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wanderography · 02-26-2012, 09:29 PM - **1 Like**

Went on a long street mission through the city... heres an image from the day shot with my sonnetar lots of images to come on my blog...

Last edited by wanderography; 03-27-2012 at 07:23 PM.

elho_cid · 02-27-2012, 01:48 AM

Great shot, I'm lookong forward in anticipation for more!

wanderography · 02-27-2012, 02:02 AM

Originally posted by elho_cid

Great shot, I'm lookong forward in anticipation for more!

Thank you... Heres a couple more pics, posted quite a few on my blog, have some more to sort through and I'll be heading out on another full day tomorrow again... Need to finally get some sleep...

fuent104 · 02-27-2012, 06:01 PM

Very nice. It looks like someone forgot to tell you that the Q can't produce good images because of its small sensor.

You know what might help with the dynamic range? A Tiffen Low Contrast filter. I've been using one lately, and it is great. I started with Grade 2, and I just received my Grade 5 filter in the mail today (5 is the highest strength).

wanderography · 02-27-2012, 06:13 PM

Originally posted by fuent104

Very nice. It looks like someone forgot to tell you that the Q can't produce good images because of its small sensor.

You know what might help with the dynamic range? A Tiffen Low Contrast filter. I've been using one lately, and it is great. I started with Grade 2, and I just received my Grade 5 filter in the mail today (5 is the highest strength).

Def knew what i was getting into, what makes a good picture is completely subjective to the person... You might like high quality zoom images of birds, i like spontaneous moments in life... How big i can blow the picture up is irrelavent...

fuent104 · 02-27-2012, 06:21 PM

Originally posted by bmonki

Def knew what i was getting into, what makes a good picture is completely subjective to the person...

Very true. It looks like this lens is the perfect companion for the Q. I anticipate that some great images will be produced with the combination.

wanderography · 02-27-2012, 08:09 PM - **1 Like**

hers some more photos from today...

Last edited by wanderography; 03-27-2012 at 07:23 PM.

Zygonyx · 02-28-2012, 02:27 PM

Very interesting shots bmonky.
Seems you enjoy this lens !

elho_cid · 02-29-2012, 03:12 PM

Yeah, I like the first one best!

deanm3 · 02-29-2012, 08:51 PM

Got my replacement lens today ( that was fast! ). Looks excellent and can't wait to get out there and shoot.

Clicker · 03-03-2012, 09:10 PM

Originally posted by falconeye

Interesting post and interesting link!

However, I am not sure if I like what I see. The first ebay auction contains MTF charts at f/1.1 f/2 and f/4 for 10, 20 and 40 lp/mm, at f/4 for 100 lp/mm too (MTF50 at f/4 is 100 lp/mm). The lens clearly has its sweet spot closer to f/4 than f/2. The figures make me worry a bit.

A lens for a sensor this small must perform best below f/2.8, not above. The Pentax prime performs better at f/2 than f/4 and this must be so to resolve the tiny pixels (cf. photozone).

I advice to await first true user tests before ordering the lens. It may be a design not optimally suited for the tiny sensor.

WRT to equivalence, please read my recent paper
-> Falk Lumo: Camera equivalence

An equivalent f/6 lens is an equivalent f/6 lens, nothing makes it gather more light than this. Light gathering capability is defined by the lens aperture surface only.

Hi falconeye, does this help? I shot everything handheld (dist-to-subject and angle-of-view varied , sorry) under cool- flourescent light with "P" mode exif is intact the what's your best opinion based on this unscientific test under one condition? Objects in the foreground and background are equidistant ~7inches from the subject.

Thanks, your opinions for good or bad is very much appreciated.

wanderography · 03-03-2012, 09:26 PM

Originally posted by Clicker

Hi falconeye, does this help? I shot everything handheld (dist-to-subject and angle-of-view varied , sorry) under cool- flourescent light with "P" mode exif is intact the what's your best opinion based on this unscientific test under one condition? Objects in the foreground and background are equidistant ~7inches from the subject.

Thanks, your opinions for good or bad is very much appreciated.

Thanks for the pictures, I do not have the attention span to do something like this, this will help quite a bit...

falconeye · 03-04-2012, 04:46 AM

Originally posted by Clicker

Hi falconeye, does this help? I shot everything handheld (dist-to-subject and angle-of-view varied , sorry) under cool- flourescent light with "P" mode exif is intact the what's your best opinion based on this unscientific test under one condition?

It is difficult to judge. Are tose 1:1 (100%) crops, or full frames resized to 1MP each (I looked at http://img259.imageshack.us/img259/6719/a1tile.jpg )?

Let me assume those are crops, otherwise, the results are rather disappointing except for F4 where not much can be said for.

Assumimg crops, F4 is sharp and the Bokeh is nice.

F5.6 and beyond is blurred and physics says that it must be so.

