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Lens calibration
- Thread starter bikeit
- Start date
Hi guys i have a Nikon 70 / 200 F2.8 lens but the shots are not pin sharp so how do you know if a lens needs calibrated?
Put it on a tripod and take two shots of the same static object. Ideally lock the mirror and use a cable release to avoid vibration.
Do one through the viewfinder and the other in live view. If live view is sharper it needs calibrating as that uses more accurate contrast detection.
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Don Kuykendall_RIP
RIP :(
First off what camera are you using?
If you fill out your profile and add the camera gear we can better answer any questions that you might have.
You can do that at http://nikonites.com/profile.php?do=editprofile
Under camera just put the model number like D7100; Once you put the first letter like D you will see a list of all the cameras in the database pop up. The more numbers you put in the smaller the list becomes. When you see your camera just click on it, Be sure to click on "Save Changes" in the lower right corner.
Thanks
If you fill out your profile and add the camera gear we can better answer any questions that you might have.
You can do that at http://nikonites.com/profile.php?do=editprofile
Under camera just put the model number like D7100; Once you put the first letter like D you will see a list of all the cameras in the database pop up. The more numbers you put in the smaller the list becomes. When you see your camera just click on it, Be sure to click on "Save Changes" in the lower right corner.
Thanks
Don Kuykendall_RIP
RIP :(
What you are talking about is called "Fine Tuning" there are a number of ways to check it and set it. Depending on what camera you have. All cameras do not have the ability to do this.
This is one way several people here have used
DotTune: AF tune technique without taking photos: Nikon FX SLR (DF, D1-D5, D600-D800) Talk Forum: Digital Photography Review
I prefer the computer based method.
https://www.reikan.co.uk/focalweb/
This is one way several people here have used
DotTune: AF tune technique without taking photos: Nikon FX SLR (DF, D1-D5, D600-D800) Talk Forum: Digital Photography Review
I prefer the computer based method.
https://www.reikan.co.uk/focalweb/
Whiskeyman
Senior Member
Does it matter what speed , aperture etc to set the camera at?
Yes, it does. Typically, a lens will get sharper as it is "stepped down", which is to decrease the aperture. For an f/2.8 lens, try shooting a static object at f/5.6 or f/8 and keep the shutter speed faster than 1/200 sec for the 200mm lens, preferably faster by a factor of 1.5 to 2 if hand-holding. If you mount it on a tripod, you should be able to use a slower shutter speed.
WM