All Forum Comments
Comment by CraigF1969 posted on F.A.O. Shim at 23/05/2009 - 17:52
scottthehat wrote:
i found that when i adjusted my focus on the k20 it made no difference. also do you know anyone else with a k20d you could try the lenses on.
Unfortunately i dont know anyone.i found that when i adjusted my focus on the k20 it made no difference. also do you know anyone else with a k20d you could try the lenses on.
Comment by CraigF1969 posted on F.A.O. Shim at 23/05/2009 - 17:39
Here is the manual shots with the 50mm @ 0, -10 and +10.
Doesnt seem to be any difference in all three.
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/50mmmanual1.jpg[/IMG]
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/50mmmanual2.jpg[/IMG]
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/50mmmanual3.jpg[/IMG]
Doesnt seem to be any difference in all three.
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/50mmmanual1.jpg[/IMG]
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/50mmmanual2.jpg[/IMG]
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/50mmmanual3.jpg[/IMG]
Comment by CraigF1969 posted on F.A.O. Shim at 23/05/2009 - 17:23
They were all New Bodies, 50mm is the AF one.
I will try that theory of yours by not using the light as a guide to infocus and let you know what happens.
I assume there is a way to turn that light off?
Or is it simply just putting everything on manual?
I will try that theory of yours by not using the light as a guide to infocus and let you know what happens.
I assume there is a way to turn that light off?
Or is it simply just putting everything on manual?
Comment by CraigF1969 posted on F.A.O. Shim at 23/05/2009 - 16:49
golfdiesel wrote:
I didn't follow the other threads but is your camera still in warranty? If so I would send it in for adjustment.
I would accept a -5 or +5 adjustment in the body but this is off by quite a bit which makes me think that it needs a re-adjustment of the focussing system.
When I recently bought my Bigma and I wasn't really satisfied with it I did a lot of tests as well with all my lenses and there was clearly a problem with the Bigma because it was the only lens that was off by a huge amount.
Did you allso try out these charts with manual focus to see if you get a clear image that way (so bypassing the whole AF system completely)?
Did it with manual also m8 but its exactly the same.I didn't follow the other threads but is your camera still in warranty? If so I would send it in for adjustment.
I would accept a -5 or +5 adjustment in the body but this is off by quite a bit which makes me think that it needs a re-adjustment of the focussing system.
When I recently bought my Bigma and I wasn't really satisfied with it I did a lot of tests as well with all my lenses and there was clearly a problem with the Bigma because it was the only lens that was off by a huge amount.
Did you allso try out these charts with manual focus to see if you get a clear image that way (so bypassing the whole AF system completely)?
I bought my K20D around a month ago and had to send it back, got a replacement which went "South" after 2 weeks and this is my 3rd one in the space of a month.
I dont know whether to laugh or cry in all honesty.
Im thinking back through my entire life to try and think what i did to deserve this.
Comment by CraigF1969 posted on F.A.O. Shim at 23/05/2009 - 16:12
Ok m8
Did a few more with the 50mm, f1.4, Tripod, focus chart at 45 degrees, close focus as i could with the 50mm, Circle in Viewfinder perfectly lined up with the circle in the focus chart.
First is Minus 10
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/50mmminus10.jpg[/IMG]
This one is Plus 10
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/50mmplus10.jpg[/IMG]
This one is 0
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/50mm0.jpg[/IMG]
Now from what i can see here and the other tests done earlier then i either have 3 lenses which all need adjustment between minus 8 and minus 13 or i have indeed got another faulty camera.
I would find it incredibly unlucky if it were indeed the 3 lenses that were off especially with one being a prime.
Did a few more with the 50mm, f1.4, Tripod, focus chart at 45 degrees, close focus as i could with the 50mm, Circle in Viewfinder perfectly lined up with the circle in the focus chart.
First is Minus 10
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/50mmminus10.jpg[/IMG]
This one is Plus 10
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/50mmplus10.jpg[/IMG]
This one is 0
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/50mm0.jpg[/IMG]
Now from what i can see here and the other tests done earlier then i either have 3 lenses which all need adjustment between minus 8 and minus 13 or i have indeed got another faulty camera.
I would find it incredibly unlucky if it were indeed the 3 lenses that were off especially with one being a prime.
Comment by CraigF1969 posted on F.A.O. Shim at 23/05/2009 - 15:50
shim wrote:
The 50mm at plus 10 is OK.... so it's not the camera. The other two 50mm shots are just not in focus or have camera shake.
You need to get the 400mm sorted out and then take a shot of the box filling the frame at f/5.6 and then another with the 50mm filling the frame (with +10) setting and at f/5.6 or f/8 to give you a good depth of field and compare the two.
shim
Shim they are in focus and were mounted on a tripod with SR off and using the 2 second timer.The 50mm at plus 10 is OK.... so it's not the camera. The other two 50mm shots are just not in focus or have camera shake.
