lever
Thanks Bob. The "ball bearing" is so tiny it could even be a rogue blob of solder. I will dismantle the donor camera, paying very careful attention to the presence of any "ball bearings" in the vicinity of the focus mode switch. Thanks once again.
Posted by pollyrobby on 08/11/2011 - 11:06
K10 D Focus Mode Lever
Looking at the 'exploded parts diagram' there isn't a separate ball-bearing, but it might be part of the switch and got dislodged by the breakage.
Posted by karma mechanic on 08/11/2011 - 21:10
K10 D Focus Mode Lever
http://i1181.photobucket.com/albums/x425/pollyrobby/SG1065671.jpg Using the donor camera,I discovered that the small ball bearing nestles between a small hole in the end of the metal lever of the switch & the camera body. It's a very crude arrangement IMHO, but it works. Using the service manual,...
Posted by pollyrobby on 11/11/2011 - 15:12
K10 D Focus Mode Lever
At least you know where it came from now and it didn't drop out of somewhere else important!!
Posted by doingthebobs on 11/11/2011 - 21:43
AF microadjustment
Does any one around here really understand why this is needed? Because if so, I would dearly love to understand a number of things. Firstly, and most importantly, how can the way the AF system works out whether the image is in focus or not, give a different result for different lenses? I co...
Posted by ChrisA on 08/11/2011 - 18:36
AF microadjustment
You just have to accept that it's true :shock: It baffles me as well especially with manual focus lenses :cry: Contrast AF under Live View seems very accurate and unaffected by the AF microadjustment (K-5) Make sure any tests that you do are under daylight.
Posted by Algernon on 08/11/2011 - 19:27
