Jump to content

Leica Telyt 500mm


jankap

Recommended Posts

Advertisement (gone after registration)

Vor langer Zeit (DM-Zeit) habe ich ein gebrauchtes Leica MR-Telyt-R 500mm gekauft. Das Ziel war Wildfotografie, ev. Astro oder Landschaft, weniger meine Hunde, usw. Nach einigen Versuchen habe ich es als zu schwierig zur Seite gelegt. Der fehlende Stativ-Anschluss hat mich u.a. verleitet es ohne Stativ zu verwenden.

 

Die Kringel - falls sie mal auftreten - stören mich nicht. Bewegungsunschärfe und die gewaltige Brennweite waren eher das Problem. Da ich mich dann mehr in Richtung für WW interessiere, lag es länger im Schrank. 

 

Bei der Sofi in Südbayern war es auf Vollformat sehr angenehm. Eine Astro-Zeitschrift hat sogar Bilder akzeptiert.

Neulich beim Merkurtransit gab es eine ähnliche Situation. Jetzt habe ich APS-C (Sony QX1) verwendet, das Einfangen der Sonne war viel schwieriger. Der Extender, den ich für den kleinen Merkur bereit gelegt hatte, war deswegen total unbrauchbar. Ich muss eine Nachführung überlegen.

Die Ausbeute war gering, aber die gelungenen Bilder waren durchaus vergleichbar mit denen eines Astrofotografen.

 

Was mich interessieren würde, ob es für dieses Objektiv MTF-Kurven gibt.

Jan

 

PS

dunk hat im LUF auch interessante Ergebnisse mit dem Objektiv gezeigt.

Welcome, dear visitor! As registered member you'd see an image here…

Simply register for free here – We are always happy to welcome new members!

. Edited by jankap
Link to post
Share on other sites

Moin Jan !

MTF-Kurven habe ich zu diesem Objektiv noch keine gesehen, aber eine Beschreibung in Erwin Puts Leica-Lens-Compendium :

 

6.12.5 8/500, MR-Telyt-R, 1980. The mirror system or
catadioptric system, has some distinct advantages a a few very grave problems.
As the mirror is a perfect imaging system, an optical system, using mirrors for
imaging purposes is free from chromatic aberrations and the monochromatic errors
are of much smaller magnitude. It is also possible to build such a lens with
smaller physical dimensions and weight.
Figuur 206 6.12.5 A diagram
The drawback is the fact that the image is located in the beam of incoming light and has to
be beamed out of it with the help of a secondary mirror. (see illustration).
This construction lowers the amount of available light and most importantly
reduces overall contrast significantly. An image of low contrast and low
illumination, is very difficult to focus and its optical performance is weak. A
true mirror system has no additional refracting elements (like ordinary lens
elements), but to correct some of the problems of the mirror system, you can
introduce lens elements into the design. This is called a catadioptric system,
and the MR is such a system. The addition of the normal lens elements introduces
new aberrations and corrects some other defects. The end does not deliver
excellent image quality. Leitz offered in the early seventies a Minolta lens
8/800 with R-bayonet. The principal drawback is the difficulty of focusing and
the low contrast of the lower spatial frequencies.

 

Bei Osterlohs Leica-R, angewandte Leicatechnik kann ich eine genauere Bewertung des Objektivs nicht finden.

In der Ausgabe von 2000 wird es garnicht mehr erwähnt.

 

Im Leica-Handbuch Nr7, siehe unten.

 

Gruß,

Philipp

 

Welcome, dear visitor! As registered member you'd see an image here…

Simply register for free here – We are always happy to welcome new members!

  • Like 1
Link to post
Share on other sites

Danke für die Info.

Die MTFs sind natürlich die Theorie, die Bilder zeigen die wirkliche Qualität.

Aber ich wollte sehen, wie das Objektiv sich im Vergleich zu den normalen Objektiven verhält.

