Search results for 'back focus' - page 800
smc-Pentax M Lenses
The zoom/focus action on these and similar lenses can be stiffened by tightening the band under the grip via the grub screws. Doesn't always stay working long, though. Threadlocker will help if the screws loosen by themselves.
Posted by iceblinker on 23/07/2009 - 17:56
smc-Pentax M Lenses
Hi Martin I love using the old M and "K" lenses too. Are you using a split prism focus screen ?
Posted by pschlute on 24/07/2009 - 10:57
smc-Pentax M Lenses
M lenses:mrgreen::mrgreen: I just got a M 200mm prime this morning:mrgreen: I have a split prism in my programA.I would love one for the k10 Peter but they seem to be expensive'Katzeyes I think. Also is there a problem with the centre focus point or spot metering when one of these is fitted...
Posted by sanderscapes on 24/07/2009 - 11:11
smc-Pentax M Lenses
Martin I use a cheaper Chinese ebay split-prism screen and it works very well. I dont find it suffers unduly from blackout with slower lenses. Focus point is not affected , but spot metering is, so I tend not to use spot-metering and rely on the histogram/preview more.
Posted by pschlute on 24/07/2009 - 11:43
smc-Pentax M Lenses
I have not tried that screen, but my advice is that if you want to do manual focussing (I do....a lot), then a split-prism will be a much better bet. Any framing errors can be easily corrected in pp, but out-of-focus cannot.
Posted by pschlute on 24/07/2009 - 11:57
Sons Wedding
Definitely the 50mm f1.4 Best lens you own, and you are going to have real quality photographs. Let the professional do his job and get the shots he needs, and concentrate on more artistic viewpoints, and focus / OOF composition. The focal lenght will be lots of fun for the wedding. ...
Posted by nathanever82 on 23/07/2009 - 21:54
Focusing
With regard to the sluggish focus evident on many smc lenses that i have witnessed over the years, does anyone out there have any suggestions on improving focus speed and technique. I have recently purchased a DA 16-50mm which seems to be moderately faster compared to my kit lens and my fixed 35mm F...
Posted by mattox on 24/07/2009 - 15:17
Focusing
I always use centre focus and normally prime lenses, so no major focusing issues. Depending on the situation, I also pre-focus on something near my expected moving target, like the old film days, hold focus and fire when the subject is at or near the prefocused position. Again, depending on the situ...
Posted by smc on 24/07/2009 - 16:46
Focusing
I use centre focus which I lock with a half press on the shutter release before reframing (if necessary) and firing the shutter. It takes less time than focusing manually ever did and just snaps into focus 95% of the time. I wonder what sort of subjects you are shooting and in what sort of light?...
Posted by johnriley on 24/07/2009 - 16:51
Focusing
I think quick-shift focus deserves a mention here. Most DA lenses have a clutched focus ring so you can manually change the focus point even when the camera is set to AF. I have found this really useful when shooting fast moving distant objects, like aircraft and birds. It allows you to get t...
Posted by GlynM on 24/07/2009 - 17:16
Focusing
To clarify, in most recent times, for example, while traveling on a motor bike through the vietnam countryside i found myself having to whip out the camera quickly while moving quite fast on the bike (a difficult situation, i know). Having my FA 35mm lens on board, i tried taking hundreds of candid ...
Posted by mattox on 24/07/2009 - 18:42
Focusing
while traveling on a motor bike through the vietnam countryside i found myself having to whip out the camera quickly while moving quite fast on the bike To be fair, that is asking rather a lot of any AF system! I hope you were riding pilion :shock: Under those circumstances, putting aside that I...
Posted by Pentaxophile on 25/07/2009 - 00:03
Focusing
The technique for candids as you describe is to get in close, set the lens manually to the hyperfocal distance and leave it there. Don't even try to focus under the conditions you describe. I would suggest starting with a fairly wide angle lens (the 21mm or even better the 15mm) set the aperture ...
Posted by johnriley on 25/07/2009 - 00:16
Focusing
The technique for candids as you describe is to get in close, set the lens manually to the hyperfocal distance and leave it there. That's how we used to do it in my press photography days when covering riots. 28mm lens set to f8 and focus distance set to just over 2 metres. Bright line Leitz finder...
Posted by lemmy on 25/07/2009 - 10:28
Focusing
John. Would you use centre focus for macro shots. I find that this can affect the overall depth of focus, or am I doing something wrong?
Posted by thoramay on 26/07/2009 - 12:20
Focusing
Generally I use manual focus for macro shots as I don't want the camera to try and refocus every time I'm ready to make the exposure. If I do use AF, then I still use centre spot and use the Quick Shift to readjust as I require. May I mention that you mean Depth of Field, not depth of focus, whic...
Posted by johnriley on 26/07/2009 - 14:50
Focusing
while traveling on a motor bike through the vietnam countryside i found myself having to whip out the camera quickly while moving quite fast on the bike To be fair, that is asking rather a lot of any AF system! I hope you were riding pilion :shock: Under those circumstances, putting aside that I...
Posted by mattox on 27/07/2009 - 08:01
Focusing
Lemmy that's very interesting I wouldn't have thought of using a viewfinder on an SLR. Just as an aside was it an issue having only 36 shots per roll? Mike No, not really. Most photogs would carry two or three bodies. I'd use 3 Nikon Fs with 35, 28 and 21mm lenses on them. You'd reload in a lull ...
Posted by lemmy on 27/07/2009 - 11:09
Focusing
So definitely get it right first time in the camera. Somewhat different to today I suspect. If you don't mind continuing this - so you shot film, back to the office and that was pretty much the end of it for you? They processed and selected? Mike
Posted by mikew on 27/07/2009 - 11:16
Focusing
John..I am now totally confused. When taking macro using manual focus would you advise Multi segment..centre weighted or spot metering and how does the Focusing Area settings affect this on the K10? I am shooting small insects not much bigger that a thumb nail but the pic is spoilt because the i...
Posted by thoramay on 27/07/2009 - 14:01
