Search results for 'back focus' - page 2181
Manual Extension Tubes
I have an un-modded set in front of me now and I had started to photograph each stage of the process to show how the aperture info is not displayed before, and is after.... ...well, step one - testing - the aperture info shows on the back screen in AV mode and I can set the aperture from the came...
Posted by JAK on 26/11/2016 - 11:07
Manual Extension Tubes
algernon's link to the Kenko one had me searching Ebay and these are all over it . how they compare i'm not sure but may be worth a punt http://www.ebay.co.uk/itm/KOOKA-KK-P25-Copper-Macro-Extension-Tubes-Auto-Focus-Close-up-Image-for-Pentax-/112198102289?hash=item1a1f872d11:g:sBEAAOSwXeJYIeu6 S...
Posted by Algernon on 26/11/2016 - 13:11
K1 and beep
Focus hit? If not when does it beep :?: Otherwise could it be when you're walking backwards to frame a shot to warn others nearby of your presence? :)
Posted by JAK on 15/12/2016 - 15:53
K1 and beep
I think I may have solved it, or a least cured it. I had a single flu card in the camera. I replaced it with a pair of SD cards and it doesn't beep. Strangely though it doesn't bleep now when I put the I put the flu card back in. maybe it was the flu card trying to make a connection.
Posted by Froggy on 15/12/2016 - 19:13
K1 and beep
Sitting in a hide with some upthemselves Canon users I realised I was the only one bleeping when in focus. Found out how to turn it off later.:oops:
Posted by RobL on 15/12/2016 - 22:37
K5 lens release button broke
Lens release button just fell off while I was taking pictures.. Has anyone else experienced this? The e-clip at the back of the button has fallen off. I have done a thorough check of the button shaft and all the groove edges are still sharp, so I cant see why it should have fallen off. Just like t...
Posted by pipinmels on 26/12/2016 - 13:40
Electronic shutter on K1
Still getting to know all the features on the K1, I was experimenting with a 2x teleconverter and DA*300mm lens. The lens was firmly anchored on a Gitzo basalt tripod with centre ball head, and using a remote (SR off) I took some shots of a building about 100 feet away. I used live view to focus at...
Posted by pschlute on 02/01/2017 - 19:27
Electronic shutter on K1
Did you get the autofocus indicator in the viewfinder? The other day with a temperature around zero the focus squares in the K-1 came on but no red flash, and pictures were not sharp. I thought I was too close so moved back, tried three different lenses but got the same result. Back home everything ...
Posted by RobL on 02/01/2017 - 22:16
Electronic shutter on K1
The red flash does not indicate correct focus, just the point being focused on. The green hexagon at the bottom of the frame should be steady, not flashing, which indicates focus has been achieved.
Posted by johnriley on 02/01/2017 - 23:06
Electronic shutter on K1
The red flash does not indicate correct focus, just the point being focused on. The green hexagon at the bottom of the frame should be steady, not flashing, which indicates focus has been achieved. I should have said the red flash from the focus frame which coincides with the green hexagon and bleep...
Posted by RobL on 03/01/2017 - 08:19
Electronic shutter on K1
Am I right to understand that the physical shutter is open for some period prior to an exposure being taken with the electronic shutter feature? The only other thing to ask is what was the length of time between raising the mirror and releasing the shutter when using a normal 'mirror up' techniq...
Posted by pschlute on 03/01/2017 - 09:19
Electronic shutter on K1
I can't be certain, but to me the problem with pic1 looks more like poor focus than camera shake as it's fuzzy all over and not sharp at all. Whether its front focussing or back focussing I wouldn't like to say. Have you tested the lens for this? A similar shot at an angle might indicate a point o...
Posted by JAK on 03/01/2017 - 21:23
Electronic shutter on K1
I don't think No.1 is poor focus, it looks exactly like camera shake to me. You simply cannot get away with 1/30 second, even on a tripod, when using a 300mm lens and TC, unless there is absolutely zero movement of the equipment. Shutter is very likely to have caused it I would have thought, I t...
Posted by davidstorm on 03/01/2017 - 22:36
Electronic shutter on K1
Extensive testing was done about shutter blur on the K-7 and a little bit on the later K-5. A lot of the problems were fixed with the K-5. See the top graph.... http://blog.falklumo.com/search/label/shake%20reduction Stay clear of speeds between about 1/40th and 1/125th with a K-7 :shock: See ...
Posted by Algernon on 04/01/2017 - 12:16
Chromatic aberration/ the fringe
Some of you will realise that i've not been on the forum for some time. The reason being that i left the Pentax fold after a 38 year relationship and am reasonably happy where i am though i'd like to return via the K1. My last and the camels back breaker was the K3's sensor which suffered terribly...
Posted by hebridean on 07/01/2017 - 20:10
Chromatic aberration/ the fringe
Thanks for your reply John but I'd only ever encountered it once with the k5 using a m28mm f3.5 and never with the k200 also using a 16-45mm. The k3 displayed it using the 16-45 which I replaced with the 16-85 and it was worse. Reasearch also lead me to conclude that it was indeed the sensor and not...
Posted by JAK on 08/01/2017 - 11:02
Chromatic aberration/ the fringe
Chromatic aberration (fringing) is something that appeared with the digital camera era. Films contains three different layers which are sensitive to the three colors used to reproduce the spectrum we are able to see. These three layers are superposed in such an order as to compensate almost per...
Posted by pentaxian450 on 09/01/2017 - 02:43
Chromatic aberration/ the fringe
Telephoto lenses in particular have always been prone to CA, even on film. The first apochromatic lenses that tackle this go back a very long way and the Voigtlander Apo-Lanthar of the early 1950s is still regarded as a good performer.
Posted by johnriley on 09/01/2017 - 09:55
Failed Shutter button.....
Does the back button shutter work? Have you double checked all the settings, including the menu options for the shutter button? I have been caught out when the shutter is set only to release when in focus.
Posted by RobL on 22/01/2017 - 22:16
Advice please :)
Here's a couple I took with the K5 and Sigma 150-500 My first attempts were not very successful but I found not using the 'machine gun' technique improved thing considerably. I agree with Chris........It comes down to technique. After all, people were able to capture birds in flight usin...
Posted by michaelblue on 31/01/2017 - 08:34
