Questions tagged [focal-reducer]

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14
votes
2answers
3k views

How can a speedbooster improve the light performance of a lens?

I have been reading couple of times now about those new speedboosters for mirrorless cameras. They are being reviewed as improving the low-light performance of a lens by one full stop. In my ...
1
vote
2answers
320 views

Is there a speed booster which will let me use an FX lens on a DX camera with wider focal length and aperture?

Since we have teleconverters that increase the BFD (back focal distance) of a lens and magnify the image, would it be possible to design a teleconverter that decreases the magnification and therefore ...
4
votes
2answers
997 views

Is there something that is the opposite of a teleconverter?

I shoot a Nikon D80 that has a 1.5 crop factor. I'd like to find something like a .67x teleconverter so any full format lens I attach would then have their original focal length and would in theory be ...
0
votes
5answers
181 views

Should I purchase a speed booster to enlargen my kit lens's field of view, or purchase a 35mm prime?

I own a Canon Rebel T7i with only a kit lens and the APS-C sensor size is bothering me for some reason. Is it a good idea to purchase a speed booster in order to take my APS-C sensor into a full-...
0
votes
2answers
583 views

Can a focal reducer be used with a teleconverter?

Can you use a focal reducer with a teleconverter? I don't believe it would be possible to do it but, is it? If I were to use a full-frame 50mm lens on a 2x teleconverter with a 0.71x focal reducer ...