Tokina 11-20mm on DX or save for FX with equivalent lenses?

Started Oct 27, 2015 | Questions thread
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chalkuk Junior Member • Posts: 38
Tokina 11-20mm on DX or save for FX with equivalent lenses?

Hi,

I've spent the last few days reading endless reviews and am seeking some guidance.

I currently have a Nikon D5100, Sigma 10-20, Nikon 18-105, Nikon 50 f/1.8, Nikon 70-300. Lee 100mm system. Manfrotto 190CXPro3. I'm a constantly learning enthusiast into Landscape & family & club competitions.

Considering selling the 10-20 to fund a Tokina 11-20 f/2.8 (I love UWA and would like to dabble with some occasional astrophotography).

& upgrade to the D7200 with perhaps a Sigma/Tamron 17-50 f2.8 or Nikon 16-85. for the low light & ISO improvements.

So my question is.. do I stay on my current upgrade path with the Tokina DX 11-20mm or save for a D750, 24-85 f3.5-4.5 vr and an equivalent UWA eg.Tokina 17-35 f/4, Nikon 17-35 f/4  etc with the option of Samyang 24mm f1.4 if I ever feel the need.

Budget will probably dictate that most FX f/2.8's are out of reach for a while.. but the depth of field of F/4 on FX is much the same as f/2.8 on DX.. and I can make up for that light loss with the ISO performance advantage of FX.

Considering the price jump between the 2 systems will be around £450 after shopping around new and used.. is there any point? (DX=£1200.. FX=£1600)

How much IQ improvement will I see between the UWA and standard zoom options between the 2 systems?

Sorry--there are 25 questions in one post here.. but any guidance will be appreciated, along with any experience of the above lenses.  Many Thanks

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