Search results for 'back focus' - page 1366
Pentax-M 85mm portrait lens
I wonder if anyone can advise me on this. I have a K100D and an old SMC Pentax-M 85mm portrait lens. It is a beautiful lens. When I really hit the focus, then the clarity is superb. The difficulty I am having is getting the focus right. My eye is telling me that I'm focusing correctly. S...
Posted by William on 23/08/2008 - 15:20
Pentax-M 85mm portrait lens
I have an 85mm softfocus lens. That's a bugger to focus! make sure your diopter is set right, and trust the green confirmation circle. if yours is the "soft" version like mine, you have to remember that the images get softer towards the edges, so you cannot focus and recompose your shot. You focus ...
Posted by Don on 23/08/2008 - 15:53
Pentax-M 85mm portrait lens
Thanks to both of you for responding. Not sure, however, that I've really got to the bottom of this. I have tried photographing several objects, getting the focus just right at the exact centre of the lens. Both I, and the autofocus were in perfect agreement. And, on the photo, the focus was j...
Posted by William on 24/08/2008 - 12:29
Pentax-M 85mm portrait lens
Your camera could be front or back focusing. Have you tested it with a focus chart. :?: Try this chart.
Posted by Clarky on 24/08/2008 - 12:42
Pentax-M 85mm portrait lens
Your camera could be front or back focusing. Have you tested it with a focus chart. :?: Umm - tell me more. I am, incidentally, very new to digital cameras. You never guessed that, did you? In addition to testing the focusing, will a firmware update help me?
Posted by William on 24/08/2008 - 12:49
Pentax-M 85mm portrait lens
Let's go right back to basics. Focusing is done at open aperture where the image is brightest and the depth of field is smallest, so the slightest movement of the ficusing ring will snap in and out of focus. The eye is only fairly good at this so tests have revealed that the focusing position that w...
Posted by johnriley on 24/08/2008 - 13:19
Pentax-M 85mm portrait lens
Dear John, This is all helpful stuff, and I'll certainly try it. There are a few things, though, that might be worth pointing out: I regularly used this lens with my old ME-Super and never had this problem; I tend to use multiple exposures when taking portraits - a better chance of getti...
Posted by William on 24/08/2008 - 14:18
Pentax-M 85mm portrait lens
William. Generally with the focus chart you lay it flat on a table and set the camera on your tripod, pointing it at a 45degree angle to it. Get the camera as close as you can and focus on the centre line. (i would focus directly on the numbers running down the side of the chart) Fire off a f...
Posted by Clarky on 24/08/2008 - 14:45
Pentax-M 85mm portrait lens
Hi William, firstly the lens you're using is a great piece of glass; I only changed mine when I acquired the faster f1.4 version. You’re right it would cost a lost more to get a comparable lens now, something like the FA 77mm f1.8 Limited (₤529 @ SRS). I have found certainly a lot easier to...
Posted by kerrowdown on 24/08/2008 - 15:25
Pentax-M 85mm portrait lens
I have found certainly a lot easier to get good consistent focusing once a changed the standard focus screen to a Katz eye screen on the K10D. This gives a much more familiar screen like the LX and if I remember correctly the ME Super, a split circle and micro prism ring. This for me gives much more...
Posted by William on 24/08/2008 - 17:48
Pentax-M 85mm portrait lens
I have found certainly a lot easier to get good consistent focusing once a changed the standard focus screen to a Katz eye screen on the K10D. This gives a much more familiar screen like the LX and if I remember correctly the ME Super, a split circle and micro prism ring. This for me gives much more...
Posted by William on 24/08/2008 - 17:53
Pentax-M 85mm portrait lens
The focus chart should be used with the lens wide open. My K10D had a backfocus problem and these are my "before & after" shots of the chart: Before After As you can see in the first shot, despite the autofocus (and my eyes) confirming the thick black line was in focus the camera...
Posted by hefty1 on 25/08/2008 - 00:00
New Body, New lenses.
I have had the same type of conversation with another un-named pentax dealer. Now my question is really on a different level. I wouldn't mind updating to a full frame body, as long as it had the type of 'reduced size sensor' to accomodate also regular APS-C digital lenses, which wouldn't otherw...
Posted by nathanever82 on 23/08/2008 - 19:54
K10D Light Meter
I purchased my first Pentax SLR camera back in 1974, a Spotmatic II, I still have this camera and it is still in perfect working condition (one service only). The light meter on this camera is very accurate. So when it was time to upgrade to a digital SLR, the choice was very simple, a K10D. I have ...
Posted by ChrisR on 24/08/2008 - 16:48
K10D Light Meter
I purchased my first Pentax SLR camera back in 1974, a Spotmatic II, I still have this camera and it is still in perfect working condition (one service only). The light meter on this camera is very accurate. So when it was time to upgrade to a digital SLR, the choice was very simple, a K10D. I have ...
Posted by George Lazarette on 25/08/2008 - 10:00
K10D Light Meter
A frustrated photographer who has to go all the way back to collect it? :?:
Posted by johnriley on 25/08/2008 - 21:32
Jujitsu Photos Finally finished.
hi don, No i was shooting in jpeg , yes! ive since read the manual on setting the white balance manually. Wednesdays session was a fact finding mission for me and a learnt a little bit more. Ill go back maybe in a week or two with the wb set correctly and try to bring the iso down a tad as the po...
Posted by duroo72 on 29/08/2008 - 09:21
Jujitsu Photos Finally finished.
Well George, those funny looking white pyjamas the maritial arts guys wear, often called ghi's. Learn something everyday. Knowing you as I do, I thought you meant something more exotic! G Well George glad to help. I used to study maritial arts. I used to know quite a few Japanese words back the...
Posted by Don on 29/08/2008 - 18:40
Jujitsu Photos Finally finished.
Nowadays, I can't even order food off the menu at a Japanese restaurant without getting slapped by a waitress. Restaurants all have their different ways to entice customers to keep coming back. G
Posted by George Lazarette on 29/08/2008 - 19:36
Pentax/Sigma - lens nightmare
Hi All, haven't posted for ages or been to the site - hope everyone is well? I love my K10 - it is such a well designed tool. Have you ever heard the conundrum about the fox, the hen and the grain of seed at a river crossing - well my nightmare is akin. Here is my problem and would welcome ...
Posted by Bluewhistle on 30/08/2008 - 13:46
