{"id":34,"date":"2014-04-16T21:06:26","date_gmt":"2014-04-16T20:06:26","guid":{"rendered":"http:\/\/www.joerivanveen.com\/?p=34"},"modified":"2024-03-02T19:37:06","modified_gmt":"2024-03-02T19:37:06","slug":"smc-pentax-645-ls-14-135mm","status":"publish","type":"post","link":"https:\/\/www.joerivanveen.com\/blog\/smc-pentax-645-ls-14-135mm\/","title":{"rendered":"SMC Pentax 645 LS 1:4 135mm"},"content":{"rendered":"

– Attach the SMC Pentax\u00a0645 LS 1:4 135mm\u00a0the usual way to your Pentax 645D.
\n– When selecting the shutterspeed on the lens (front ring) leaf shutter operation is automatically engaged on the body, it displays \u201cLS\u201d on the screen.
\n– Available shutterspeeds: 1\/60, 1\/125, 1\/250 and 1\/500.
\n– The lens also has a setting of \u201c0\u201d, which doesn\u2019t use the leaf shutter (it becomes a normal 135mm f\/4 for the Pentax 645 system).
\n– Attach your flash (trigger) to the standard PC connector on the LS 1:4 135mm.
\n– Aperture is automatic, like with all Pentax-A lenses (no stop down metering necessary).
\n– Remember to cock (wind-up) the shutter after each photo, you do this by turning the ring just behind the shutterspeed ring on the lens.
\n– The shutter is cocked when you can see through the viewfinder. After you take a photo the viewfinder remains dark indicating that the shutter has fired and has to be cocked again.
\n– There is some delay after pressing the shutter-release button before the Pentax takes the photograph.
\n– Mirror lockup doesn\u2019t work with leaf shutter operation (no biggie).<\/p>\n

\"Pentax
Pentax 645D with SMC 645 LS 1:4 135mm (shot with iPhone)<\/figcaption><\/figure>\n

Using a leaf shutter lens has been a long-time wish of mine because it enables you to use flash on all speeds, so you can use faster shutterspeeds (usually up to 1\/500 to 1\/800) than the x-sync speed of your camera, blocking out daylight and \/ or freezing action or even slight movements better. For the Canon system I owned before there are no leaf shutter lenses. To this day I don\u2019t understand why Canon won\u2019t make a couple, for example a 40 f\/4 and 80 f\/4 with leaf shutter operation up to 1\/800 second or even 1\/1000. Or maybe a 35 f\/4, 75 f\/4 and 150 f\/5.6. Even Pentax doesn\u2019t make them anymore, but they used to and when I decided to get the 645D (even before I actually got it) I managed to scare up an SMC 645 LS f\/4 135mm in mint condition on Ebay. I had some doubts as to whether it would work perfectly on the 645D but fortunately it does, just attach it and everything works automatically.<\/p>\n

To test it I set up a couple of shots with Annette in a beautiful apartment in Rotterdam, where the 1\/500 flash synchronisation the leafshutter in it provides would be somewhat benificial, to block most of the natural light and create the mood with flash only. I used my Aurora Fusion studio flashlight, connected with an extended pc-sync cord to the LS 135 f\/4. I fear my triggers aren\u2019t fast enough for 1\/500 second so I didn\u2019t use them. I will test that later.<\/p>\n

\"20140413_IGP1594\"<\/a><\/p>\n

\"20140413_IGP1607\"<\/a><\/p>\n

Of course the SMC Pentax 645 LS 1:4 135mm\u00a0is manual focus only but since I always use MF anyway that isn\u2019t a problem for me. The sharpness and overall quality (lack of artifacts) is excellent, even compared to the 90 f\/2.8 macro I own. Maybe it\u2019s slightly less sharp (it better be, considering the price of the 90 f\/2.8) but I\u2019m sure that will go completely unnoticed under normal circumstances. This will be my preferred fashion-lens for sure. I\u2019m already setting up another shoot because I want to use it so bad.<\/p>\n","protected":false},"excerpt":{"rendered":"

A review of the excellent SMC Pentax 645 LS 1:4 135mm. Does it work fully on my 645D? And why did I want it again? + example photographs.<\/p>\n","protected":false},"author":1,"featured_media":1087,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[16],"class_list":["post-34","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pentax-645d","tag-pentax-135mm-f4-leaf-shutter-lens-for-645"],"_links":{"self":[{"href":"https:\/\/www.joerivanveen.com\/blog\/wp-json\/wp\/v2\/posts\/34","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.joerivanveen.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.joerivanveen.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.joerivanveen.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.joerivanveen.com\/blog\/wp-json\/wp\/v2\/comments?post=34"}],"version-history":[{"count":3,"href":"https:\/\/www.joerivanveen.com\/blog\/wp-json\/wp\/v2\/posts\/34\/revisions"}],"predecessor-version":[{"id":3205,"href":"https:\/\/www.joerivanveen.com\/blog\/wp-json\/wp\/v2\/posts\/34\/revisions\/3205"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.joerivanveen.com\/blog\/wp-json\/wp\/v2\/media\/1087"}],"wp:attachment":[{"href":"https:\/\/www.joerivanveen.com\/blog\/wp-json\/wp\/v2\/media?parent=34"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.joerivanveen.com\/blog\/wp-json\/wp\/v2\/categories?post=34"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.joerivanveen.com\/blog\/wp-json\/wp\/v2\/tags?post=34"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}