Search results for 'back focus' - page 2032
Pentax K7 Unsharpness
John - thanks for the link - interesting article. No problem, it's a bit of an eye opener:shock: The following has put me right off buying a Sigma 120-400: "The Tamron 70-200 f2.8 is joining the Sigma 120-400 and 150-500 (45% failure rate) in the Lensrentals Hall of Shame: lenses we no longer ...
Posted by JonSchick on 29/06/2010 - 17:05
Pentax K7 Unsharpness
Is there a thread or article that someone can point me to that will explain as to a fool how to check your (focus plane) and then if needed change it. How do you check for 'back' focus or 'front' focus. Many thanks.
Posted by Thordell on 29/06/2010 - 22:00
Pentax K7 Unsharpness
I have had some good photos with it but is was so inconsistent with focus and and exposure issues I got fed up with it, in no way have I ever considered the camera defective Eh? :roll:
Posted by Oggy on 30/06/2010 - 00:32
Pentax K7 Unsharpness
Is there a thread or article that someone can point me to that will explain as to a fool how to check your (focus plane) and then if needed change it. How do you check for 'back' focus or 'front' focus. Many thanks. For example article?
Posted by terje-l on 30/06/2010 - 13:31
CPL and 40mmLtd
OK not a problem yet - but it may well be soon Now I love my little 40mmLtd and have got a Hoya CPL for it . This is indeed a 30.5 filter which is screwed into the hood - can do that - a wee bit fiddly thanks to my hands but it's possible. Now for the problem - I understood that with a CPL ...
Posted by techno-terminator on 05/07/2010 - 09:10
HOYA pro 1 digital filters MC UV(0)
I have just had the glass drop out of one of the above, no idea why! The only other ones I have of the same make are CPLs, so probably different construction. The glass appears to go in from the back, should there be some retaining spit ring or should the glass be cemented in? Anyone have o...
Posted by gartmore on 06/07/2010 - 13:10
K10 focusing issue
I am having focusing problems with my K10. It is front focusing. Auto focus no longer gives a sharp picture. I need to manual focus. I need to look for the yellow light confirmation then refocus forward until the light just blinks. I then get a reasonable result. I believe that there is a th...
Posted by thoramay on 15/07/2010 - 08:11
K10 focusing issue
Have a read through this for adjusting the K10D Auto focus using a debug mode. You will also need to set up a focus chart,hope that helps.
Posted by tomkeet on 15/07/2010 - 09:18
Stuck Aperture
I gained a Sigma 105mm Macro lens at a ok-ish price off , on the basis that although it was advertised as having an aperture dial that didn't work in manual mode "it worked fine on all DSLR's". Fine I thought, that didn't worry me because I'd never want to set it on the ring anyway. Sadly, it wo...
Posted by flossie on 17/07/2010 - 18:33
Stuck Aperture
Just to follow this up : Took it into the local shop, they said its not fixable by them and would have to go back to Sigma at a cost of c.£100. Contacted the seller, who has agreed to take it back. Thanks all for your comments, my half-hearted occasional search for a cheap macro lens continues :)
Posted by flossie on 20/07/2010 - 09:08
Stuck Aperture
Contacted the seller, who has agreed to take it back ... T ... so he can relist it and find another buyer who not complain.
Posted by polchraine on 20/07/2010 - 10:00
Stuck Aperture
Final (?) Update : I got a message back from the seller this evening, saying that a camera repairer has now put a new spring inside, and it now works in "A" mode (I only posted it back yesterday!). I've been offered the lens again if I want it, but I think I'll pass now, feeling a bit doomed with te...
Posted by flossie on 21/07/2010 - 22:28
Focus point
I took some photos yesterday for a freind of a litter of pups he had. In this photo I tried to get the pups as close toegther as possible and I think I focused on the nose of the pup on the left. were would you consider the best point of focus or technique in this situation. Ian
Posted by philstaff on 18/07/2010 - 12:17
Focus point
eyes or nose, hopefully with enough DOF to get both in. looks like you had limited light too maybe bounce overhead flash to help with a smaller aperture? I leave on centre focus point, focus on nose, half press and swing back to centre for shot. Or use manual focus and listen for the beep as it...
Posted by dougf8 on 18/07/2010 - 12:42
Focus point
Eyes always for a portrait. If the eyes are sharp, you've hit the spot. Centre focus, lock on one eye (they are all pretty much in the same plane here) hold and recompose. Use Quick Shift to fine tune if necessary.
Posted by johnriley on 18/07/2010 - 12:51
Focus point
John could you elaberate on quick shift Im not realy familiar with the term thanks both for the input. Ian
Posted by philstaff on 18/07/2010 - 13:50
Focus point
Quick Shift is the feature on most Pentax DA lenses that enables a manual focus tweak after the AF has locked, without having to switch anything into manual focus. It's especially useful in close up and macro work.
Posted by johnriley on 18/07/2010 - 14:45
Focus point
a manual focus tweak after the AF has locked If you disable AF with half press of the shutter you don't need to have a lock and you can use the AF button on the back to auto focus. So you can manual focus all the time and have AF with the AF button.
Posted by Anvh on 18/07/2010 - 16:00
Focus point
I don't see the advantage of that Stefan, when there's a perfectly efficient method as described. Maybe in some situations that I never come across.
Posted by johnriley on 18/07/2010 - 16:08
Focus point
The advantage is you don't need an AF lock to release the shutter. You can use MF all the time or when AF overshoots go to MF and take the shot without a lock on. Or with the situation you describe for portrait. AF on the eyes - quick-shift to fine tune the focus - release the shutter. You c...
Posted by Anvh on 18/07/2010 - 16:26
