Re: Enablement: SMC A 50/1.7
On Thu, Feb 16, 2012 at 11:24 AM, steve harley wrote: > on 2012-02-16 10:32 Walt Gilbert wrote >> >> But, I can definitely see what people were >> talking about with regard to the build quality of the aperture ring. It's >> not >> crisp like the ones on my K 50/1.4 or M 50/2 -- and it starts to get just >> a >> little bit fussy around f/8. > > > unless you have a camera that can't control the aperture from the body, i > can't see a reason not to set it on A and leave it there; that's where > mine's been for many months If the detent gizmo has started to come loose, you might not be able to set it to the A mode and reliably get the contacts to work. That's what happened with mine. Eventually, it will jam. -- Godfrey godfreydigiorgi.posterous.com -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Enablement: SMC A 50/1.7
On 2/16/2012 1:24 PM, steve harley wrote: on 2012-02-16 10:32 Walt Gilbert wrote But, I can definitely see what people were talking about with regard to the build quality of the aperture ring. It's not crisp like the ones on my K 50/1.4 or M 50/2 -- and it starts to get just a little bit fussy around f/8. unless you have a camera that can't control the aperture from the body, i can't see a reason not to set it on A and leave it there; that's where mine's been for many months That's precisely what I plan to do, Steve. Based on how it felt turning the aperture ring, I thought that would probably be a good idea. It's just balky enough at f/8 to make me want to not use it unless absolutely necessary -- in which case, I have an M and a K 50mm if I should decide I need to dust off the K1000 for whatever reason. -- Walt -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Enablement: SMC A 50/1.7
on 2012-02-16 10:32 Walt Gilbert wrote But, I can definitely see what people were talking about with regard to the build quality of the aperture ring. It's not crisp like the ones on my K 50/1.4 or M 50/2 -- and it starts to get just a little bit fussy around f/8. unless you have a camera that can't control the aperture from the body, i can't see a reason not to set it on A and leave it there; that's where mine's been for many months -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Enablement: SMC A 50/1.7
Welp! My $45 lens arrived today in wonderful shape. There's still snap in the aperture and the glass is clean. But, I can definitely see what people were talking about with regard to the build quality of the aperture ring. It's not crisp like the ones on my K 50/1.4 or M 50/2 -- and it starts to get just a little bit fussy around f/8. But, everything seems to be in working order and I like it based on what I've seen in the few throw-away shots I've taken. Now, all I need is something to photograph and a good day to photograph it. -- Walt -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: FS: SMC 105/2.8; SMC 85/1.8; Super-A; SMC-A 50/1.4; SMC-A 50/1.7; SMC-M 28/2.8
Just a quick note to point out that the 105/2.8 and 85/1.8 are the K mount versions, not screw mount as some have enquired. Thanks, Antonio On 22/10/04 11:12 am, "Antonio" <[EMAIL PROTECTED]> wrote: > Will be selling the following due to move to MF over the next few days, > wanted to offer to the list first before putting on ebay as some items are > hard to find: > > Pentax Lenses: > > SMC 105/2.8 > SMC 85/1.8 > SMC-A 50/1.4 > SMC-A 50/1.7 > SMC-M 28/2.8 > > Bodies: > > Super-A > > If you are interested drop me a line OFF-LIST and we can discuss prices and > shipping. Will put the lot up on ebay if no takers in 3 days. > > Regards, > Antonio > > >
FS: SMC 105/2.8; SMC 85/1.8; Super-A; SMC-A 50/1.4; SMC-A 50/1.7; SMC-M 28/2.8
Will be selling the following due to move to MF over the next few days, wanted to offer to the list first before putting on ebay as some items are hard to find: Pentax Lenses: SMC 105/2.8 SMC 85/1.8 SMC-A 50/1.4 SMC-A 50/1.7 SMC-M 28/2.8 Bodies: Super-A If you are interested drop me a line OFF-LIST and we can discuss prices and shipping. Will put the lot up on ebay if no takers in 3 days. Regards, Antonio
Re: help to re-assemble SMC-A 50/1.7
Hello Rob, any update ? I am searching for tips to clean/lubricate/repair lenses. I have found service manuals for bodies (thank's Marks Roberts !), but no fior lenses :-(( Michel On 20 Oct 2002 at 8:49, Michel Carrère-Gée wrote: Subject: help to re-assemble SMC-A 50/1.7 Look here, this might help. http://www.home.aone.net.au/audiobias/A_lens_thumbs.jpg Thats Rob Studdert's work there. Is here original page ? No comment, how to process ? Hi Michel, The link simply points to thumbnails of the images that will appear in the yet to be finished page. The page will include a full written description of the procedure however as derives for me no return this project will be finished when I have free time. I have forwarded the relevant higher resolution images to Jos. Cheers, Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications.html
