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Index: Non-native lenses on E- and A-mount cameras

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addy landzaat View Drop Down
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Posts: 15701 		Post Options Post Options   Quote addy landzaat Quote  Post ReplyReply Direct Link To This Post Posted: 19 December 2013 at 13:35
Good move, like it - now I can post MD 35/2.8 pictures
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darosa View Drop Down
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Posts: 14187 		Post Options Post Options   Quote darosa Quote  Post ReplyReply Direct Link To This Post Posted: 19 December 2013 at 13:47
You are quick Addy, I'm still working on it!
And I have edited my post a bit.
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darosa View Drop Down
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Posts: 14187 		Post Options Post Options   Quote darosa Quote  Post ReplyReply Direct Link To This Post Posted: 19 December 2013 at 14:01
And now I must add the specs of all the versions ...
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addy landzaat View Drop Down
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Posts: 15701 		Post Options Post Options   Quote addy landzaat Quote  Post ReplyReply Direct Link To This Post Posted: 19 December 2013 at 14:04
I'll be thinking of you while doing other stuff
Without kidding, it is appreciated!
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darosa View Drop Down
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Posts: 14187 		Post Options Post Options   Quote darosa Quote  Post ReplyReply Direct Link To This Post Posted: 19 December 2013 at 14:29
Thanx
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thornburg View Drop Down
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Posts: 3765 		Post Options Post Options   Quote thornburg Quote  Post ReplyReply Direct Link To This Post Posted: 19 December 2013 at 19:46
Originally posted by darosa darosa wrote:

As all versions of a lens will be discussed in a single thread, I have changed the Minolta SR names to: MC/MD/Rokkor xmm Fy, in the index and in the first post of each samples thread.

This seemed to me to be in line with Minolta's lens naming strategy for these lenses.
The first lenses (from 1959) were Rokkors, then came the MC Rokkors, followed by the MD Rokkors, and finally only MD remained. There are only a handful of lenses that do not have one of these elements in their name.

If lenses have only one or two versions (for instance only Rokkor or only Rokkor and MC Rokkor, the name will have only those elements.
The famous 58/1.2 only appeared as MC Rokkor so its name is MC Rokkor 58mm F1.2 in the index and the first post of the sample thread.

Other elements like W (for wide) and Tele, and X for the American lenses, as well as the two letters following the Rokkor name, indicating the optical construction of the lens have been left out in the index for reasons of clarity.




What about the "Celtic" versions? I know they're not as popular, but they don't say "Rokkor" on them.
Sony a3000, a6000, a57, a99 - Sony E 16-50, 28/2 | Vivitar 13, 85 | Minolta 24, 28-105, 35-105, 50/1.7, 75-300 | Tokina 28-70/2.6-2.8 | Sigma 70/2.8 Macro | Tamron 70-200/2.8 | Celestron 1000/11
 



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darosa View Drop Down
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Posts: 14187 		Post Options Post Options   Quote darosa Quote  Post ReplyReply Direct Link To This Post Posted: 19 December 2013 at 20:50
For the moment I would like to leave the Celtic lenses out. We have quite a lot of versions already and as you say, the Celtic versions are not very popular so I don't expect many contributions.
But I may be wrong and if anyone would like to post his/her shots taken with a Celtic lens, it's no problem adding that lens.
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Peekayoh View Drop Down
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Posts: 3162 		Post Options Post Options   Quote Peekayoh Quote  Post ReplyReply Direct Link To This Post Posted: 27 December 2013 at 00:59
What about different optical formulae?
The 35/2.8 formula changed in '75.
Shouldn't there be two threads?
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addy landzaat View Drop Down
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Posts: 15701 		Post Options Post Options   Quote addy landzaat Quote  Post ReplyReply Direct Link To This Post Posted: 27 December 2013 at 01:33
@Thornburg:
Celtic lenses were only sold in the US - as far as I know their optical construction was the same as all other lenses.

@Peekayoh:
It is impossible to keep track of all changes Minolta made over the years: SR to MD to MC, in between optical changes, changes in filter thread. There are NINE different versions (not counting Celtic labelled lenses) of the 35/2.8, for most people it is impossible to differentiate between these. Also, I think the first 35/2.8 (1959) was different from the second one (1962) - so, there are three optical versions....
Furthermore, there are 5 (five) different optical formula's for the 135/2.8 - making it quite messy if we make a thread for all.

I support the decision to just keep one thread for all SR-Mount 35/2.8, 135/2.8 (etc.) lenses.
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Peekayoh View Drop Down
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Posts: 3162 		Post Options Post Options   Quote Peekayoh Quote  Post ReplyReply Direct Link To This Post Posted: 27 December 2013 at 11:47
I'm not suggesting a thread for all version, after all some were just cosmetic, just for major changes. The 35/2.8 seems to have two optical formulae, 7 in 6 (1959-1974) and then 5 in 5 (1975-1981).

I agree that it becomes more difficult with the 135/2.8 but as/if the threads become longer and get more difficult to search for the lens you want to research then the thread is no longer a resource, just somewhere to post images.
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addy landzaat View Drop Down
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Posts: 15701 		Post Options Post Options   Quote addy landzaat Quote  Post ReplyReply Direct Link To This Post Posted: 27 December 2013 at 12:32
There are three optical formulas for the SR-Mount: '59, '62 and '75 - the '59 and '62 versions have the same number of groups and elements, but differ in minimum aperture (f/22 and f/16) and minimum focus distance (25cm and 40cm) so it has to be a different optical design.

The optical design changed in '75 in the middle of the MC series - if I have an MC 35/2.8, how do I know which version I have? And even if I know, how does the casual shooter knows?
And when we're done with the Minolta MD/MC lenses, we can start with the Canon FL/FD lenses and the Nikon F-mount lenses. After that the Contax MM and AE lenses - there is no end. Did I mention M42 already?

I can see were you're coming from, however, this is about non-native lenses. It is an additional resource. Maybe you like mflenses better.

I'm in favour of keeping things simple - simple minds need things kept simple
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darosa View Drop Down
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Posts: 14187 		Post Options Post Options   Quote darosa Quote  Post ReplyReply Direct Link To This Post Posted: 27 December 2013 at 13:41
I'm with Addy on this one, for now.
ATM there is no problem finding your way in the samples threads imo.
Starting a separate thread for each optically different version would only be confusing and might lead to members posting samples in the wrong thread.

We had a similar discussion in the AMAE team and decided to keep it simple in the beginning. But it's always possible if and when the samples threads grow bigger and bigger, to change this.
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Peekayoh View Drop Down
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Posts: 3162 		Post Options Post Options   Quote Peekayoh Quote  Post ReplyReply Direct Link To This Post Posted: 27 December 2013 at 14:08
I can see the point in plumping for simplicity, I just hope that simplicity does not end in hopeless confusion.

On the other hand, the threads may not prove to be all that popular; we'll just have to wait and see, I guess.
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saxbike View Drop Down
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Posts: 420 		Post Options Post Options   Quote saxbike Quote  Post ReplyReply Direct Link To This Post Posted: 29 December 2013 at 15:55
I just added a sample page for Nikkor-N 24mm f2.8.

LINK
a7riv &a99 (infrared)

https://hrinnephotography.com
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