Re: 50mm macro lense DOF vs. extension rings

2006-04-04 Thread Rob Studdert
On 4 Apr 2006 at 16:47, Roman wrote: > How does 50mm macro lense DOF f/8 stand compared to 50mm lense f/8 with > 12mm extension ring? Which expected to have greater DOF? > > Thoughts? At the same aperture and magnification the calculated DOF will be the same. However in practice the effective

Re: 50mm macro lense DOF vs. extension rings

2006-04-04 Thread Gonz
Godfrey DiGiorgi wrote: On Apr 4, 2006, at 6:47 AM, Roman wrote: How does 50mm macro lense DOF f/8 stand compared to 50mm lense f/8 with 12mm extension ring? Which expected to have greater DOF? Thoughts? Any 50mm lens will have the same DoF when focused with the same amount of ext

Re: 50mm macro lense DOF vs. extension rings

2006-04-04 Thread Lucas Rijnders
Op Tue, 04 Apr 2006 15:47:54 +0200 schreef Roman <[EMAIL PROTECTED]>: How does 50mm macro lense DOF f/8 stand compared to 50mm lense f/8 with 12mm extension ring? Which expected to have greater DOF? Impossible to tell :o) Thoughts? As far as I know, d.o.f. is dependent on the size of the

Re: 50mm macro lense DOF vs. extension rings

2006-04-04 Thread Godfrey DiGiorgi
On Apr 4, 2006, at 6:47 AM, Roman wrote: How does 50mm macro lense DOF f/8 stand compared to 50mm lense f/8 with 12mm extension ring? Which expected to have greater DOF? Thoughts? Any 50mm lens will have the same DoF when focused with the same amount of extension to achieve a given ma

50mm macro lense DOF vs. extension rings

2006-04-04 Thread Roman
How does 50mm macro lense DOF f/8 stand compared to 50mm lense f/8 with 12mm extension ring? Which expected to have greater DOF? Thoughts? -- home