Hi Alastair, Thanks for your question. Our own Mark Roberts addresses this issue: http://www.robertstech.com/flange.htm I followed his advice and had that part machined so, yes, it works perfectly on Pentax DSLRs. I have not bothered to blacken the machined edge.
Images of the lens can be seen in the Pentax Forums Marketplace ad, which is now up: http://www.pentaxforums.com/forums/photographic-equipment-sale/239939-sale-1st-time-marketplace-vivitar-series-1-90-180mm-flat-field-pk-macro.html Respectfully, Darren On Thu, Oct 17, 2013 at 3:37 PM, Alastair Robertson <kiwibiolog...@gmail.com> wrote: > Darren > > can you comment on this post > http://www.photography-forums.com/vivitar-series-one-90-180-4-5-flat-field-macro-and-pentax-k10d-t83670.html > Does it mount on a K10 or K5? > > Alastair > > On 18 October 2013 07:13, Darren Addy <pixelsmi...@gmail.com> wrote: >> I appreciate the feedback, Bob. >> Alright, I'll start the price at $450 and come down to $399 if I need >> to, in time. >> :) >> >> On Thu, Oct 17, 2013 at 1:05 PM, Bob Sullivan <rf.sulli...@gmail.com> wrote: >>> Darren, >>> That's too low a price! >>> I'd snap it up if I didn't already have a copy here somewhere. >>> The quality is legendary for a Macro and the zoom makes it outstanding. >>> It was one of the first lenses I lusted after some 20 years ago. >>> Regards, Bob S. >>> >>> On Thu, Oct 17, 2013 at 9:17 AM, Darren Addy <pixelsmi...@gmail.com> wrote: >>>> I will be on the road tomorrow, so I hope you will permit me to post >>>> this a day earlier than normal. The astrophotography bug is biting and >>>> so I'm looking to purchase a lens that will perform on the other end >>>> of the spectrum from this one and to pay for it I need to move a >>>> couple of my better lenses, but this is a beauty. You already know >>>> that LOOONG focal length macros are desirable for working distances. >>>> (See the prices for the Pentax-A* 200mm macro, as an example). Here is >>>> a macro that gives you 1:2 at 180mm (and the freedom to use other >>>> focal lengths as well). The "Flat Field" means higher quality in the >>>> corners than you are probably used to in ordinary macro lenses. >>>> >>>> This is one of the "cult classic" lenses that you rarely find in a >>>> Pentax mount. This is a gorgeous copy of this lens and it it ready to >>>> use on your Pentax DSLR. My only reason for selling this beauty (and >>>> another scarce lens) is to pay for a high-dollar lens that I really >>>> need more for astrophotography. >>>> >>>> The Cult Classics page has this to say about the Vivitar Series 1 >>>> 90-180mm Flat Field: >>>> >>>> - - - beginning of quote - - - >>>> >>>> Vivitar 90-180mm f/4.5 Flat-Field Macro Lens >>>> >>>> Vivitar also made a number of high quality zooms under the Series I >>>> label. The 90mm to 180mm >>>> f4.5 flat-field VMC lens from 1978 is an optic that has also achieved >>>> cult status >>>> . >>>> This Vivitar 90-180mm f/4.5 lens was really designed for medical >>>> photography needs. A ring-light flash unit was designed to mount on >>>> the front of this lens too. But as far as I know, it was never >>>> released. This original medical market niche explainssome of the >>>> design features and range of this high quality zoom lens. >>>> >>>> This lens is over 6 inches long, and pretty heavy at 2.3 pounds. At a >>>> constant f/4.5, you aren't going to value it for its speed either. But >>>> it produces excellent results in macro-work down to 1:4 at 90mm and to >>>> 1:2 at its 180mm setting. On most modern zoom lenses, macro >>>> photography settings are a lower quality setup. Achieving macro >>>> capabilities means shifting some elements and so sacrificing some of >>>> the zoom's control over spherical and other aberrations. >>>> >>>> Most current zooms only offer macro settings at either one end or the >>>> other of their range. Generally, you would prefer macrophotography at >>>> the longer end of the range, but most zooms opt for the easier macro >>>> settings at the shorter end of the zoom's range. Only a few zooms >>>> offer continuous macro-settings over their full range. Even the better >>>> current zooms generally only get to 1:4 to 1:6 reproduction ratios >>>> (.e., the object is one-fourt >>>> h lifesize on film). The Vivitar 90-180mm f/4.5 Series I macro zoom is >>>> designed to provide the highest possible >>>> quality continuously down to its closest macro settings. The Vivitar >>>> 90-180mm f/4.5 flat-field lens provides high quality macrophotography >>>> continuously from 90mm (to 1:4) to 180mm (to 1:2). That's unique, and >>>> useful, so you should expect to pay quite a price premium for such a >>>> cult status lens! " >>>> >>>> - - - end of quote - - - >>>> >>>> Here is a set of images produced by this same model of lens: >>>> http://www.flickr.com/photos/odderikgarcia/sets/72157606482781081/ >>>> and here is another thread with images from the Vivitar Series 1 >>>> 90-180mm Flat Field >>>> http://forum.mflenses.com/viewtopic.php?t=17707 >>>> >>>> This lens is in excellent cosmetic, optical and mechanical condition. >>>> I will be happy to ship this lens WORLDWIDE to PDML members. >>>> >>>> This lens is virtually never seen in a PK mount, so here is your >>>> chance to get a Pentaxian's rarity. Priced to sell at $399 plus actual >>>> shipping. (See eBay for much higher prices in a much more common >>>> mount, and you don't often find eBay sellers willing to ship >>>> worldwide). >>>> http://www.ebay.com/itm/like/280905685736?lpid=82 >>>> Contact me for a shipping quote to your location (serious only, please). >>>> >>>> (Apologies for the wordiness, but I figured I would just copy and >>>> paste what I plan on saying in my Pentax Forums Marketplace ad, to be >>>> placed later today. Email me for photos, if interested.) >>>> >>>> Respectfully, >>>> >>>> Darren Addy >>>> Kearney, Nebraska >>>> >>>> >>>> -- >>>> Nothing is sure but death and Pentaxes. >>>> >>>> -- >>>> 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. >>> >>> -- >>> 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. >> >> >> >> -- >> Nothing is sure but death and Pentaxes. >> >> -- >> 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. > > -- > 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. -- Nothing is sure but death and Pentaxes. -- 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.