Re: help to re-assemble SMC-A 50/1.7
- Original Message - From: Jos from Holland Subject: help to re-assemble SMC-A 50/1.7 > Dear group, > About one year ago a disassemble my smc-A 50/1.7 because the diafragma ring > moved a bit stiff. > Now I want to assemble the lens again, but I donot remember how to put it > together again:-( > I always thought I was quite handy, but now my self confedence got a > crack... > Please advice :-) > Look here, this might help. http://www.home.aone.net.au/audiobias/A_lens_thumbs.jpg Thats Rob Studdert's work there. I tried the same thing with one of those lenses. The darned thing exploded, and my goat ate the small parts. William Robb
help to re-assemble SMC-A 50/1.7
Dear group, About one year ago a disassemble my smc-A 50/1.7 because the diafragma ring moved a bit stiff. Now I want to assemble the lens again, but I donot remember how to put it together again:-( I always thought I was quite handy, but now my self confedence got a crack... Please advice :-) I have the following big parts: 1) lens assembly 2) metal part with bayonet, a ring is attached to it with 3 radial screws. 3) flat metal ring with funny shape, a small metal rod is attached to it. Does this ring have to point in the direction of the bayonet or towards the lens assembly. 4) the diafragma ring and the following small parts: 5) plastic knop to fit the diafragma ring 6) 5 screws to fix the bayonet to the lens assembly 7) small spiral spring 8) tiny ball 9) tiny cylinder with rounded end 10) tiny metal peace bended 11) tiny metal peace with hole in it. Plse can you advice if any peace is missing? Plse can any one indicate how to reassemble the lens? BTW should I forget to make the movement of the diafragma ring a bit more smooth, or is there a cure? Thanks in advance! Jos
Re: SMC-A 50/1.7
>I not very confident pulling it apart, but what the heck, there's bound to >be >someone out there who can pick up the pieces. Just be sure you set the lens at 'A', and cover the ball bearing side of the lens by one hand before pulling the ring out. regards, Alan Chan _ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
Re: SMC-A 50/1.7
>I've heard that a stiff aperture ring is very >common problem with newer Pentax lenses. I think this problem is popular among F, and some A series lenses (those with plastic inner body and plastic rings). But I think FA series do not suffer from this problem. regards, Alan Chan _ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
Re: SMC-A 50/1.7
I've seen this before. There's 2 causes I've noted: 1. There's something broken underneath the aperture ring. Sometimes one of the springs used for the A position is loose. Easily repaired with a very tiny screw. 2. Plastic fatigue. Saw one lens where the ring had been stretched a bit. Perhaps a faulty piece of plastic. This made it ride unevenly and feel loose on the lens. The solution is a replacement ring. Not necessarily a worthwhile undertaking. My son, who just got a used ZX-10, wants to sell his A50/1.7. Collin * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * <>< <>< <>< <>< <>< <>< <>< <>< <>< <>< <>< <>< - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
Re: SMC-A 50/1.7
At 1:05 PM +0930 6/13/01, [EMAIL PROTECTED] wrote: >I've already asked this question on the Yahoo Pentax Users group, with no >replies indicating a similar problem - apologies to those who may be on both >lists. > >I have a querey reagrding my A50/1.7 lens. The apeture ring moves OK >between in >the 1.7 - 5.6 range, however once it gets to f8 it gets very sticky, >and I have >to push that little button designed to let the ring get to the "A" >position, in >order to keep it moving beyond f8. Even then I have to force it "a >little". Has >anyone had similar problems? > Mine went the same way some years back. I took it in to be fixed and was told that the springs or pin or whatever is inside were broken and gumming things up (per someone else's post). They were removed, and now it's alright, except that the A (programme) setting does not work. Not a big deal, as it's fine at all of the other apertures. -- [EMAIL PROTECTED] - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
Re: SMC-A 50/1.7
