EXCERPT page containing first few paragraphs. 2019-03-24 21:33:00
UA_SEARCH_BOT_null @ 184.108.40.206
For a general understanding of format equivalence, see Format-Equivalent Depth of Field and F-Stop.
Format equivalance quick summary for the XCD lens lineup:
21.8mm f/4 ~= 17.9mm f/3.3
30mm f/3.5 ~= 24.7mm f/2.9
35-75mm f/n.n ~= 28.8 - 61.6mm f/n.n
45mm f/3.5 ~= 37mm f/2.9
65mm f/tbd ~= 53.4mm f/tbd
90mm f/3.2 ~= 74mm f/2.9
120mm f/3.5 ~= 98.6mm f/2.9
180mm f/2.8 ~= 148mm f/2.3
Versus 36.0 X 24.0 mm sensor. Nominal focal lengths as per specifications; actual focal lengths of real lenses are usually rounded.
There are no “fast” lenses in the lineup, even considering the equivalent lens speed. To match a Zeiss Otus 85mm f/1.4, we would need an XCD 105mm f/1.7*, which would be 2.5 stops faster than the fastest lens listed above, and the size of a super telephoto. So it’s clear why the XCD lenses are the size and speed they are.
Article continues for subscribers...
Diglloyd Medium Format is by yearly subscription. Subscribe now for about 27 cents a day ($100/year).
BEST DEAL: get full access to ALL 7 PUBLICATIONS for only 68 cents a day ($249.95)!
These systems are hugely expensive, so make the right choice for your own needs (full frame vs medium format).
- In-depth lens evaluations covering behaviors not likely to be found anywhere else, based on real-world field shooting.
- How to configure menus and buttons and best operating practices, gotchas and how-to.
- Real world examples with insights found nowhere else. Make sharper images just by understanding lens and camera behaviors.
- Jaw-dropping image quality found nowhere else utilizing Retina-grade images up to 28 megapixels filling up to 5K display, plus large crops.
- Aperture series from wide open through stopped down, showing the full range of lens performance and bokeh.
- Optical quality analysis of field curvature, focus shift, sharpness, flare, distortion, and performance in the field.