I assume that "size of the image" means the size of the high quality image circle, with no change of magnification.kpassaur wrote:You mentioned changing the distance from the tube lens to the objective would not change magnification. Would it change the size of the image on the sensor. Currently I am losing a little in the corners on a FF, would changing this distance correct this or is it just how it goes?
That's hard to predict. If you have darkening of the corners, then reducing the distance between objective and tube lens can help. If your corners are not darker but are losing quality due to aberrations, then changing the distance may help but you have to test both less and more.
Shortening? I would expect improvement by lengthening the distance from tube lens to sensor, thus making the image larger (both circle and magnification). Is "shortening" a typo, or have I missed something?I could correct it by shortening the distance from the tube lens to the sensor but that would be a trade off as mentioned above.
--Rik