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09-17-2019, 05:20 PM - 3 Likes   #1126
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Shot low in the sky in some haze.
Pentax Q-S1 w/Tamron 55B SP 500mm/8, no crop. The Q-S1 has a crop factor of 4.65 = 2,325mm equivalent focal length.




Last edited by rmcnelly; 09-18-2019 at 01:56 PM.
09-17-2019, 09:43 PM - 1 Like   #1127
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QuoteOriginally posted by rmcnelly Quote
Shot low in the sky in some haze.
Pentax Q-S1 w/Tamron 55B SP 500mm/8, no crop.

Looks excellent. Tamron makes great mirror lenses.
09-21-2019, 05:20 AM - 2 Likes   #1128
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Pentax Q-S1 w/Tamron 55B SP 500mm/8 mirror, no crop.

09-21-2019, 11:43 PM   #1129
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QuoteOriginally posted by rmcnelly Quote
Pentax Q-S1 w/Tamron 55B SP 500mm/8 mirror, no crop.

Awesome shots, Rick!

10-02-2019, 10:36 PM   #1130
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Adapted lens table was updated

All, I just updated the adapted lens table, thank you everybody for your submission and sorry it took me so long (~14 months).

Rick, I put your Tamron 55B SP 500mm/8 mirror submissions under 'Q7 and Q-S1 other mount" category, assuming (from exif) that your Adaptall adapter is not K mount. If this is incorrect please let me know.

Last edited by kwb; 10-03-2019 at 08:08 PM. Reason: fixing typo
10-03-2019, 02:57 AM   #1131
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QuoteOriginally posted by kwb Quote
All, I just updated the adapted lens table, thank you everybody for your submission and sorry it took me so long (~14 months).

Rick, I put your Tamron 55B SP 500mm/8 mirror submissions under 'Q7 and Q-S1 other mount" category, assuming (from exif) that your Adaptrall adapter is not K mount. If this is incorrect please let me know.
Correct, not K mount.
10-03-2019, 04:18 AM - 3 Likes   #1132
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Tamron CCTV 16/1.4










Some more examples from Tamron CCTV lens (16/1.4; C-mount) with the genuine Q. One can find more info and photos in other post:

#1100
10-04-2019, 02:57 PM - 1 Like   #1133
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Pentax Q-S1 w/Tamron 55B SP 500mm/8, no crop.



10-05-2019, 05:46 PM - 1 Like   #1134
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Moon tonight. Left this in color.
Q-S1 w/Tamron 55B SP 500mm/8 Mirror

10-06-2019, 12:40 PM   #1135
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QuoteOriginally posted by rmcnelly Quote
Correct, not K mount.
Thanks Rick for confirmation. Your moon shots are really impressive.


QuoteOriginally posted by Piotrek K Quote
Some more examples from Tamron CCTV lens (16/1.4; C-mount) with the genuine Q. One can find more info and photos in other post:


#1100
Cool star-shaped bokeh on the last one!

Last edited by kwb; 10-06-2019 at 10:16 PM. Reason: typo "cook" -> "cool"
10-06-2019, 03:31 PM   #1136
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Canno lens on Q

I have been using a zoom lens, the Canon-FD 35-70mm f 3.5-4.5 Macro. It provides a good clear image and is flexible as a zoom but a little difficult for hand-holding.
10-07-2019, 02:10 AM   #1137
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QuoteOriginally posted by kwb Quote

Cool star-shaped bokeh on the last one!
Yes, it i s not easy to get it (aperture is star-shaped only on a few settings), but I definitely like it.
10-08-2019, 08:56 AM   #1138
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QuoteOriginally posted by Cipher Quote
Is this the lens, and is that a good price?


Yes it is that lens, no that is not a good price. You can find them for less than $100 shipped, with case and filters if you are patient and have good search skills.


10-09-2019, 03:45 AM   #1139
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QuoteOriginally posted by rmcnelly Quote
Yes it is that lens, no that is not a good price. You can find them for less than $100 shipped, with case and filters if you are patient and have good search skills.
There are 2 models, older and newer, "B" and "BB", the older has a tripod mount. It's said to be slighty better at infinity (but no proof), the newer is better for macro. (Pseudo macro).
Your sample seems to be excellent.

Last edited by Phenix jc; 10-09-2019 at 03:51 AM.
05-30-2020, 01:36 AM - 2 Likes   #1140
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Schneider-Kreuznach Makro-Tele-Xenar 75mm F2.8

The Schneider-Kreuznach Makro-Tele-Xenar 75mm F2.8 is a C mount lens, unfortunately differently from the lenses in D mount his best aperture is not that wide but is 5.6 even if is not bad more open, because of that and the fact it is between my two sharpest K lenses as focal I put that with them.

The SMC Pentax 50mm F1.4 is very soft and with many color problem at F1.4 and so is completly unusable on this small sensor, at F2 is a bit less soft and don't have color problems, at f2.8 is good without color problem and quite sharp and at F5.6 is very good.

The Schneider-Kreuznach Makro-Tele-Xenar 75mm F2.8 is quite sharp at F2.8 but present some color problem, at F5.6 is very good.

The SMC Pentax-FA 100mm F2.8 Macro is soft at F2.8 and at F5.6 is very good.

As a Macro the Schneider 75mm reach only a 1:2 ratio and if compared with the Pentax 100mm at the same ratio both do their best at 5.6 but probably the Pentax is slightly better, at higer aperture (4 and 2.8) the Schneider 75mm is clearly better than the Pentax 100mm, at lower aperture they do not have many different optical quality.

A good thing of the Schneider is that is fairly small and so easy to bring in wathever occasion.

The photos are
1 and 2: Schneider 75mm at F5.6 and a crop at 100%
3, 4 and 5: Pentax 50mm at F1.4, F2 and F2.8
6: Schneider 75mm at F2.8
7: Pentax 100mm at F2.8
8 and 9: Pentax 50mm at F5.6 and a crop at 100%
10, 11 and 12: Schneider 75mm at F5.6 and two crop at 100%
13, 14 and 15: Pentax 100mm at F5.6 and two crop at 100%
Attached Images
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PENTAX Q-S1  Photo 
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Last edited by S.M.; 06-02-2020 at 06:11 AM. Reason: Correct lens name
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