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09-07-2012, 05:01 PM   #1
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Rikenon 50 f1.7 (P/K) vs Super Takumar 50 f1.4 (M42), which is better?

Hi all
I want to use some MF prime lens for my K5
At fix 50mm, what lens you prefer, Rikenon 50 f1.7 (P/K) vs Super Takumar 50 f1.4 (M42)? I'm only wonder about sharp, color, IQ...
THanks

09-07-2012, 05:39 PM   #2
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I have both.Can't tell that one is better than the other.Don't use either on a regular basis.Have the 1.4 on a bellows and the 1.7 with my tubes.Nothing wrong with either that they couldn't be used every day on a regular basis.
09-07-2012, 05:41 PM   #3
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There is more than one Rikenon 50/1.7, and also more than one SuperTak 50/1.4 for that matter...
09-07-2012, 06:53 PM   #4
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Thanks.
@von, what's that

09-12-2012, 08:34 AM   #5
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Anyone please compare them
09-12-2012, 08:39 AM   #6
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You will probably not going to like my anwser but after going through about 500 lenses, MF and AF ranging from $5 to $2,000 per lens I personally found there is not much differences in term of sharpness , IQ and colours between the lenses unless you compare the extremes ($2 lens versus a $2000 lens). Each lens has its pros and cons which could be a strength or weakness depending on the situation and personal preferences.

So my recommendation to you is pick either and move on. Focus on getting the right technique, composition, go out and shoot and have fun.
09-12-2012, 08:57 AM   #7
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Rikenons are more inexpensive. The Rikenon XR 50/1.7 (K-mount) is excellent and can usually be found for about $20.
09-12-2012, 08:29 PM   #8
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Any of the two will do. I only have a Ricoh Rikenon P 1.7 and a Takumar 55 1.8 and both are sharp but I love the colors and bokeh made from Rikenon.

09-12-2012, 10:40 PM   #9
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Assuming they are both in similar condition, I would recommend the Takumar for two reasons:

1. it is faster
2. it can be adapted to more mounts than a K mount lens

Note that the 2nd version of the Takumar is one of the thoriated lenses - I have never figured out exactly whether its radioactivity poses any danger. If this is a concern, get the Rikenon - I don't think there are any thoriated Rikenon lenses.
09-13-2012, 03:24 AM   #10
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QuoteOriginally posted by Laurentiu Cristofor Quote
I have never figured out exactly whether its radioactivity poses any danger.
I think the general consensus is that you can get as much radiation from eating a few bananas or a handful of brazil nuts. I've a friend in his 70's who's owned a couple of thoriated lenses since new...and aside from glowing in the dark a bit, he's fine!

Last edited by Erdž; 09-13-2012 at 03:42 AM.
09-13-2012, 06:23 AM   #11
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I have one version of the k-mount Rikenon 50/1.7 lens that was re-branded as a Sears lens. I understand it was actually made by Chinon. (If you look at it, it's clearly the same lens as one of the Rikenon versions.) It's every bit the equal to the SMC-A 50mm f/1.7 lens I also have, but cost me just $5.




For general purpose shooting, I'd get the Rikenon, if only for the greater convenience of it having k-mount (no adapter required).
09-13-2012, 11:01 AM   #12
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QuoteOriginally posted by Erdž Quote
I think the general consensus is that you can get as much radiation from eating a few bananas or a handful of brazil nuts. I've a friend in his 70's who's owned a couple of thoriated lenses since new...and aside from glowing in the dark a bit, he's fine!
Yes, but that consensus seems to be reached by people that have bananas and nuts but not Geiger counters The ones with counters show some gamma radiation and we know what happened to Dr. Banner.

See these radiation counts for a bucket of old lenses - the 2nd version Super Takumar is used as a reference

Radioactive lenses -- group shot | Flickr - Photo Sharing!

It's interesting what effect they cause when they're gathered together:

QuoteQuote:
During the shot, the level of gamma radiation measured at the camera (about 0.5 meter above the lenses) was about 4-5x normal background, as measured with a Ludlum 44-2 NaI scintillation probe.
09-15-2012, 10:18 AM - 1 Like   #13
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QuoteQuote:

Originally posted by Erdž


I
think the general consensus is that you can get as much radiation from eating a
few bananas or a handful of brazil nuts. I've a friend in his 70's who's owned a
couple of thoriated lenses since new...and aside from glowing in the dark a bit,
he's fine!



Yes, but that consensus seems to be reached by people that have
bananas and nuts but not Geiger counters
The ones with counters show some gamma radiation and we know what happened to
Dr. Banner.


See these radiation counts for a bucket of old lenses - the 2nd version
Super Takumar is used as a reference


Radioactive lenses -- group shot |
Flickr - Photo Sharing!




It's interesting
what effect they cause when they're gathered together:










Quote:

During
the shot, the level of gamma radiation measured at the camera (about 0.5 meter
above the lenses) was about 4-5x normal background, as measured with a Ludlum
44-2 NaI scintillation probe.



To put the radiation from the 50/1.4 Takumar in better perspective:

While the 50/1.4 S-M-C Takumar is more radioative than bananas or brazil nuts, being indoors (where I live) about 18 inches away from the 50/1.4 will expose you to about as much gamma radiation as going outside, without the lens. Of course, background radiation levels differ a lot from place to place, both indoors and outdoors.
09-15-2012, 10:41 AM   #14
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QuoteOriginally posted by contrabass Quote
I have one version of the k-mount Rikenon 50/1.7 lens that was re-branded as a Sears lens. I understand it was actually made by Chinon. (If you look at it, it's clearly the same lens as one of the Rikenon versions.) It's every bit the equal to the SMC-A 50mm f/1.7 lens I also have, but cost me just $5.




For general purpose shooting, I'd get the Rikenon, if only for the greater convenience of it having k-mount (no adapter required).
There were several different versions of the Sears 1.7. One was made by Ricoh, the other was made by Chinon. The one pictured is a Ricoh, identifiable by the red 1.7 and MC and yellow distance numbers. The Chinon had all white lettering on the front ring and orange distance numbering. The f22 marking was green on the Chinon as that was the setting for program mode on the KSX-P (Chinon CP-5).
09-15-2012, 11:28 AM   #15
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QuoteOriginally posted by boriscleto Quote
There were several different versions of the Sears 1.7. One was made by Ricoh, the other was made by Chinon. The one pictured is a Ricoh, identifiable by the red 1.7 and MC and yellow distance numbers.
Ahh, that's interesting, I did not know that. And, good to know.

Anyway, it's a fine lens. I only wish it had the Pentax "A" contacts; that's the only thing that keeps me from using it even more than I already do.
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