Search results for 'back focus' - page 2133
connection time out
The internet can be full of annoying glitches, but PU hasn't been a problem from here for a long time. Some pages can time out, but usually when looking at some other part of the site and then using the back button. To be honest, I tend to just click on the Pentax User Forum tab rather than using th...
Posted by johnriley on 07/03/2017 - 11:04
Sigma 150-500 on Pentax k70
[quote:3496ace15f="michaelblue"]How does one update a lens?? With one of these: http://www.ebay.co.uk/itm/Sigma-USB-Dock-UD-01-PA-for-Pentax-Fit-Lenses-/361861828332?hash=item5440a54eec:g:2GIAAOSwo4pYXndM As to whether updates are available for the lens I cannot make sense of the Sigma website to f...
Posted by JAK on 13/03/2017 - 19:48
Sigma 150-500 on Pentax k70
Im having a problem with the 150-500 on a k3. Worked fine on the k5, but it wont lock focus on the k3. Just keeps hunting and when it does "lock", its nowhere near in focus. I contacted sigma, they said what the fault was likely to be, but i cant remember the exact term they used. Its possibly a ba...
Posted by scarr1 on 13/03/2017 - 23:00
Sigma 150-500 on Pentax k70
I agree that Sigma in the UK are generally very helpful and sometimes don't charge the full Band charge - repaired my very old 100-300 F4 a couple of years ago for about 1/2 of the full one when a focus-related PCB failed (they got the parts from Japan - which surprised them as well as me!). You rea...
Posted by jeallen01 on 14/03/2017 - 08:14
K-5 Knocking - Mirror Problem?
You could do with someone hearing it, it's hard to say any more without that. Is the camera shop still there in Stafford? I wonder if they could advise you. If it's a fault though there's only one way to sort it - back for repair. JPS are the official repair house. If you do send your camera t...
Posted by johnriley on 20/03/2017 - 15:12
M and A lenses with HSS flashes on K1
yeah I see what you mean, it's actually a normal use case, you want to be able to control the ambient light so it's even one stop less than your flash light. I was thinking to do it automatically though (using an exposure correction of -1), but I guess I can live with the exposure bar inside my view...
Posted by sebas77 on 10/04/2017 - 09:22
M and A lenses with HSS flashes on K1
There's almost no known documented technical details on the P-TTL metering system, but the information used to help the pre-flash determine correct flash exposure includes aperture, ISO, focal length and active focus points. The pre-flash fine tunes this by taking into account the amount of light re...
Posted by McGregNi on 10/04/2017 - 14:36
M and A lenses with HSS flashes on K1
Maybe we don't need to use the green button ...? It is really a way to reset parameters to their default positions. In this case of ambient light metering in M mode that will probably just be the 'program line' defaults .....but I hope someone with more knowledge of this sort of camera feature will ...
Posted by McGregNi on 10/04/2017 - 15:37
M and A lenses with HSS flashes on K1
Well OK, it's not totally off topic, so I continue here. I need an advice on a lens and then I have a question on the cactus. So, I loved the idea to use only prime lenses for portrait. I really enjoyed a session that I did just with a 50mm on the K1. I have also a 35mm (M) and the 105mm (A) and ...
Posted by sebas77 on 10/04/2017 - 19:43
M and A lenses with HSS flashes on K1
Firstly, I think a 70-200mm F2.8 lens (any of them really!) would be a superb choice for HSS portraits .... great versatility with focal length, they're sharp, even at wide apertures, and render backgrounds nicely OOF. If I had the money that's exactly what I'd have for outdoor dynamic portraits, co...
Posted by McGregNi on 11/04/2017 - 07:05
M and A lenses with HSS flashes on K1
OK, I will read your guide and come back to this, there is something I still don't get, but before to try to formulate it, I need to understand it. Sorry about being too difficult, but it's in my nature to need to understand how something works to be able to use it (it must be because I am a program...
Posted by sebas77 on 11/04/2017 - 11:32
M and A lenses with HSS flashes on K1
.....- In your guide you say you are not sure why the exposure time is taken in consideration in the equation. To be honest, for me instead is not clear why the focal range is taken in consideration.the flash as well? ..... In the flash manuals there is a reference to additional shutter speed info...
Posted by McGregNi on 14/04/2017 - 13:39
M and A lenses with HSS flashes on K1
Yes, try it out by all means. The reason that radio HSS is so sought after is that the liimitations of optical triggering are really challenged in typical HSS situations , ie outdoors in bright light. I manage with optical triggering fine, but I'm careful to place the sensors facing the control ...
Posted by McGregNi on 16/04/2017 - 14:52
K3II Battery Drain ?
Neil, I have dabbled with the astro tracer, it's just a matter of waiting for right time right place to give it another go, was caravanning just outside Penrith a few weeks back, away from light pollution etc, but some idiot forgot to take a tripod :D Andy, good thinking, I'll turn it off and ju...
Posted by fatspider on 19/04/2017 - 12:23
mx-1
Friend has mx-1 on av, tv , manual when she presses shutter to focus it seems so achieve focus for split second then shift off it but if she puts camera into auto its fine , has anyone got any ideas what is wrong. She bought it from Japan about6 months ago but has only tried it now due to problems a...
Posted by whatsthisbuttondo on 03/05/2017 - 16:07
mx-1
Friend has mx-1 on av, tv , manual when she presses shutter to focus it seems so achieve focus for split second then shift off it but if she puts camera into auto its fine , has anyone got any ideas what is wrong. She bought it from Japan about6 months ago but has only tried it now due to problems a...
Posted by JAK on 03/05/2017 - 23:50
mx-1
This might assist!! If the focus area is circular (tracking) , go to the menu. Select AF Setting. In Focusing Area select the top rectangle option and save.8)
Posted by oldhat on 04/05/2017 - 09:34
Exposure problems with Irix 15mm lens
I would appreciate comments on the following problem encountered using an Irix blackstone 15mm f2.4. Occasionally I get gross overexposure using this lens. I have tried it on a K1 and K3 with the same results I have been testing it with Av and M exposure modes. - generally matrix metering. The l...
Posted by phb on 06/05/2017 - 14:59
Exposure problems with Irix 15mm lens
I would appreciate comments on the following problem encountered using an Irix blackstone 15mm f2.4. Occasionally I get gross overexposure using this lens. I have tried it on a K1 and K3 with the same results I have been testing it with Av and M exposure modes. - generally matrix metering. The l...
Posted by ozzrod on 04/06/2017 - 09:29
Exposure problems with Irix 15mm lens
My IRIX 15mm Blackstone is back from warranty repair! The fault was a poor internal electrical link within the lens mount. It took only 3 weeks and two days for my lens to be picked up at my home by DHL, shipped to Korea by Air Express, assessed and repaired, and air expressed back to me in Austr...
Posted by ozzrod on 03/07/2017 - 10:17
