Questions reg. Samyang 12mm f/2.0 NCS CS lens

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crowley213
crowley213 Contributing Member • Posts: 817
Questions reg. Samyang 12mm f/2.0 NCS CS lens

Yesterday I received my Samyang 12mm f/2.0 NCS CS lens. I purchased the lens mainly for astrophotography, an area I want to explore a little further.

As this lens is often stated for this specific genre in photography and B&H had the lens on sale for $249 I finally ordered it.

My questions now, as I neither used any third party lens with Fuji mount on my X-T3 until now and I am not a specialist reg. UWA lenses:

- Is it normal that the lens does not show the aperture value on my X-T3, the value is always "0"?

- What would be the best method (reliable, easy to do) to check if the lens is okay regarding sharpness, potential de-centering, etc.? As I have read and understand there seem to be sample variations and I would like to make sure I have an acceptable sample.

- What would be the best method to check where is infinity focus, as this point seems not to be always / automatically at the infinity focus hard stop of the lens.

Any advice, tips and tricks are very welcome!

Herbert

 crowley213's gear list:crowley213's gear list
Fujifilm X100T Fujifilm X-T3 Fujifilm XF 50-140mm F2.8 Fujifilm 16-55mm F2.8R LM WR
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Fujifilm X-T3
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