Re: the exact focal length of Tokina 17mm Manual focus.

[Glenn Barry <glenn@xxxxxxxxxxx>]

Cheap non OEM extension tubes are also really good for lens mounts, and a lot
sturdier than rear lens caps.

I have had no guilt cannabalising them in the past.

Glenn

Sofjan@xxxxxxx wrote:

> In a message dated 99-09-01 20:34:40 EDT, you write:
>
> << As I was Executive Editor at Popular Photography from 1971
>  to 1986, I can tell you that all lens makers lie on the short
>  side. I would guess that the Tokina 17 is actually 17.8mm
>  If it were 18, they'd say 18.
> ....................................
>
>  Ed Meyers >>
>
>   Actually lens manufacture produce lens either in the longer side or shorter
> side depending on how convinient it is or how easier it is to produced. most
> wide angle will be longer and most tele will be shorter . i remember at one
> time people are debating wheter most 70-210 f2.8 zoom should be label 80-200
> because the tele end is mostly 195-199 mm. 8^)
>
>  Okay back to 360'er . So if i cut the roller for 18mm and then reduce the
> dia,meter bit by bit . do i have to shift the position of the roller or do i
> let the Oring take up the slack.
>   I really need to get of my behind and start this project because it has
> took me so long without any result. Maybe today or tommorow i'll try to find
> the airplane modeler here locally that has a mini lathe to make the roller
> for me and mount the motor and place the bearing for the roller shaft.
>
>   Okay one last call for opinion before i buy the tokina 17mm (non atx) Here
> is my situation i have Contax and maxxum camera. i have a 20mm f2.8 for
> maxxum but i can't use it for 36 larscan sice it doesn't have manual aperture
> tabs. i want to buy a manual 17mm with contax mount and mount on larscan via
> the rear lens cap that way i can still use the lens daily. at first i have
> two choice either Tokina 17mm (non ATX) $229 from B&H or Tamron 17mm SP $369
> plus 39 dollars for the adaptal mounts. but with tamron i could use wityh my
> maxxum albeit with extra adaptall mount.right now i'm set on the Tokina since
> i could get any info stating that tamron is superior than the Tokina . that
> plus the price pretty much set me up. what you guys think ?
>
>    On the side bar !
>
>    yesterday while flipping over this month shutterbug i saw an advertisement
> for Yashica 15mm in one of the used camera dealer. it is advertise for $295
> dollars or some thing like that. i don't know exactly how much it is
> advertise for since i was leaping out of my seat to grab the phone.
>   Unfortunately(you guys must have guess it) the lens already been sold. and
> the guy told me over the phone that he could have sold at least fifty of them
> by the phone call he got. Bummer. i know yashica 15mm is hard to come by . He
> offer me  Zeiss 18mm f4 or 16mm  but i couldnt afford to get it.(at $1100 and
> *1800 respectively)
>
> I truly wish i got the yashica 15mm though. it is hard to comeby and most
> likely the quality is better than either tokina or tamron. plus the advertise
> price is so low. from the tone of the seller at ken Mar (used camera dealer)
> He actually regret selling it at $295. I bet next time he got the same lenses
> he won't let it go that cheap anymore. But maybe there might not be next time
> .
>
> Thanks.

--
Glenn Barry Photography
Studio 1, Level 1
2-14 Mountain St Ultimo
N.S.W. 2007 Australia
Ph (612) 9211 3080
Mobile 0415 279 366
E-Mail: glenn@xxxxxxxxxxx
Web: www.acay.com.au/~glenn