Da gibt es schon gravierende Unterschiede.

 

Eigentlich müsste die Angabe zur Blende zweigeteilt sein. 

Blende 8 für die Schärfe/Tiefe und 9,5 für die Belichtung. Wie Erwin Puts es auch schreibt.

 

Mein Bild war nicht aufgebessert. Nur abgeschnitten und im Format beschränkt. Wobei ich die Sonne 

bei der Aufnahme schon abgeschnitten hatte, die Handhabung mit Kugelkopf und grosser Brennweite.

Jan

Edited by jankap
  • Like 1
Link to post
Share on other sites

In : Angewandte Leica Technik von 1980 wird einiges über dieses Objektiv in technischer Hinsicht geschrieben.

 

Zudem wichtig: Wegen Gewicht und Abmessung neigt der Fotograf dazu, Bilder aus der Hand machen zu wollen. Stativ quasi Pflicht.

Immer einen der Filter verwenden, da diese bei der Rechnung der Linse mit eingeflossen sind!

  • Like 2
Link to post
Share on other sites

Habe mal Scans "versucht". Hoffe man kann was Lesen... :blink:

Welcome, dear visitor! As registered member you'd see an image here…

Simply register for free here – We are always happy to welcome new members!

  • Like 2
Link to post
Share on other sites

Advertisement (gone after registration)

Soeben: Graureiher, der es satt hatte, im kalten Wasser zu stehen.

 

MR-Telyt an Sony A7II, ISO 640, 1/1600s. Bei voller Öffnung, wie für ein Leica-Objektiv ja nur angemessen ;-))

 

50m Entfernung laut Skala.

Welcome, dear visitor! As registered member you'd see an image here…

Simply register for free here – We are always happy to welcome new members!

Edited by halo
  • Like 3
Link to post
Share on other sites

Das andere Extrem: Nahbereichsgrenze und Unschärfekringel, sonst wie oben.

 

(Diesmal natürlich vom Stativ und  mit einer 1/13s.)

Welcome, dear visitor! As registered member you'd see an image here…

Simply register for free here – We are always happy to welcome new members!

Edited by halo
  • Like 5
Link to post
Share on other sites

Na ja, für die reine Sachfotografie würde ich das Objektiv nicht nehmen.

Ich habe aber auch immer gerne ein Blick auf Objektive, die ich für eine Art subjektive Fotografie nutze.

 

Nicht grad für den Nahbereich nehme ich z.B. gerne das 1,4/75 bei Offenblende.

  • Like 1
Link to post
Share on other sites

In : Angewandte Leica Technik von 1980 wird einiges über dieses Objektiv in technischer Hinsicht geschrieben.

 

Zudem wichtig: Wegen Gewicht und Abmessung neigt der Fotograf dazu, Bilder aus der Hand machen zu wollen. Stativ quasi Pflicht.

Immer einen der Filter verwenden, da diese bei der Rechnung der Linse mit eingeflossen sind!

 

Hallo Alles,

 

R-ler hat rechts.

 

Es tut mir leid dass ich muss diese Post auf English screiben. Mein Deutch is nich gut genau fur diese topic zu richtiglich (?) schreiben.

 

Because of their light weight people sometimes underestimate the necessity of a heavy & solid enough tripod & head when using mirror lenses.

 

In actuality: The lighter weight means that a more rigid & more immovable support system is necessary, as is a higher shutter speed, in order to achieve equivalent results to using a heavier lens of the same focal length in the same situation.

 

And mirror lenses take more time to "settle down" after setting up the photo before releasing the shutter very gently.

 

This is still a 500mm lens even though it is light in weight & needs to be treated appropriately.

 

Am Besten,

 

Michael

Edited by Michael Geschlecht
  • Like 1
Link to post
Share on other sites

Michael,

 

if you own the lens you will know about this - or will experience it quite fast. It is still an extraordenary lens for special purpose use. It is unique in the Leica range and Minolta did a really good job with its construction.

