Guest NEIL-D-WILLIAMS Posted June 17, 2016 Share #1 Posted June 17, 2016 Advertisement (gone after registration) I heard somewhere that there is a crop factor when using Hasselblad V lenses on the S.............is it the same crop factor that we get when using the S lenses (which I think is ~0.75 right? ) or is there another factor? I really like my Hasselblad 180mm f4 so wouldn't mind trying it on the S007 Link to post Share on other sites More sharing options...
Advertisement Posted June 17, 2016 Posted June 17, 2016 Hi Guest NEIL-D-WILLIAMS, Take a look here Crop factor when using V lenses on the S007. I'm sure you'll find what you were looking for!
John McMaster Posted June 17, 2016 Share #2 Posted June 17, 2016 Here we go..... on the S a 180mm lens is a 180mm lens whether a 35mm Leica R or a sheet film lens. The 0.8 factor is to get the 35mm equivalent focal length for an S lens, so ~135mm for a 180mm. john Link to post Share on other sites More sharing options...
wattsy Posted June 17, 2016 Share #3 Posted June 17, 2016 Sounds right (John's post). Link to post Share on other sites More sharing options...
Guest NEIL-D-WILLIAMS Posted June 17, 2016 Share #4 Posted June 17, 2016 Sounds right (John's post). Mate I'm confused now. When I bought my 120mm S lens I was told it was more like a 85mm which would make it a negative crop, same as the 70mm being like a 50mm lens Link to post Share on other sites More sharing options...
Guest NEIL-D-WILLIAMS Posted June 17, 2016 Share #5 Posted June 17, 2016 So to answer my question then, the Hasselblad V lenses produce the same crop factor as the Leica S lenses?? Link to post Share on other sites More sharing options...
wattsy Posted June 17, 2016 Share #6 Posted June 17, 2016 Yes, focal length is independent of format. Link to post Share on other sites More sharing options...
Guest NEIL-D-WILLIAMS Posted June 17, 2016 Share #7 Posted June 17, 2016 Advertisement (gone after registration) Yes, focal length is independent of format. Thanks Ian Link to post Share on other sites More sharing options...
jip Posted June 22, 2016 Share #8 Posted June 22, 2016 However the Leica S sensor is smaller than 6*6 film, meaning that your Hasselblad V lenses will zoom in further than they did on a Hasselblad V body. a 180mm lens is always a 180mm lens regardless of film/sensor. a 180mm lens on 6*6 hasselblad v has a wider field of view than that same lens would have on the Leica S a 180mm lens on Leica S has a wider field of view than that same lens would have on a FullFrame sensor. Link to post Share on other sites More sharing options...
Vieri Posted July 15, 2016 Share #9 Posted July 15, 2016 Neil, just multiply by 0.8 the focal length of whatever lens you attach to your 007 and you'll get the 135 FOV equivalent for it. Best, Vieri Link to post Share on other sites More sharing options...
Guest NEIL-D-WILLIAMS Posted July 15, 2016 Share #10 Posted July 15, 2016 Neil, just multiply by 0.8 the focal length of whatever lens you attach to your 007 and you'll get the 135 FOV equivalent for it. Best, Vieri Cheers mate Link to post Share on other sites More sharing options...
John McMaster Posted July 15, 2016 Share #11 Posted July 15, 2016 As you were told in #2 john Link to post Share on other sites More sharing options...
ramarren Posted July 15, 2016 Share #12 Posted July 15, 2016 Forget Crop Factors! It is a ridiculous thing to waste mental effort on. Focal length is a property of a lens. Field of view is a property of a focal length combined with a format size. So: Any 100mm lens fitted to an S camera will produce the same field of view of any other 100mm lens. Any 100mm lens fitted to a V camera will produce the same field of view as any other 100mm lens. The field of view of a particular focal length on a 56x56 mm format camera (Hasselblad V) will necessarily be different from when using that same focal length on another format, like Leica S (45x30mm). Here's an example using an 80mm focal length with a FoV calculator: f Hor AoV Vert AoV Diag AoV H/V Hasselblad V 80 38.5801 38.5801 52.6685 1.0000 Leica S 80 21.2393 31.4173 37.3526 0.6760 I am not sure what value knowing this equivalence might be if you think of field of view in terms of focal length numbers, but if you really really must use the simplification of a "crap factor", and know the Hasselblad V lenses and field of view well, the approximate conversion is that the same lens fitted to the Leica S will give you the FoV of a lens 1.4x longer in Hasselblad terms. Link to post Share on other sites More sharing options...
