Just checked my H3b. It has the orange "R."

Paul via phone

On Aug 13, 2013, at 10:55 PM, "Joe J. Wilensky" <[email protected]> wrote:

> The earlier 8-element version was sought after by collectors for a while 
> because it didn't yellow with age, as the 7-element lens did. The 7-element 
> 50/1.4 Takumar used thorium in (one?) rare-earth glass element, as did a 
> couple of other Takumars of the time.
> 
> I think the earlier lens was worse wide open and took longer to improve by 
> stopping down, though it gave a dreamy effect when wide open that was 
> sometimes desirable.
> 
> The earlier lens' rear element may have also protruded more -- in fact, when 
> it was released, it couldn't be used on earlier Pentax SV/H3v, S3/H3, 
> S1a/H1a, etc. cameras because of the mirror box design. The SV/H3v mirror box 
> was tweaked to allow this lens to be mounted without damaging the rear 
> element (those later SV/H3v cameras had the green "R" marking the rewind 
> lever rather than an orange one.
> 
> Joe
> 
> 
> 
>> Oh I see. Reading a bit on this there appears to be little quality
>> difference in pictures between the two optical formulas and that the 8
>> element is rare, and obviously more valuable. Pretty much as much as I
>> assumed. I guess if hybrids existed they would be rare yet and worth a
>> bit more.
>> 
>> On Tue, Aug 13, 2013 at 10:01 PM, Zos Xavius <[email protected]> wrote:
>>> I'm going to be the dumb guy here and ask is there any real major
>>> differences between the 7 and 8 element version optically? IIRC the
>>> earlier version is more desirable? Or do I have it the wrong way
>>> around? I never got what the big deal was over the Takumar 50/1.4. I
>>> have a M50/1.4 and its very, very good for portraits with delicious
>>> smooth bokeh. From some sources, I heard the takumar is slightly
>>> softer. So what's the deal with this lens?
>>> 
>>> On Tue, Aug 13, 2013 at 4:32 PM, Darren Addy <[email protected]> wrote:
>>>> That's true, J.C. but that is the part you are least likely to see
>>>> when looking at photos (online auctions, etc.)
>>>> The lens will either be on the camera or they will have a cap on the
>>>> back. Unless the seller knows what they actually have, in which case
>>>> somebody else can buy it.
>>>> : )
>>>> 
>>>> 
>>>> 
>>>> On Tue, Aug 13, 2013 at 3:25 PM, J.C. O'Connell <[email protected]> wrote:
>>>>> FWIW,
>>>>> 
>>>>> The easiest way to tell a true 8 element is the rear glass element
>>>>> protrudes unprotected.  On the later 7 element versions the rear
>>>>> element glass has a metal rim protecting it.
>>>>> jco
> 
> 
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