My DSLR isn’t a full frame image sensor. What difference will this make to my New Petzval 58 photos?
On APS-C format (or cropped-frame) cameras, the New Petzval 58 has an equivalent focal length close to 85mm — that’s the same focal length as the New Petzval 85mm Portrait Lens. So whether you’re shooting with a full-frame or cropped-frame camera, you’ll be able to get great portrait, landscape and daily life shots!
Here are specific crop factors of various cameras when combined with the New Petzval 58:
• APS-C (such as Canon non full-frame digital SLR cameras, Fuji X-Pro 1 and some Sony NEX cameras)
You will have a crop factor of 1.5 or 1.6. An equivalent focal length of New Petzval 58 will be between 87mm and 93mm.
• Micro 4/3
You will have a crop factor of 2. The equivalent focal length to the New Petzval 58 will be 116mm.
Please also refer to this visual explanation
(http://thelomographer.com/2015/PezCrop3.jpg) for an estimate on how your shots will be cropped on various sensors.