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Voytech · 08-07-2011, 07:52 PM

And I'll add... it's not the best.

adr1an · 08-07-2011, 07:53 PM

cool colours in #2's bokeh though voytech...

yasik · 08-07-2011, 09:26 PM

FA 35

TOUGEFC · 08-08-2011, 12:49 AM

**piledon** · 08-08-2011, 07:23 PM

Lens test: f2.8, f5.6, f16. Ancient (77 year old) Schneider-Kreuznach 7.5cm lens adapted to the K-r. 18 aperture blades. Circular bokeh. Check it out.

Voytech · 08-08-2011, 09:57 PM

F5.6 looks like the sweet spot...

yasik · 08-08-2011, 10:42 PM

F5.6 looks very close to what one can achieve using 18-55 Kit

**piledon** · 08-09-2011, 09:07 AM

Originally posted by Voytech

F5.6 looks like the sweet spot...

I agree. I still need to experiment but the lens sharpens up significantly at smaller apertures! However the last shot at f16 was very difficult and, I think, past f16. I has to increase ISO from 100 to 400 and it was still a relatively long exposure. It's a peculiar lens and I don't have lots of expertise in characterizing them at this point.

Originally posted by yasik

F5.6 looks very close to what one can achieve using 18-55 Kit

Interesting! I'll have to do a test shot of the same scene in afternoon sunlight with it and test that out. I've been wanting to do that anyway.

erkie · 08-09-2011, 09:28 AM

Originally posted by Voytech

And I'll add... it's not the best.

Actually it looks quite good just extremely narrow DOF. I'm assuming this is the older single coated version and not the SX version. I have the f1.8 version and find it as sharp as any of my pentax but it loses contrast much quicker than my smc lenses when shooting towards any kind of light.

Eric

erkie · 08-09-2011, 09:30 AM

Originally posted by piledon

Lens test: f2.8, f5.6, f16. Ancient (77 year old) Schneider-Kreuznach 7.5cm lens adapted to the K-r. 18 aperture blades. Circular bokeh. .

I like it alot wide open ! It has "CHARACTER" Nice job getting it fitted and working good !

Eric

**baro-nite** · 08-09-2011, 11:12 AM

Sigma EX DG 70mm f/2.8 macro
Shot at f/2.8, 1/500 sec.
Minimal processing (curve adjustment, mildly increased saturation, sharpening)

Sol Invictus · 08-09-2011, 11:31 AM

Emerald Lake in British Columbia, Canada.

K20D w/ Pentax-F 50mm f/1.7 at f/2.5 and 1/4000 sec

no PP

**paulh** · 08-09-2011, 11:44 AM

*istD + K55/1.8 wide-open:

legacyb4 · 08-09-2011, 12:08 PM

DA 40mm

DA* 200mm

**piledon** · 08-09-2011, 01:17 PM

Originally posted by baro-nite

Sigma EX DG 70mm f/2.8 macro
Shot at f/2.8, 1/500 sec.
Minimal processing (curve adjustment, mildly increased saturation, sharpening)

Nicely done!

08-09-2011, 09:07 AM	#2213
piledon Loyal Site Supporter Join Date: Feb 2011 Location: San Francisco Photos: Gallery Posts: 128	Originally posted by Voytech F5.6 looks like the sweet spot... I agree. I still need to experiment but the lens sharpens up significantly at smaller apertures! However the last shot at f16 was very difficult and, I think, past f16. I has to increase ISO from 100 to 400 and it was still a relatively long exposure. It's a peculiar lens and I don't have lots of expertise in characterizing them at this point. Originally posted by yasik F5.6 looks very close to what one can achieve using 18-55 Kit Interesting! I'll have to do a test shot of the same scene in afternoon sunlight with it and test that out. I've been wanting to do that anyway. Last edited by piledon; 08-09-2011 at 09:11 AM. Reason: clarify

08-09-2011, 11:31 AM	#2217
Sol Invictus Veteran Member Join Date: Aug 2011 Location: Calgary, Alberta Photos: Gallery Posts: 392	Emerald Lake in British Columbia, Canada. K20D w/ Pentax-F 50mm f/1.7 at f/2.5 and 1/4000 sec no PP Attached Images

08-09-2011, 11:44 AM	#2218
paulh Site Supporter Join Date: Sep 2010 Location: DFW Texas/Ventura County, CA Photos: Gallery \| Albums Posts: 33,308	yellowjacket bokeh *istD + K55/1.8 wide-open:

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08-07-2011, 07:52 PM	#2206
Voytech Veteran Member Join Date: Nov 2009 Location: NY/NJ Photos: Gallery \| Albums Posts: 952	And I'll add... it's not the best.

08-07-2011, 07:53 PM	#2207
adr1an Veteran Member Join Date: Sep 2010 Location: Canberra Photos: Gallery \| Albums Posts: 739	cool colours in #2's bokeh though voytech...

08-07-2011, 09:26 PM	#2208
yasik Senior Member Join Date: Mar 2010 Photos: Gallery Posts: 234	FA 35

08-08-2011, 12:49 AM	#2209
TOUGEFC Veteran Member Join Date: Nov 2009 Location: Brisbane Photos: Gallery Posts: 3,561

08-08-2011, 09:57 PM	#2211
Voytech Veteran Member Join Date: Nov 2009 Location: NY/NJ Photos: Gallery \| Albums Posts: 952	F5.6 looks like the sweet spot...

08-08-2011, 10:42 PM	#2212
yasik Senior Member Join Date: Mar 2010 Photos: Gallery Posts: 234	F5.6 looks very close to what one can achieve using 18-55 Kit

08-09-2011, 09:28 AM	#2214
erkie Veteran Member Join Date: Feb 2010 Location: Missouri Photos: Gallery \| Albums Posts: 407	Originally posted by Voytech And I'll add... it's not the best. Actually it looks quite good just extremely narrow DOF. I'm assuming this is the older single coated version and not the SX version. I have the f1.8 version and find it as sharp as any of my pentax but it loses contrast much quicker than my smc lenses when shooting towards any kind of light. Eric

08-09-2011, 09:30 AM	#2215
erkie Veteran Member Join Date: Feb 2010 Location: Missouri Photos: Gallery \| Albums Posts: 407	Originally posted by piledon Lens test: f2.8, f5.6, f16. Ancient (77 year old) Schneider-Kreuznach 7.5cm lens adapted to the K-r. 18 aperture blades. Circular bokeh. . I like it alot wide open ! It has "CHARACTER" Nice job getting it fitted and working good ! Eric

08-09-2011, 11:12 AM	#2216
baro-nite Loyal Site Supporter Join Date: Aug 2011 Location: North Carolina, USA Photos: Gallery \| Albums Posts: 5,295	Sigma EX DG 70mm f/2.8 macro Shot at f/2.8, 1/500 sec. Minimal processing (curve adjustment, mildly increased saturation, sharpening)

08-09-2011, 12:08 PM	#2219
legacyb4 Inactive Account Join Date: Sep 2008 Location: Tri-Cities, British Columbia Photos: Gallery Posts: 1,784	DA 40mm DA* 200mm

08-09-2011, 01:17 PM	#2220
piledon Loyal Site Supporter Join Date: Feb 2011 Location: San Francisco Photos: Gallery Posts: 128	Originally posted by baro-nite Sigma EX DG 70mm f/2.8 macro Shot at f/2.8, 1/500 sec. Minimal processing (curve adjustment, mildly increased saturation, sharpening) Nicely done!

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