Search results for 'back focus' - page 781
DAs Versus Kit
[quote:3496ace15f="lemmy"]I am beginning to lose the will to live here! I am satisfied that the focus is not out. Both the kit lens at 35mm and the DA at 35mm were on auto-focus for these shots. If one is out, would the other not be? The phase detection focus unit is in the body, after all, not i...
Posted by nathanever82 on 26/05/2009 - 18:27
DAs Versus Kit
I'll chip in and and say I agree with Nathan, it looks to me that your camera's focus is off on the Primes, the 15mm being worst..... sorry :(
Posted by Greytop on 26/05/2009 - 18:49
DAs Versus Kit
"Real world pic of neighbour's house, da 15 f4 at 100% near centre" This one looks really poor..... It must improve quite a bit on stopping down? I can't see there being a focus problem with these due to the depth of field on 15mm and 35mm lenses. When testing lenses like this it's essentia...
Posted by shim on 27/05/2009 - 08:16
DAs Versus Kit
I'm sorry to upset you Nathan. I'll take the pictures down if you wish, no problem. Shim, the picture was taken on a tripod, mirror up dekayed action at 1/1500th or so and fired with the Pentax remote. So Greytop, what you're saying is that my camera focusses correctly with the kit lens but no...
Posted by lemmy on 27/05/2009 - 14:27
DAs Versus Kit
Lemmy, I am not upset by your pictures, I am upset by your mis-understanding of what i've been trying to explain to you. FIrst of all, cameras like the K20 have INDIVIDUAL FOCUS ADJUSTMENT FOR EACH LENS. And therefore, yes, as you say, "it is reasonable to expect a photographer to do this"!!! ...
Posted by nathanever82 on 27/05/2009 - 14:48
DAs Versus Kit
Lemmy, as an example... I have individual focus adjustments set for my DA*16-50 and my FA 50 (they are both quite different). My DA* 60-250 did not need an adjustment. BTW these are settings in my camera, not the lenses. Three lenses three different focus adjustments, that's my experience :)
Posted by Greytop on 27/05/2009 - 16:08
DAs Versus Kit
Lemmy, as an example... I have individual focus adjustments set for my DA*16-50 and my FA 50 (they are both quite different). My DA* 60-250 did not need an adjustment. BTW these are settings in my camera, not the lenses. Three lenses three different focus adjustments, that's my experience :) ...
Posted by stevejcoe on 27/05/2009 - 16:59
DAs Versus Kit
So this focus adjustment is necessary with manual focussing as well? I simply find it hard to believe that if I see a sharp image on screen (with all my lenses) and they all show a sharp image when tested against the ruler, that somewhere there is a focussing problem. I must say that after a lifet...
Posted by lemmy on 27/05/2009 - 18:38
DAs Versus Kit
Leicas don't have a pentaprism Lemmy, they have a rangefinders. In any DSLR or SLR with a pentaprism, what you see in the viewfinder whilst focusing, is the image reflected from the mirrors IN FRONT of the sensor. Therefore there can be a discrepancy between what you see in the viewfinder (or wh...
Posted by nathanever82 on 27/05/2009 - 19:12
DAs Versus Kit
Isn't the simplest thing Lenny can do is buy a K20D and configure each lens? In days of film keeping the wretched stuff flat in the camera was always a challenge. I can recall applying a microscope to Leica and Nikon negatives and being impressed by the detail you could see but I don't recall doi...
Posted by mikew on 27/05/2009 - 19:45
DAs Versus Kit
Well, I thank everyone here for their help. I have worked for some of the greatest mags and newspapers in the world, was Paul McCartney's photog for two years and never had focus issues. What kind of living would I have made with out of focus pictures at this level? I now find that I have a camera ...
Posted by lemmy on 27/05/2009 - 21:00
DAs Versus Kit
I think you're a little harsh and are a victim of the new technology. I am sure that there were many cheaper and less well engineered cameras that didn't focus as well as Rolleis, Hassleblads and Leicas in their day but we didn't have the technology nor inclination to be quite so investigative. I...
Posted by mikew on 27/05/2009 - 22:18
DAs Versus Kit
What a commotion. :| Lemmy download a foucs test chart and simply try out how the focus is. When looking at the photo of the ruler it looks like the focus is alright though to be honest. It's just very strange that more expensive primes doesn't preform better then a "simple" £60 zoomlens, I hope...
Posted by Anvh on 27/05/2009 - 23:34
DAs Versus Kit
I do feel cheated - I spend £1000 on lenses which I cannot just fit on a camera body and use to their capability without being a technical expert. It's true that I'm not buying to the same standard as when they were tax allowable for me but having come back in to photography after a few years, I ex...
Posted by lemmy on 27/05/2009 - 23:42
DAs Versus Kit
anvh, to answer your comment, I'm so p***** off with my gear that I don't even want to put the lens on the camera again. I can tell you that at f8 it's a different lens. But so is the kit....There aren't many lenses that are no good at f8. I've paid out over £500 for a lens I can't focus and whose...
Posted by lemmy on 27/05/2009 - 23:48
DAs Versus Kit
Lemmy focus isn't probable your problem simple get to know your lens better. Limited are great lenses and also very small and that also comes with some cost of course so sharpness isn't the best wide open but stopped down. Then also the bokeh and other aspect of the lens comes into play, sharpness i...
Posted by Anvh on 28/05/2009 - 00:04
DAs Versus Kit
Lemmy I would do some focus tests with your prime lenses first. My experience with auto focus is that every lens is slightly different. Many do not always achieve "perfect" focus first time. Some lenses will select a slightly different focus in consecutive tests. I use a split prism focus screen ...
Posted by pschlute on 28/05/2009 - 09:11
So What Would You Do if You Were Me?
So where do i go from here then guys if the shoe was on your foot? Lots of tests have been done now and its pretty obvious that once again there are issues with some or all of my gear. 50mm f1.4 improves greatly at -10 Focus Adjust but still seems to be begging for more. 16-45 - seems to wa...
Posted by CraigF1969 on 24/05/2009 - 08:31
So What Would You Do if You Were Me?
Having rad your various posts I'm not sure if you have successfully used the in camera adjustments to get any/all lenses sharp. I thought you could get at least one to focus sharply and reliably. So adjust for that lens then move onto the next as you have under 20 lenses? That's the only facility...
Posted by mikew on 24/05/2009 - 08:49
So What Would You Do if You Were Me?
I really dont think you can compare the 100-300mm f4 to the 120-400mm in any way shape or form. As I said in the other thread I have the 135-400mm Sigma which is the predecessor to the 120-400mm and was never that impressed with it .. especially when you compare it to my 50-500mm DG EX .. its like n...
Posted by Mike-P on 24/05/2009 - 09:18
