TMG1961. That's already dependening during post processing, and what you want to achieve.
Not sure how to move the camera around to get the subject in each corner without changing focus.
I would have the camera on a tripod TMG1961, and if the subject is focused when in the centre of the image you will not need to change focus when you move the camera to place it in the corners. Each corner should have the same quality, but if you re-focus for each corner you are going to get inaccurate results.
phillipreeve.net
I would have the camera on a tripod TMG1961, and if the subject is focused when in the centre of the image you will not need to change focus when you move the camera to place it in the corners. Each corner should have the same quality, but if you re-focus for each corner you are going to get inaccurate results.
A better explanation of the method is here:
How to check how decentered your lens is - phillipreeve.net
How to check if your lens is decentered? You may have already heard of sample variation or decentered lenses. In this article we will show you how to easily test your lenses for proper centering. If you know how it works it will take you less than 5 minutes per lens! Where this test originates …...
There are a few different approaches really, so you could follow this one which will do the same job, and uses indoor and outdoor images for testing.
I would have the camera on a tripod TMG1961, and if the subject is focused when in the centre of the image you will not need to change focus when you move the camera to place it in the corners. Each corner should have the same quality, but if you re-focus for each corner you are going to get inaccurate results.
A better explanation of the method is here:
How to check how decentered your lens is - phillipreeve.net
How to check if your lens is decentered? You may have already heard of sample variation or decentered lenses. In this article we will show you how to easily test your lenses for proper centering. If you know how it works it will take you less than 5 minutes per lens! Where this test originates …...
There are a few different approaches really, so you could follow this one which will do the same job, and uses indoor and outdoor images for testing.
No need to get everything 100% in focus but the lens should be sharp and should have the same level of sharpness or close to the same level in all corners.
I don't mind loosing a bit of sharpness in the corners, but some lenses loose almost all their sharpness in corners.
Some do yes Jack, but some are not that noticeable.
It can happen with all lenses, cheap or very expensive. That is why i test all my lenses so in case it is not good i can return it and either get another one or get my money back.
Even with new lenses you should check for sharpness and decentering. The lenses are checked by the companies but as long as they fall within tolerance they ship it. Could be that you get a lens that is not up to what you expect from it, if you check it you find out if it is ok and if not you can send it back to have it replaced.
I do hear of people getting 'bad' lenses from time to time, even with new, high end and expensive lenses - so it is good that you check TMG1961, especially as you are mainly buying online and lenses can get banged about in transit.
I also need to not focus that much on sharpness and decentering. In the end that only spoils the fun you get from shooting photos. And to be honest how many people start looking at the corners of your photos, most of the time there is nothing interesting to see there.
How did you clean the sensor?
I bought a cleaning kit from amazon. I didn't spayed inside the camera, just whipped gently with a small cotton cloth.