I'm upgrading from a K-3 to a K-1 II, so unfortunately my most used lens- a Sigma Art 18mm-35mm f1.8- no longer will match the sensor (at least not at 18mm), and I'm bit caught between those three options right now...
mostly I'm shooting landscapes, panoramas and during season a lot of auroras- for examples you can check my Instagram or flickr :
Sealight Arts (@sealightarts) ? Instagram photos and videos Jens Baier | Flickr
18mm on aps-c already became a bit too narrow for my liking- at least for shooting aurora, but given the field of view on ff is wider the zeiss made it on my list as well. Anyone having experiences with either of those lenses, or can even compare those first hand?
I usually also like high-quality Zoom- lenses as well- the Pentax 15-30mm f2,8 doesn't make it on my list for the lack of a filterthread (I'm using Lee- Filters at times...)...
The biggest Con against the Zeiss-Lens of course might be the price-tag, also considering you have to 'leitax' the lens, but apart from that ...
pro Zeiss: well, it's a Zeiss... (that's the biggest pro, might outweigh quite a lot
)
filter thread quite common
built quality
pro samyang: aperture (when shooting Aurora with my Sigma i mostly use f2.2- 2.5)
filter thread
con: not as wide as the others, fov on ff still wider than 18mm on aps-c
pro Irix: wider field of view
con: tricky size of filterthread, 95mm might be difficult to use with my filters (though there seems to be a filterholder for 100mm)
any comments or thoughts are highly welcome