I wouldn't worry about it too much, my A 50mm F1.4 has seen a lot of use and works perfect. While the M series may have a better feel and made out of metal, it seems the A series are better sealed against dirt and grime getting in there. Also, are you sure the 70-210mm isn't metal? The A 35-105mm has a metal aperture ring, but the feel is more like the plastic A series rings rather than the metal K and M series. Todd At 09:42 AM 6/14/01 +0930, you wrote: >Thankyou for all the advice on the 50/1.7 > >I not very confident pulling it apart, but what the heck, there's bound to be >someone out there who can pick up the pieces. > >I'm also a little disappointed that the three pentax lens' I own, all A series >28/2.8, 70-210/4, 50/1.7 have been mentioned with similar "plasticky" problems. > >n.b. All lens were purchased at the same time in the early eighties > >Darryn Richter >Adelaide Australia > > >- - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
Re: SMC-A 50/1.7
On 14 Jun 2001, at 9:42, [EMAIL PROTECTED] wrote: > Thankyou for all the advice on the 50/1.7 > > I not very confident pulling it apart, but what the heck, there's bound to be > someone out there who can pick up the pieces. > > I'm also a little disappointed that the three pentax lens' I own, all A series > 28/2.8, 70-210/4, 50/1.7 have been mentioned with similar "plasticky" problems. > > n.b. All lens were purchased at the same time in the early eighties Hi Darryn, The use of metal on the "A" series lens aperture rings was limited to the higher cost products ie 15f3.5, 15f2.8, 20f2.8, 24f2.8, 28f2, 35f2, 50f1.2 etc. I have rarely had problems with stiffening aperture rings on those lens that employ metal. Cheers, Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://www.ozemail.com.au/~distudio/publications.html - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
Re: SMC-A 50/1.7
Thankyou for all the advice on the 50/1.7 I not very confident pulling it apart, but what the heck, there's bound to be someone out there who can pick up the pieces. I'm also a little disappointed that the three pentax lens' I own, all A series 28/2.8, 70-210/4, 50/1.7 have been mentioned with similar "plasticky" problems. n.b. All lens were purchased at the same time in the early eighties Darryn Richter Adelaide Australia - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
Re: SMC-A 50/1.7
Darryn, I have an A28/2.8 which acted the same just before it let go completely. There are 2 small leaf springs under the aperture ring which lock you into the A setting. They come loose from their mounts and gum up the works. If you are handy and careful, you can disassemble/remove the aperture ring and reset the springs in place (glue or otherwise). Watch out for a little ball bearing that is spring loaded under the ring. It makes the 'click' in the click stops on the lens and is easily lost. Sounds like you need a repair... Regards, Bob S. [EMAIL PROTECTED] writes: << I have a querey regarding my A50/1.7 lens. The aperture ring moves OK between in the 1.7 - 5.6 range, however once it gets to f8 it gets very sticky, and I have to push that little button designed to let the ring get to the "A" position, in order to keep it moving beyond f8. Even then I have to force it "a little". Has anyone had similar problems? >> - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
Re: SMC-A 50/1.7
Hi Darryn, My SMC A 50/1.7 also has a sticky aperture ring - not as sticky as yours sounds though. In comparison, my (what looks like older) SMC M 50/1.7 has no such problem. I think it stems from the fact that the newer A series lenses have plasticky aperture rings. Unfortunately, the A70-210/4 and the A50/1.4 have plasticky aperture rings too. The A24/2.8 is pure magic - feels like a piece of "real" camera gear. I was disappointed that the A50/1.4 had a plastic aperture ring. I have fears that it might become sticky with time like the A50/1.7. Maybe I'll have to get an A50/1.2 to have a "real" piece of camera gear and A series coatings at the same time. Is the A50/1.4 really optically that much better than the M50/1.4? I'm not sure if I'd rather have a lens that feels better to use at the price of optical performance. Yours sincerely, Frank. -- Francis Tang, Postgraduate Research Student, LFCS, Edinburgh. Visiting: AG14, FB Mathematik, TU Darmstadt, Deutschland. Tel: +49 174/3545241 (D2 Voda) ZNr: S215/215 Email: [EMAIL PROTECTED] WWW: http://www.dcs.ed.ac.uk/home/fhlt/ On Wed, Jun 13, 2001 at 01:05:47PM +0930, [EMAIL PROTECTED] wrote: > I've already asked this question on the Yahoo Pentax Users group, with no > replies indicating a similar problem - apologies to those who may be on both > lists. > > I have a querey reagrding my A50/1.7 lens. The apeture ring moves OK between in > the 1.7 - 5.6 range, however once it gets to f8 it gets very sticky, and I have > to push that little button designed to let the ring get to the "A" position, in > order to keep it moving beyond f8. Even then I have to force it "a little". Has > anyone had similar problems? > > > Darryn Richter > Adelaide Australia - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
