Search results for 'back focus' - page 1249
focusing problems
A zoom lens that retains the focus setting throughout the zoom range is termed para-focal I thought the zoom that retained its focus was a parfocal lens, and one that doesn't is a varifocal. In practice, a two ring zoom is easier to keep in focus as you zoom - trombone types can be very diffi...
Posted by johnriley on 27/06/2005 - 20:30
Pre-focusing and shutter locking on *istDS
I want to be able to pre-focus on a particular spot to await a moving object/person arriving at the spot, but I would like the shutter release button to be locked so as to be unable to be fired until the object is passing the through the focussed spot. I feel that there must be some camera setti...
Posted by owdsnapper on 29/06/2005 - 11:48
Pre-focusing and shutter locking on *istDS
Keeping your finger on the button is the only way I know. I've pondered this too. Sre you thinking there should be a focus equivalent of exp lock button? would be handy.
Posted by downswood on 29/06/2005 - 23:11
Pre-focusing and shutter locking on *istDS
You could try the following: Use a manual focus lens, but set the camera on AF Focus on the place you want. Press and hold the shutter release - when something appears at the pre-focused spot the shutter should release.
Posted by johnriley on 30/06/2005 - 00:10
Pre-focusing and shutter locking on *istDS
I have adapted my old cable switch F for my istD this has a lock on it so extending John method of using a manuel focus lens. You can lock the shutter release on and even leave the camera and as long as the battery holds out and it will fire when something or someone comes into focus. The adaption...
Posted by David Benson on 01/07/2005 - 09:36
Pre-focusing and shutter locking on *istDS
You could try the following: Use a manual focus lens, but set the camera on AF Focus on the place you want. Press and hold the shutter release - when something appears at the pre-focused spot the shutter should release. As far as I'm aware, this method (called trap focusing) is available on...
Posted by mattie on 01/07/2005 - 14:13
A dopey question about lenses
Thanks for the reply. I just came back from vacation and tried it, but did get the vignetted corners you mentioned. Oh well, it was worth a try. Thanks for replies John and Matt. Christine
Posted by Anonymous on 24/07/2005 - 06:30
*istD battery drain mystery
I bought the MicroDrive only because it was bundled with the camera at half the price of a solid state card and that was back in the days when an *ist D and a few accessories added up to £1600 - so I spoiled the ship for best part of a £100's worth of tar. :oops: I wouldn't buy one again and I ...
Posted by malcolmk on 05/07/2005 - 19:20
Why Raw?
Dave, The whole thread is "Why RAW". You are correct that JPG is processed by the camera, and it's quite possible that the PC software bears some resemblence in terms of quality and algorithm. However, as P1C1 shows there are better, more sophisticated algorithms that do require a lot more computin...
Posted by MattMatic on 18/07/2005 - 21:20
Why Raw?
Yes Matt, I agree with you and I guess this is yet another reason why it is best to use RAW. I am using a slow PC, 850MHz AMD with 684 meg of RAM. I am using PS CS with the RAW converter and find it perfectly adequate for my needs. I have just timed it and it took 28 seconds to covert a file into...
Posted by Anonymous on 19/07/2005 - 09:29
Why Raw?
Going back to the basic question about RAW capture, I will try this soon to see what difference it makes to my A3 prints. I presume that if I was only making images for web use or small prints then any advantage would be wasted?
Posted by johnriley on 19/07/2005 - 19:34
Why Raw?
Matt, Sorry to bring this subject up again, but I have been giving CaptureOne a try lately. At first, I was simply amazed with C1's abilities. But after giving it a better look, I found that C1 simply eliminates some detail, comparing the preview with the focus tool results... my greens turn t...
Posted by Flink on 16/08/2005 - 23:05
Why Raw?
Flink, The general idea is that you work down the tabs from top to bottom. So, first off, get the White Balance right! Don't rely on auto for this. Select one from the drop down list, and tweak it manually if necessary. This is where all the colour gets changed ;) Secondly, go to the Exposure t...
Posted by MattMatic on 17/08/2005 - 06:45
Why Raw?
Thanks Matt! If you want to see what I'm talking about when I speak of color detail loss, check out this three pics: http://formula9.net/files/p1c1test.zip The photo was just a test and is not even in focus, but it serves my purpose. The first shows the Focus panel still in preview while ca...
Posted by Flink on 18/08/2005 - 23:09
Why Raw?
I am so very bored with RAW. I want to use RAW, but the only obvious way to go (Photoshop CS) costs $899, which is outrageous considering the size of the market. As for the alternatives, I've tried most of them, but they all seem to have some fatal flaw. They all have unintuitive user interface...
Posted by George Lazarette on 19/08/2005 - 21:00
*ist DS locked up.
I had a strange thing happen with my *ist DS yesterday and I wonder if anyone else has had a similar experience. I was using RAW and had taken shots over a period of several minutes but not continuous shooting when for some reason the camera locked up which is strange as I had not changed anythi...
Posted by Anonymous on 18/07/2005 - 15:11
good close up lens ist*D?
I dropped my ist*D and lens while on vacation and there was damage to both. I sent the camera to Pentax for repair, but my close-up lens is close to 25 yrs old and they can't repair it. They do not make this lens anymore. It is a Vivitar series 1, 52-105 macro telephoto F2.5 lens. It was a wonde...
Posted by Ava on 25/07/2005 - 22:15
Pentax *ist ds kit lens focal length?
The lens is 18-55mm no matter what. If you put it on a 35mm film camera, it will still be 18mm but won't cover the entire frame, so the edges wil be cut off. Put it on a 110 camera and you've got a telephoto zoom. But it's still 18-55mm, no matter what. I use a 127mm lens on my RB67, but the...
Posted by Arthur Dent on 28/07/2005 - 02:14
Pentax *ist ds kit lens focal length?
Focal length hasn't confused medium fornat users; you get used to what lens does what on the format you're using. Having an RB67 means I need go know what a lens will do on a 6x7 back and also on a 6x4.5 back. It's not like the lens magically turns into something else, it's just that the 6x4.5...
Posted by Anonymous on 28/07/2005 - 15:07
360FGZ pre-flash really slows the work flow!?
Hmmm. You can and you can't ;) I'll have to get back to you on this because the answer is not simple, and I better try it out for real first :D Matt
Posted by MattMatic on 02/08/2005 - 17:10
