When using wide-angle lenses on the Ikon rangefinder camera, users may want to pick up a ZI Viewfinder from ZEISS in order to ensure accurate framing. This optical finder is designed to demonstrate the perspective of 21mm lenses, which provide a wider angle of view than the Ikon's integrated rangefinder. Photographers can use this to check framing while the rangefinder can be used to confirm focus. Also, it easily attaches to the camera's hot shoe.

For ZEISS Ikon Rangefinder Camera    Optical Viewfinder for 21mm Lenses    Mounts via Camera's Hot Shoe

Related Questions and Answers

Q: 1. Is it true that with this auto focus lens for astrophotography you can achieve infinity focus for stars by turning the focus ring all the way to the end where it stops? I have a difficult time focusing in the dark and this sounds too good to be true.

A: The ZEISS Loxia 21mm f/2.8 Lens for Sony E has hard stops at both infinity and minimum focusing positions, so yes, you should be able to focus manually at infinity for astrophotography usage needs.

Q: 2. What is the effective focal length of this lens on an APS--C camera?

A: The equivalent length would be close to 31mm.

Q: 3. Is the Zeiss warranty on the Loxia lenses sold by B&H an international warranty, or is the warranty only valid in the US?

A: The ZEISS warranty is valid for the region in which the lens is sold. Lenses sold by B&H Photo are serviced by Zeiss in their NY offices.

Q: 4. Is focus mechanical or by wire?

A: It's mechanical, fantastic feel IMO.

Q: 5. Will the Zeiss Loxia 21mm f/2.8 Lens for Sony E Mount work with the Sony FS7?

A: Yes and the 21 mm provides a very useful field of view to work with.

Q: 6. Can anyone recommend a well-fitting lens case or cover?

A: I'm using a smal neoprene micro lens pouch bought on Amazon. It's brown, made of neoprene with a drawstring to close it and thus nicely protects the lens. Comes in three sizes, the smallest one (tight) and the medium (with extra room) work well for the Loxia 21. Unfortunately, but understandably I cannot paste the link here...p

Q: 7. Does this lens have focus breathing?

A: Yes, definitely noticeable in my copy when comparing closest focus to infinity. No doubt there are scenarios where this phenomenon matters but as an amateur enthusiast Ive never encountered any problems because of it. Definitely a fabulous lens.

Q: 8. Does this lens require slim-mount 46mm filters? Or will a regular 46mm work? Thanks!

A: The ZEISS C Biogon T* 21mm f/4.5 ZM Lens (Silver) compatible with regular 46mm thread filters.

Q: 9. Does this viewfinder accept ZEISS ZI Diopter Correction Lenses ??

A: The ZEISS ZI Viewfinder for 21mm Lens does work with the ZEISS ZI Diopter Correction Lenses.

Q: 10. Does this lens apiculture setting show on the eye piece readout on the a7 model cameras

A: Yes, the aperture setting it is perfectly visible.