Link to post
Share on other sites

Hallo Halo,

 

I do not own that specific lens but I know from experience that there are often more unsharp pictures with mirror lenses than with other types from people assuming that their lighter weight & smaller size than equivalent non-mirror lenses means that they are usable more like whatever size shorter lens that they have similar dimensions to. It is actually the reverse.

 

In reality this lighter weight & shorter length means that any slight movement is multiplied from what it would be if it were that longer & heavier lens.

 

This generally means that mirror lenses need more stabilization with a heavier & more rigid tripod & stronger head than the equivalent longer & heavier lens would need.

 

Am Besten,

 

Michael

Link to post
Share on other sites

You are absolutely right, Michael.

 

Nevertheless you can use the lens even at mountain trips. Don't forget all the "natural tripods" like walls, fences, tables, stones etc. and use the selftimer for triggering the camera without the shakes of your hand.

  • Like 1
Link to post
Share on other sites

Hallo Halo,

 

I do not own that specific lens but I know from experience that there are often more unsharp pictures with mirror lenses than with other types from people assuming that their lighter weight & smaller size than equivalent non-mirror lenses means that they are usable more like whatever size shorter lens that they have similar dimensions to. It is actually the reverse.

 

In reality this lighter weight & shorter length means that any slight movement is multiplied from what it would be if it were that longer & heavier lens.

 

This generally means that mirror lenses need more stabilization with a heavier & more rigid tripod & stronger head than the equivalent longer & heavier lens would need.

 

Am Besten,

 

Michael

 

Again sorry for using English.

 

In an earlier thread on the International forum,on tripods for the use with an Sl, this was also mentioned.

My experience, as stated in this tread, is for both mentioned lenses;

 

I use an extra Manfrotto 359 support if I want absolute stability for long lenses in combination with a Hejnar long lens support.

Pictured is the Gitzo-tripod with the manfrotto 593-support, together with the Leica T and a Minolta Rokkor-R 800mm./f8 and adapter M-R/M-T. This combination is about the same same size as the extended 24-90 SL lens (190 mm.), although the diameter of the lenses differ (88 mm. for the SL and 121 for the Minolta)  The Minolta weighs 1,8 kg. but this is no problem whatsoever for the Gitzo, it is even better.

 

I think just the Hejnar support could be enough for the SL-lens, because it has only a FL of 90 mm. See second picture with the MR-telyt 500mm/f8. and APO-extender. This combination has the same length and girth as the SL-length half extended, 165 mm. (but weighs less). The SL-camera can be mounted on the Hejnar support. The center of gravity of the camera/lens combination should be above the ballhead.

 

Looks all like overkill, but it guarantees a picture without unwanted blur, whichever long lens you use on a camera/lens combination of moderate weight, even with a bit of wind. This is, in my experience a better solution than using a heavier tripod."

Welcome, dear visitor! As registered member you'd see an image here…

Simply register for free here – We are always happy to welcome new members!

  • Like 3
Link to post
Share on other sites

Indeed, looks a little bit like overkill, but might be good and necessary in a windy surrounding. As always: it depends on the situation.

 

 

Well, we are talking in this setup of an effective focal length of 2400 mm. for the Minolta Rokkor and 1500 mm.for the MR Telyt, all this using it in Dutch open "polder" landscape, where wind is always there!

 

The Minolta always requires a tripod. The MR Telyt, which I rate higher, is very usable handhold or with a monopod on hikes, especially in the mountains, or for the more dreamy macro's. The background completely fades away

See some examples below, from same day, handhold or with the monopod, with the Leica T. The average distance, I would say, was 7-10 meters. It was windy as well, by the way, but you have to use it to your advantage....

Welcome, dear visitor! As registered member you'd see an image here…

Simply register for free here – We are always happy to welcome new members!

Edited by AndreasAM
  • Like 3
Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...