Pentax FA 77mm f/1.8 Limited samples

Buschmaster · 10-29-2012, 07:04 PM

This thread is great.

LBA is in full swing.

Sage97 · 10-30-2012, 06:07 PM - **2 Likes**

**twilhelm** · 10-31-2012, 10:20 AM

Great shots Sage!

Sage97 · 10-31-2012, 12:46 PM

Originally posted by twilhelm

Great shots Sage!

Thank you twilhelm. I drove to Sta Fe over the weekend and had to stop and turn around to take these pics. Good thing my gf is very understanding.

saladin · 11-01-2012, 03:43 AM

gee whiz, how does one decide between the 77 and the 85 sigma!?

**twilhelm** · 11-01-2012, 04:37 AM

Originally posted by saladin

gee whiz, how does one decide between the 77 and the 85 sigma!?

You don't. Buy them both!

Actually the 77 is a very small lens which helped me decide.

sychen · 11-01-2012, 04:48 AM - **2 Likes**

A recent shot...

Love this lense the more I use it.

Last edited by sychen; 11-01-2012 at 05:07 AM.

**jeffshaddix** · 11-01-2012, 06:31 AM

Originally posted by sychen

A recent shot...

Love this lense the more I use it.

Nice shot! Love street scenes like this.

There's good sharpness on the subject, but one thing I don't like (and certainly not your fault) are the "rings" around the background bokeh oof higlights. I think it has something to do with over-corrected spherical abberation, but don't quote me on that. This effect is found in a lot of lenses, including my Zeiss 35/2 and VL58/1.4 when shot wide open. I recently picked up a Rokinon 85/1.4 however, and while it's not as sharp as the 77 stopped down, from wide open the bokeh highlights seems more uniform. On the 77, does this effect go away after a half-stop or so (2.2-2.5)?

**ivanvernon** · 11-01-2012, 06:58 AM

Marvellous compositions and exposures! I am inspired to put my 77 limited to work but with little hope of matching this excellent work! Thank you very much for sharing.

**Digitalis** · 11-01-2012, 01:40 PM

Originally posted by jeffshaddix

On the 77, does this effect go away after a half-stop or so (2.2-2.5)?

yes, this effect can be helped by stopping the FA77 down. The effect is a result of spherical aberration - the inclusion of an aspherical element would have remedied it somewhat. But that would have caused the price of the FA77 to be as high as the FA31, possibly even higher.

mr.wizard · 11-01-2012, 04:38 PM - **3 Likes**

i just test my new 77mm... i like the bokeh and the colour.. but i spot high purple fring on it... it is common? any setting i need to adjust to overcome this?
I'm using K5, and this shot is at f2.5

**Digitalis** · 11-02-2012, 12:29 AM

Originally posted by mr.wizard

i just test my new 77mm... i like the bokeh and the colour.. but i spot high purple fring on it... it is common? any setting i need to adjust to overcome this? I'm using K5, and this shot is at f2.5

Yes that is purple fringing around the highlights - it is best to stop the lens down to f/4~f/5.6 to reduce its impact.Purple fringing is very common on fast lenses like the FA77 you see it in lenses from Zeiss,Canon, Nikon even Leica lenses - they all do it to some extent.

bossa · 11-02-2012, 12:40 AM

PF is easy to remove in LR4. The only time it can be an issue with that app is if there are elements of the image that use the colours involved in the fringing. It is possible to 'spot' correct though.

Sage97 · 11-08-2012, 07:08 AM - **2 Likes**

Cross posted in FA limited club

bossa · 11-16-2012, 08:47 PM

Originally posted by Sage97

Cross posted in FA limited club

That pic of the baby bear is wonderful... thanks.

10-30-2012, 06:07 PM - 2 Likes	#62
Sage97 Pentaxian Join Date: Apr 2012 Photos: Albums Posts: 3,239	Last edited by Sage97; 10-30-2012 at 06:55 PM.

11-01-2012, 04:48 AM - 2 Likes	#67
sychen Senior Member Join Date: May 2007 Location: Sydney Posts: 120	Just a recent shot. A recent shot... Love this lense the more I use it. Last edited by sychen; 11-01-2012 at 05:07 AM.

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10-29-2012, 07:04 PM	#61
Buschmaster Veteran Member Join Date: Dec 2006 Location: Minnesota Posts: 806	This thread is great. LBA is in full swing.

