1. What is the different between a DSRL len and an origianl film lens? Is the image quality of the film lens better than the image quality of DSRL lens?
1)The size of pictur on a 35mm film lens is 24x16mm, while the size on a 35 DSRL lens is 36X24mm.
2) The focusing ring on film lens is 0.8 modulus,this is very importanct, as that will make it easier to working with follow focus mochine, to ajust the aperture inside the drawtube.
3)Film lenses have better control over breathing, but the problme is they are very expensive. DSRL leses are relatively cheaper, and they have a relatively good control over the breathing, and the price is resonable and acceptable, but it’s not convinient to shoot video with a DSRL lens as there is no focusing gear on it,also manual aperture has obvious positioning device, That’s why we need to customize(modify) the lenses.
2. What’s the adantages of using the modified lenses on DSRL?
1)the diameter of focusing ring is enlarged to 116mm,the Zoom distance is doubled.
2)the modulus is 0.8, convenient to work with follow focus.
3)There are precise focusing parameters on focusing ring,easier to use.
4)Aperture is modified into steplesscontrol,it fits the needs of continuing shooting.
5)the appereance of the lens is more professional, that would help crease the clients’ confidence.
6)terrific price advantage.
*La modification pourra prendre 2-4 semaines.