Guest NEIL-D-WILLIAMS Posted July 16, 2016 Share #13 Posted July 16, 2016 Forget Crop Factors! It is a ridiculous thing to waste mental effort on. Focal length is a property of a lens. Field of view is a property of a focal length combined with a format size. So: Any 100mm lens fitted to an S camera will produce the same field of view of any other 100mm lens. Any 100mm lens fitted to a V camera will produce the same field of view as any other 100mm lens. The field of view of a particular focal length on a 56x56 mm format camera (Hasselblad V) will necessarily be different from when using that same focal length on another format, like Leica S (45x30mm). Here's an example using an 80mm focal length with a FoV calculator: f Hor AoV Vert AoV Diag AoV H/V Hasselblad V 80 38.5801 38.5801 52.6685 1.0000 Leica S 80 21.2393 31.4173 37.3526 0.6760 I am not sure what value knowing this equivalence might be if you think of field of view in terms of focal length numbers, but if you really really must use the simplification of a "crap factor", and know the Hasselblad V lenses and field of view well, the approximate conversion is that the same lens fitted to the Leica S will give you the FoV of a lens 1.4x longer in Hasselblad terms. Thank you sir for completely confusing the matter......... I will just stick with what I see is what I get and move on. Link to post Share on other sites More sharing options...
Jeff S Posted July 16, 2016 Share #14 Posted July 16, 2016 I heard somewhere that there is a crop factor when using Hasselblad V lenses on the S.............is it the same crop factor that we get when using the S lenses (which I think is ~0.75 right? ) or is there another factor? I really like my Hasselblad 180mm f4 so wouldn't mind trying it on the S007 As others have said, a 180 focal length lens is a 180 focal length lens. The field of view (FOV), however, changes as the lens is used with bigger or smaller sensors. In the case of your question, it doesn't matter if you place an S 180 on your S, or a Hasselblad 180 on your S......the resultant FOV will remain the same when using the S (assuming both lenses are really exactly 180mm....chances are they aren't). In 35mm terms (i.e., compared to using a 35mm size sensor like the M240), the FOV is roughly 80% (i.e., similar FOV to using a 144mm lens on 35mm). In the end, however, your last sentence is actually the right thing to do.....try it and see. It's not the math that counts, it's how you see. Funny thing....changing formats doesn't always reflect the math. For instance, my favorite focal lengths on the small sensor M8 were 28mm and 50mm (equivalent to 37mm and 67mm in terms of 35mm....or 'full frame'). Now with the M240, which is 'full frame' 35mm, my favorite focal lengths are 35 and 50, not 35 and 75 as the math would suggest. Go figure. Don't bother comparing a 180 on the S to a 180 on the Hasselblad....the math will hurt your head....for not much significance. Jeff Link to post Share on other sites More sharing options...
ramarren Posted July 16, 2016 Share #15 Posted July 16, 2016 Thank you sir for completely confusing the matter......... I will just stick with what I see is what I get and move on. LOL! That's the best solution anyway, and is kind of what I was intimating. Link to post Share on other sites More sharing options...
FlashGordonPhotography Posted July 16, 2016 Share #16 Posted July 16, 2016 I like equivalents. i run multiple systems and it's handy to know what does what in a simple manner. A 100mm lens on a 35mm camera is approximately: 50mm on m43 67mm on APSC 100mm on 35mm 120mm on mini MF DOF equivalents (are very subjective and influenced by other things like lens design) when comparing apertures are very very roughly: 4/3 is 2 stops more than 35mm APSC is 1.2 stops more than 35mm 35mm is 35mm mini MF is .8 of a stop less DOF than 35mm Pretty easy to work out the rest if you know these. Gordon Link to post Share on other sites More sharing options...
ramarren Posted July 17, 2016 Share #17 Posted July 17, 2016 I like equivalents. i run multiple systems and it's handy to know what does what in a simple manner. ... I agree, but I just remember what does what and don't need to equivalence anything. :-) Link to post Share on other sites More sharing options...
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