That the lens may not deliver at F1.x was clear from the beginning by looking at the provided MTF data. If you can live with it, fine and maybe, it delivers in video mode which is still a nice application. However, your test may not show the lens potential because this is not a very controlled test. Are we sure the contrast AF found proper focus?

I would have liked F2 to be as sharp as F4 and F2.8 to be sharper than both. This doesn't seem to be the case. For me, that's the true bummer.

That this is doable for a 25mm lens is shown in the photozone test for the Voigtlander Nokton 25mm f/0.95 MFT. I guess the Voigtländer clearly outperforms the Sonnetar -- and it is only marginally more expensive. However, I don't know if there are µFT/Q converters and if they autofocus. So, YMMV

However, if you want a more useful opinion, please shoot a newspaper hanging on a wall on the other side of the room (25mm is a tele!) and use tripod and a flash and timer release.

Mistral75 · 03-04-2012, 04:59 AM

Originally posted by falconeye

(...) Are we sure the contrast AF found proper focus?

(...) I don't know if there are µFT/Q converters and if they autofocus. (...)

Sonnetar 25mm f/1.1 and Voigtländer 25mm f/0.95 are both manual focus lenses.

Clicker · 03-04-2012, 06:12 AM

Thanks falconeye. Yes they were 50% reduction and yes uncontrolled i will try as you recommended and post up again, interesting comment about it's performance for video because i was thinking the exact thing seeing that the Q has SR enabled only in movie mode with this lens.
Those with this lens I'm just trying to understand the character/physics of this lens and falconeye's opinions among others on these matters i value highly on this forum.

*edit* falconeye would a lensalign be better than the newspaper?

And yes, i am very much a NOOB when it comes to properly testing a lens so please bear with me.

02-27-2012, 02:02 AM	#78
wanderography Veteran Member Join Date: Aug 2011 Location: Hayward, California, USA Posts: 567	Originally posted by elho_cid Great shot, I'm lookong forward in anticipation for more! Thank you... Heres a couple more pics, posted quite a few on my blog, have some more to sort through and I'll be heading out on another full day tomorrow again... Need to finally get some sleep... Last edited by wanderography; 03-27-2012 at 07:23 PM.

03-04-2012, 06:12 AM	#90
Clicker Veteran Member Join Date: May 2008 Photos: Gallery Posts: 3,241	Thanks falconeye. Yes they were 50% reduction and yes uncontrolled i will try as you recommended and post up again, interesting comment about it's performance for video because i was thinking the exact thing seeing that the Q has SR enabled only in movie mode with this lens. Those with this lens I'm just trying to understand the character/physics of this lens and falconeye's opinions among others on these matters i value highly on this forum. edit falconeye would a lensalign be better than the newspaper? And yes, i am very much a NOOB when it comes to properly testing a lens so please bear with me. Last edited by Clicker; 03-04-2012 at 06:53 AM.

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02-26-2012, 09:29 PM - 1 Like	#76
wanderography Veteran Member Join Date: Aug 2011 Location: Hayward, California, USA Posts: 567	Went on a long street mission through the city... heres an image from the day shot with my sonnetar lots of images to come on my blog... Last edited by wanderography; 03-27-2012 at 07:23 PM.

02-27-2012, 01:48 AM	#77
elho_cid Veteran Member Join Date: Dec 2007 Location: Prague Photos: Gallery Posts: 1,199	Great shot, I'm lookong forward in anticipation for more!

02-27-2012, 06:01 PM	#79
fuent104 Veteran Member Join Date: Apr 2011 Location: California Photos: Gallery Posts: 1,356	Very nice. It looks like someone forgot to tell you that the Q can't produce good images because of its small sensor. You know what might help with the dynamic range? A Tiffen Low Contrast filter. I've been using one lately, and it is great. I started with Grade 2, and I just received my Grade 5 filter in the mail today (5 is the highest strength).

02-27-2012, 06:13 PM	#80
wanderography Veteran Member Join Date: Aug 2011 Location: Hayward, California, USA Posts: 567	Originally posted by fuent104 Very nice. It looks like someone forgot to tell you that the Q can't produce good images because of its small sensor. You know what might help with the dynamic range? A Tiffen Low Contrast filter. I've been using one lately, and it is great. I started with Grade 2, and I just received my Grade 5 filter in the mail today (5 is the highest strength). Def knew what i was getting into, what makes a good picture is completely subjective to the person... You might like high quality zoom images of birds, i like spontaneous moments in life... How big i can blow the picture up is irrelavent...

02-27-2012, 06:21 PM	#81
fuent104 Veteran Member Join Date: Apr 2011 Location: California Photos: Gallery Posts: 1,356	Originally posted by bmonki Def knew what i was getting into, what makes a good picture is completely subjective to the person... Very true. It looks like this lens is the perfect companion for the Q. I anticipate that some great images will be produced with the combination.

