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Hello friends,
The one Anon's post got me curious about using a teleconverter, with a crop lens, as a reverse speed booster.
Pic related is the optical stack, that I used.
The EF25 II was needed because of the rear protrusion of the lens and the front protrusion of the teleconverter.
It works, on both an APS-H and FF sensor, but the maximum focusing distance is quite close.
Both of the following images are taken at 55mm and I don't notice any vignetting.
I'll post some images from both cameras, omitting the extension tube, with the lens manually held up to the TC, at the widest angle, I can manage.
The one Anon's post got me curious about using a teleconverter, with a crop lens, as a reverse speed booster.
Pic related is the optical stack, that I used.
The EF25 II was needed because of the rear protrusion of the lens and the front protrusion of the teleconverter.
It works, on both an APS-H and FF sensor, but the maximum focusing distance is quite close.
Both of the following images are taken at 55mm and I don't notice any vignetting.
I'll post some images from both cameras, omitting the extension tube, with the lens manually held up to the TC, at the widest angle, I can manage.
