Photo got blur at the maximum zoom in position
- Thread starter billowwang
- Start date
David Kwok
Senior Member
That is a clearly a sign of hand shake. What is your shutter speed ? Did you on your VR ? I have used the 18-200 before, it's soft at the 200 end, but it doesn't produce pics like urs.
billowwang
New Member
Dear all, kindly refer to the information and larger photo below.
1/125 F5.6 ISO1400 200mm
It should not be due to hand shake, as when I press the shutter half way only, this is what I see from the window, no any picture was taken at that moment.
I suspect the lens got some problem in auto focusing, but not confirm.
1/125 F5.6 ISO1400 200mm
It should not be due to hand shake, as when I press the shutter half way only, this is what I see from the window, no any picture was taken at that moment.
I suspect the lens got some problem in auto focusing, but not confirm.
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David Kwok
Senior Member
It's highly probable vibration. Look at the basketball rim, it's a double ring.The angle is approx. 45% for the vibration. Rest of the image shows such sign too. I doubt OOF will give you such effect. Not unless it's really lens mis-alignment, but I still I inclined towards vibration.
If you want to be absolutely sure, use the timer mode and on the tripod too and off your VR mode. Set the timer to go off after 5seconds. If it still gives you such kind of image, discuss again
Even with the vibration, yes I agree it's kinda soft. Are you using single focus point ? What are you focusing at ? Can you do another pic ? Are you also using single shot mode ? The default for single shot mode is only release when it's on focus, while the default for continuous mode is release even when not in focus. Check your settings that for single shot mode, release is only when in focus. Also ensure your shutter release will perform focus when half-depress. There is a setting to disable focus for shutter release and only apply to AF-ON button (provided you have one).
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I guess you were trying to focus the transparent board.
Autofocus systems are mostly contrast based and need contrast between the edges of a subject and its background to lock focus. Besides low-contrast subjects, there are other situations that could also prevent a digital camera from properly focusing, for e.g. a cloudless blue sky or a subject that contains only one solid color.
If your main subject is the board for this instance, focus at the white edge should be ok.
Autofocus systems are mostly contrast based and need contrast between the edges of a subject and its background to lock focus. Besides low-contrast subjects, there are other situations that could also prevent a digital camera from properly focusing, for e.g. a cloudless blue sky or a subject that contains only one solid color.
If your main subject is the board for this instance, focus at the white edge should be ok.
TS, looks like camera shake to me. On a DX camera, 200mm is equivalent to 300mm FOV. So you need shutter speed of at least 1/300 to get an ok shot. Even if you turn on VR, VR is not fool proof. At very long focal lengths, if your handhold technique is unstable, you can still get camera shake.
To narrow it down, you really need to put the camera on a tripod, and fire off the camera using a remote shutter release.
To narrow it down, you really need to put the camera on a tripod, and fire off the camera using a remote shutter release.
billowwang
New Member
It's highly probable vibration. Look at the basketball rim, it's a double ring.The angle is approx. 45% for the vibration. Rest of the image shows such sign too. I doubt OOF will give you such effect. Not unless it's really lens mis-alignment, but I still I inclined towards vibration.
If you want to be absolutely sure, use the timer mode and on the tripod too and off your VR mode. Set the timer to go off after 5seconds. If it still gives you such kind of image, discuss again
Even with the vibration, yes I agree it's kinda soft. Are you using single focus point ? What are you focusing at ? Can you do another pic ? Are you also using single shot mode ? The default for single shot mode is only release when it's on focus, while the default for continuous mode is release even when not in focus. Check your settings that for single shot mode, release is only when in focus. Also ensure your shutter release will perform focus when half-depress. There is a setting to disable focus for shutter release and only apply to AF-ON button (provided you have one).
Hi all, thank you very much for your advices, and I will try to take the same photo with tripod and timer, then compare them.
Remember, when on the tripod, you need to turn VR on your lens to OFF.
billowwang
New Member
Roger that, thank you.
fatigue
Senior Member
Most likely,the front optics of your lens is loose. You can use a chopstick to tighten the optics.
There are 2 slots in front of the lens (on the side of the optics), just turn it clockwise
Better don't use the lens until it is tightened, if too loose, it might drop.
If you're not confident, send it to NSC. It shouldn't cost a lot. I even heard they do it FOC.
If you ask me to do it, you have to buy me coffee :bsmilie:
If you successfully fix it by yourself, you still have to buy me coffee :bsmilie:
Note: using the wooden chopstick is just to make sure you don't scratch the optics in case you slipped/missed.
You can even use your finger nails to tighten, it's a temporary solution so your front lens won't drop accidentally.
Then you can send the lens for servicing
There are 2 slots in front of the lens (on the side of the optics), just turn it clockwise
Better don't use the lens until it is tightened, if too loose, it might drop.
If you're not confident, send it to NSC. It shouldn't cost a lot. I even heard they do it FOC.
If you ask me to do it, you have to buy me coffee :bsmilie:
If you successfully fix it by yourself, you still have to buy me coffee :bsmilie:
Note: using the wooden chopstick is just to make sure you don't scratch the optics in case you slipped/missed.
You can even use your finger nails to tighten, it's a temporary solution so your front lens won't drop accidentally.
Then you can send the lens for servicing
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if the shutter speed is 1/8 at 200mm, chances are if you are not on a tripod you will get soft/blur images... as a rule of the thumb, at Xmm use Xs shutter to have clear images...
David Kwok
Senior Member
fatigue said:
Can I buy you 1 month worth of coffee and you teach me how to take apart lens skill? Keke
Of course also include put them back together and still functional. Hehe
fatigue
Senior Member
All of the comments are true. Pictures will be blurred at slow shutter speeds
specially at longer focal length. VR has some limitation and a tripod maybe needed to minimize blur.
But what made me suspect it's a loose front element is the fact that the lens is unable to focus at longer focal length. I have seen these before so somehow I know what went wrong
I'm no better than any of you guys. It just happen that I meet a lot of photographers regularly so
I get a lot of inputs
Sounds familiar eh bro? the one we saw was inability to focus at infinity at wide angle. Anyway, that lens is now awesome. Thank you again!
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billowwang
New Member
Dear All
Glad to say that the issue has already been resolved.
Today afternoon I went to Nikon Service Centre, the counter person checked the lens and told it was caused by the UV filter, as its color was a bit dark.
I took out the UV filter and tried again, the issue has really gone.
After coming out from the Nikon Service Center, I immediately went to FuNan and bought a transparent UV filter.
Really appreciate for all of your attention and advices.
Just share the solution here, in case anybody faces the same problem in future.
Glad to say that the issue has already been resolved.
Today afternoon I went to Nikon Service Centre, the counter person checked the lens and told it was caused by the UV filter, as its color was a bit dark.
I took out the UV filter and tried again, the issue has really gone.
After coming out from the Nikon Service Center, I immediately went to FuNan and bought a transparent UV filter.
Really appreciate for all of your attention and advices.
Just share the solution here, in case anybody faces the same problem in future.
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