02-27-2012, 08:09 PM - 1 Like	#82
wanderography Veteran Member Join Date: Aug 2011 Location: Hayward, California, USA Posts: 567	hers some more photos from today... Last edited by wanderography; 03-27-2012 at 07:23 PM.

02-28-2012, 02:27 PM	#83
Zygonyx Pentaxian Join Date: Jun 2011 Location: Ile de France Posts: 4,033 Original Poster	Very interesting shots bmonky. Seems you enjoy this lens !

02-29-2012, 03:12 PM	#84
elho_cid Veteran Member Join Date: Dec 2007 Location: Prague Photos: Gallery Posts: 1,199	Yeah, I like the first one best!

02-29-2012, 08:51 PM	#85
deanm3 Junior Member Join Date: Jun 2008 Location: NYC Posts: 38	Got my replacement lens today ( that was fast! ). Looks excellent and can't wait to get out there and shoot.

03-03-2012, 09:10 PM	#86
Clicker Veteran Member Join Date: May 2008 Photos: Gallery Posts: 3,241	Originally posted by falconeye Interesting post and interesting link! However, I am not sure if I like what I see. The first ebay auction contains MTF charts at f/1.1 f/2 and f/4 for 10, 20 and 40 lp/mm, at f/4 for 100 lp/mm too (MTF50 at f/4 is 100 lp/mm). The lens clearly has its sweet spot closer to f/4 than f/2. The figures make me worry a bit. A lens for a sensor this small must perform best below f/2.8, not above. The Pentax prime performs better at f/2 than f/4 and this must be so to resolve the tiny pixels (cf. photozone). I advice to await first true user tests before ordering the lens. It may be a design not optimally suited for the tiny sensor. WRT to equivalence, please read my recent paper -> Falk Lumo: Camera equivalence An equivalent f/6 lens is an equivalent f/6 lens, nothing makes it gather more light than this. Light gathering capability is defined by the lens aperture surface only. Hi falconeye, does this help? I shot everything handheld (dist-to-subject and angle-of-view varied , sorry) under cool- flourescent light with "P" mode exif is intact the what's your best opinion based on this unscientific test under one condition? Objects in the foreground and background are equidistant ~7inches from the subject. Thanks, your opinions for good or bad is very much appreciated.

03-03-2012, 09:26 PM	#87
wanderography Veteran Member Join Date: Aug 2011 Location: Hayward, California, USA Posts: 567	Originally posted by Clicker Hi falconeye, does this help? I shot everything handheld (dist-to-subject and angle-of-view varied , sorry) under cool- flourescent light with "P" mode exif is intact the what's your best opinion based on this unscientific test under one condition? Objects in the foreground and background are equidistant ~7inches from the subject. Thanks, your opinions for good or bad is very much appreciated. Thanks for the pictures, I do not have the attention span to do something like this, this will help quite a bit...

03-04-2012, 04:46 AM	#88
falconeye Veteran Member Join Date: Jan 2008 Location: Munich, Alps, Germany Photos: Gallery Posts: 6,871	Originally posted by Clicker Hi falconeye, does this help? I shot everything handheld (dist-to-subject and angle-of-view varied , sorry) under cool- flourescent light with "P" mode exif is intact the what's your best opinion based on this unscientific test under one condition? It is difficult to judge. Are tose 1:1 (100%) crops, or full frames resized to 1MP each (I looked at http://img259.imageshack.us/img259/6719/a1tile.jpg )? Let me assume those are crops, otherwise, the results are rather disappointing except for F4 where not much can be said for. Assumimg crops, F4 is sharp and the Bokeh is nice. F5.6 and beyond is blurred and physics says that it must be so. That the lens may not deliver at F1.x was clear from the beginning by looking at the provided MTF data. If you can live with it, fine and maybe, it delivers in video mode which is still a nice application. However, your test may not show the lens potential because this is not a very controlled test. Are we sure the contrast AF found proper focus? I would have liked F2 to be as sharp as F4 and F2.8 to be sharper than both. This doesn't seem to be the case. For me, that's the true bummer. That this is doable for a 25mm lens is shown in the photozone test for the Voigtlander Nokton 25mm f/0.95 MFT. I guess the Voigtländer clearly outperforms the Sonnetar -- and it is only marginally more expensive. However, I don't know if there are µFT/Q converters and if they autofocus. So, YMMV However, if you want a more useful opinion, please shoot a newspaper hanging on a wall on the other side of the room (25mm is a tele!) and use tripod and a flash and timer release.

03-04-2012, 04:59 AM	#89
Mistral75 Pentaxian Join Date: Feb 2009 Location: Paris, France Posts: 7,527	Originally posted by falconeye (...) Are we sure the contrast AF found proper focus? (...) I don't know if there are µFT/Q converters and if they autofocus. (...) Sonnetar 25mm f/1.1 and Voigtländer 25mm f/0.95 are both manual focus lenses.

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