You need to get the 400mm sorted out and then take a shot of the box filling the frame at f/5.6 and then another with the 50mm filling the frame (with +10) setting and at f/5.6 or f/8 to give you a good depth of field and compare the two.
shim
Minus 10 is pretty decent on the 50mm although i suspect minus 13 to 15 would be spot on but it dosent go that far.
Comment by CraigF1969 posted on Extensive focus Tests with 3 different Lenses. at 23/05/2009 - 15:26
Conducted some more focus tests although a little more extensive than before using 3 different Lenses.
First 3 are all the 120-400mm @ various ranges and at f5.6.
Focus Point on the First 3 was the Word Ingredients.
120mm
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/56120mm.jpg[/IMG]
148mm
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/56148mm.jpg[/IMG]
300mm
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/56300mm.jpg[/IMG]
400mm
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/56400mm.jpg[/IMG]
We will now move on to Focus Chart Tests using the Cameras Focus Compensation at 0, -10 and +10
All at 400mm f5.6
Focus Adjust at 0
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/400mmfocus0.jpg[/IMG]
Focus Adjust at -10
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/400mmfocusminus10.jpg[/IMG]
Focus Adjust at Plus 10
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/400mmfocusplus10.jpg[/IMG]
Next we have the Focus adjust at the 3 extremes using a 16-45mm @ f4.
Focus adjust at 0
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/16-4545mmfocus0.jpg[/IMG]
Minus 10
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/16-4545mmfocusminus10.jpg[/IMG]
Plus 10
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/16-4545mmfocusplus10.jpg[/IMG]
Next up we have the 50mm f1.4 @ the 3 extremes, these results alarmed me a little.
Focus @ 0
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/50mm14focus0.jpg[/IMG]
Minus 10
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/50mm14focusminus10.jpg[/IMG]
Plus 10
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/50mm14focusplus10.jpg[/IMG]
I appreciate any and all thought on these.
Thanks
First 3 are all the 120-400mm @ various ranges and at f5.6.
Focus Point on the First 3 was the Word Ingredients.
120mm
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/56120mm.jpg[/IMG]
148mm
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/56148mm.jpg[/IMG]
300mm
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/56300mm.jpg[/IMG]
400mm
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/56400mm.jpg[/IMG]
We will now move on to Focus Chart Tests using the Cameras Focus Compensation at 0, -10 and +10
All at 400mm f5.6
Focus Adjust at 0
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/400mmfocus0.jpg[/IMG]
Focus Adjust at -10
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/400mmfocusminus10.jpg[/IMG]
Focus Adjust at Plus 10
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/400mmfocusplus10.jpg[/IMG]
Next we have the Focus adjust at the 3 extremes using a 16-45mm @ f4.
Focus adjust at 0
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/16-4545mmfocus0.jpg[/IMG]
Minus 10
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/16-4545mmfocusminus10.jpg[/IMG]
Plus 10
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/16-4545mmfocusplus10.jpg[/IMG]
Next up we have the 50mm f1.4 @ the 3 extremes, these results alarmed me a little.
Focus @ 0
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/50mm14focus0.jpg[/IMG]
Minus 10
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/50mm14focusminus10.jpg[/IMG]
Plus 10
[IMG]http://i271.photobucket.com/albums/jj132/CraigF1969/private/50mm14focusplus10.jpg[/IMG]
I appreciate any and all thought on these.
Thanks
Comment by CraigF1969 posted on Extensive focus Tests with 3 different Lenses. at 23/05/2009 - 14:43
About to post some more tests with 3 different lenses and some really eye opening results.
Comment by CraigF1969 posted on F.O.A. Scottthehat; Focus tests as requested. at 23/05/2009 - 14:30
shim wrote:
shim
Its very expensive to me also but i am not going to compare it to a 3 grand lens for comparison.CraigF1969 wrote:
I realise its not a very expensive zoom John but i would still have expected a lot better from a £600 lens.
I would say it was an expensive Zoom I realise its not a very expensive zoom John but i would still have expected a lot better from a £600 lens.
shim
I will try some more tests as its very overcast today and i wont be going out to shoot.
Comment by CraigF1969 posted on F.O.A. Scottthehat; Focus tests as requested. at 23/05/2009 - 13:13
well to be honest i would get back on to srs and say that its out on all your lenses, and see what they say,
Ive emailed Pentax for their thoughts and once i receive a reply will consider whether its worth contacting whatever consumer body deals with cases like this.
Im just sick to the back teeth of all the hassle.