Same here, ,jco! Regards Jens Bladt http://www.jensbladt.dk +45 56 63 77 11 +45 23 43 85 77 Skype: jensbladt248
-----Oprindelig meddelelse----- Fra: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] vegne af J. C. O'Connell Sendt: 19. oktober 2006 04:46 Til: 'Pentax-Discuss Mail List' Emne: RE: 35mm equivalent focal length on P6x7 I never crop to the paper aspect ratio, If I crop, it's To the best composition, not to the paper. jco -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of graywolf Sent: Wednesday, October 18, 2006 9:02 PM To: Pentax-Discuss Mail List Subject: Re: 35mm equivalent focal length on P6x7 If you figure you are going to crop to the same formats the long side gives you 4x6 format, and the short gives you 4x5. The diagonal is for theorists only, it has nothing whatsoever to do with the world I work in <grin>. J. C. O'Connell wrote: > Actually there are three conversion factors needed because the two > formats > Do not have the same aspect ratio: > > Diagonal = 89.6mm/43.25mm = 2.07X, 35mm to P67 ( 0.483X, P67 to 35mm ) > Long side = 70mm/36mm = 1.94X, 35mm to P67 ( 0.515X, P67 to 35mm ) > Short side = 56mm/24mm = 2.33X, 35mm to P67 ( 0.429X, P67 to 35mm ) > > There you have it. > > jco > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of > Jens Bladt > Sent: Wednesday, October 18, 2006 3:11 PM > To: Pentax-Discuss Mail List > Subject: RE: 35mm equivalent focal length on P6x7 > > As I stated before, there's a 2.1 factor involved here. 75mm/2.1 = 35,7 > mm: > > http://www.jensbladt.dk/Images/Focal-length-multiplier-web.jpg > Regards > Jens Bladt > http://www.jensbladt.dk > +45 56 63 77 11 > +45 23 43 85 77 > Skype: jensbladt248 > > -----Oprindelig meddelelse----- > Fra: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] vegne af J > and K > Messervy > Sendt: 17. oktober 2006 12:49 > Til: Pentax-Discuss Mail List > Emne: Re: 35mm equivalent focal length on P6x7 > > > Hi Paul > > I'm considering a 75mm 4.5 as it is affordable. Why do you say it isn't > highly regarded? > > Thanks > James > ----- Original Message ----- > From: "Paul Stenquist" <[EMAIL PROTECTED]> > To: "Pentax-Discuss Mail List" <[email protected]> > Sent: Tuesday, October 10, 2006 8:05 PM > Subject: Re: 35mm equivalent focal length on P6x7 > > >> Better bets for wide 6x7 lenses are the 55/4 and the 45/4. Look for > the >> latest version of the 55/4 if you go that way. It has the typography > on >> the tapered end of the focusing ring. These lenses offer a field of >> view similar to a 28 and 23 respectively. Excellent glass. The 75/4.5 >> is not highly regarded. There is a newer 75/2.8 that is superb, but >> it's still pricey and hard to find used. >> Paul >> On Oct 9, 2006, at 11:25 PM, Bob Sullivan wrote: >> >>> Conversion factor for 6x7 lenses to 35mm is 1/2X. >>> That is the 165mm 6x7 lens looks like a 82.5mm lens in 35mm. >>> I like the 165/2.8 but it is really a short telephoto. >>> Try the 75/4.5 lens for a 37.5mm equivalent wide in 35mm. >>> It's not too expensive. >>> Regards, Bob S. >>> >>> On 10/9/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: >>>> Hi all >>>> >>>> I may be on the verge of purchasing a 6x7 body and I'm wondering > what >>>> the >>>> conversion is for focal lengths since I'm used to thinking in 35mm >>>> focal lengths. >>>> >>>> I won't really have much of a budget for lenses, etc so I'll have to >>>> start with only >>>> one. Considering what I plan to mostly use the body for, I want a >>>> wide angle. Can >>>> someone please suggest a good wide angle for the 6x7 for landscapes? >>>> Preferably >>>> one that's fairly readily available used and not too expensive. :) >>>> >>>> >>>> -- >>>> PDML Pentax-Discuss Mail List >>>> [email protected] >>>> http://pdml.net/mailman/listinfo/pdml_pdml.net >>>> >>> -- >>> PDML Pentax-Discuss Mail List >>> [email protected] >>> http://pdml.net/mailman/listinfo/pdml_pdml.net >>> >> >> -- >> PDML Pentax-Discuss Mail List >> [email protected] >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> >> > > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.1.408 / Virus Database: 268.13.4/477 - Release Date: > 10/16/2006 > > -- > No virus found in this outgoing message. > Checked by AVG Free Edition. > Version: 7.1.408 / Virus Database: 268.13.5/482 - Release Date: > 10/18/2006 > > -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.408 / Virus Database: 268.13.5/482 - Release Date: 10/18/2006 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.408 / Virus Database: 268.13.8/489 - Release Date: 10/20/2006 -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