10-31-2012, 10:20 AM	#63
twilhelm Loyal Site Supporter Join Date: Feb 2009 Location: Florida Photos: Gallery \| Albums Posts: 2,369	Great shots Sage!

10-31-2012, 12:46 PM	#64
Sage97 Pentaxian Join Date: Apr 2012 Photos: Albums Posts: 3,239	Originally posted by twilhelm Great shots Sage! Thank you twilhelm. I drove to Sta Fe over the weekend and had to stop and turn around to take these pics. Good thing my gf is very understanding.

11-01-2012, 03:43 AM	#65
saladin Pentaxian Join Date: Mar 2008 Location: outer eastern melbourne, australia Posts: 427	gee whiz, how does one decide between the 77 and the 85 sigma!?

11-01-2012, 04:37 AM	#66
twilhelm Loyal Site Supporter Join Date: Feb 2009 Location: Florida Photos: Gallery \| Albums Posts: 2,369	Originally posted by saladin gee whiz, how does one decide between the 77 and the 85 sigma!? You don't. Buy them both! Actually the 77 is a very small lens which helped me decide.

11-01-2012, 06:31 AM	#68
jeffshaddix Site Supporter Join Date: Jun 2010 Location: Colorado Posts: 1,473	Originally posted by sychen A recent shot... Love this lense the more I use it. Nice shot! Love street scenes like this. There's good sharpness on the subject, but one thing I don't like (and certainly not your fault) are the "rings" around the background bokeh oof higlights. I think it has something to do with over-corrected spherical abberation, but don't quote me on that. This effect is found in a lot of lenses, including my Zeiss 35/2 and VL58/1.4 when shot wide open. I recently picked up a Rokinon 85/1.4 however, and while it's not as sharp as the 77 stopped down, from wide open the bokeh highlights seems more uniform. On the 77, does this effect go away after a half-stop or so (2.2-2.5)?

11-01-2012, 06:58 AM	#69
ivanvernon Loyal Site Supporter Join Date: Oct 2012 Location: Medina, OH Photos: Albums Posts: 7,224	Marvellous compositions and exposures! I am inspired to put my 77 limited to work but with little hope of matching this excellent work! Thank you very much for sharing.

11-01-2012, 01:40 PM	#70
Digitalis Site Supporter Join Date: Mar 2009 Location: Melbourne, Victoria Photos: Gallery Posts: 11,694	Originally posted by jeffshaddix On the 77, does this effect go away after a half-stop or so (2.2-2.5)? yes, this effect can be helped by stopping the FA77 down. The effect is a result of spherical aberration - the inclusion of an aspherical element would have remedied it somewhat. But that would have caused the price of the FA77 to be as high as the FA31, possibly even higher.

11-01-2012, 04:38 PM - 3 Likes	#71
mr.wizard Forum Member Join Date: Jan 2012 Posts: 50	i just test my new 77mm... i like the bokeh and the colour.. but i spot high purple fring on it... it is common? any setting i need to adjust to overcome this? I'm using K5, and this shot is at f2.5

11-02-2012, 12:29 AM	#72
Digitalis Site Supporter Join Date: Mar 2009 Location: Melbourne, Victoria Photos: Gallery Posts: 11,694	Originally posted by mr.wizard i just test my new 77mm... i like the bokeh and the colour.. but i spot high purple fring on it... it is common? any setting i need to adjust to overcome this? I'm using K5, and this shot is at f2.5 Yes that is purple fringing around the highlights - it is best to stop the lens down to f/4~f/5.6 to reduce its impact.Purple fringing is very common on fast lenses like the FA77 you see it in lenses from Zeiss,Canon, Nikon even Leica lenses - they all do it to some extent.

11-02-2012, 12:40 AM	#73
bossa Veteran Member Join Date: Jul 2011 Location: Adelaide Posts: 4,546	PF is easy to remove in LR4. The only time it can be an issue with that app is if there are elements of the image that use the colours involved in the fringing. It is possible to 'spot' correct though.

11-08-2012, 07:08 AM - 2 Likes	#74
Sage97 Pentaxian Join Date: Apr 2012 Photos: Albums Posts: 3,239	Cross posted in FA limited club

11-16-2012, 08:47 PM	#75
bossa Veteran Member Join Date: Jul 2011 Location: Adelaide Posts: 4,546	Originally posted by Sage97 Cross posted in FA limited club That pic of the baby bear is wonderful... thanks.