DX lens + TC, does it affect image circle?

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bjn70 Senior Member • Posts: 1,289
DX lens + TC, does it affect image circle?

Curious of anyone has tried this- does a 1.4X TC on a DX lens increase the size of its image circle?  (IOW can you add a TC to a DX lens and use it on an FX body without vignetting?)

(Someone might see what I'm getting at- DX body with 1.5 crop factor vs. 1.4X teleconverter.)  Does this make a DX lens more usable on a FF body?

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