-35 C Siberian Extreme portrait test K7+DA*55

yasik · 12-17-2012, 01:22 AM

It is all about cold weather in Novosibirsk, Russia.

Last weak almost every day was -35 degr Celcium.

I was tired of seating at home and on sunday performed an one hour photo test.

It was -35 in the street, and the K7 with DA* were not covered by coat or something else, they were totally exposed to be frozen.

After half of an hour Apperture on DA*55 was frozen and every shot was f1.4....but we had some fun about it)))

Now everything is working great, next time i will try other lens.

So I think the first test was half passed!

And photographs.
Danil f 1.8.
and Girls wide open, suppose)))

**Fries** · 12-17-2012, 04:15 AM

Great experiment!

Mazhe · 12-17-2012, 06:00 AM

That is what I call real world testing, thanks for sharing the results!

By the way, the frost on the eyelashes gives a really nice touch to the portraits

panoguy · 12-17-2012, 06:29 AM

#2 is fantastic!

I also agree that the frost on the eyelashes makes it quite special... not something we see every day!

Glad you could convince your models to go outside as well!

**twilhelm** · 12-17-2012, 06:44 AM

That is extreme testing! I like the second one also, but they are all great shots.

RonHendriks1966 · 12-17-2012, 07:11 AM

That is great. Can you reed the cameratemperature in de exif info? I suppose that there is some heat in the camera and that could keep it warm, but the lens does suffer from the full -35.

**jva59** · 12-17-2012, 08:13 AM

Well done & great results!

yasik · 12-17-2012, 10:05 PM

Originally posted by jva59

Well done & great results!

I checked exif info. The lowest camera temperature was -10degr Celcium.

romeck · 12-18-2012, 01:04 AM

Quote:

Apperture... was frozen

Really frozen picture!

And what about the shutter?
Worked well?

=
Prawdziwe zamrożony obrazek!

A jak tam ze spustem migawki?
Sprawowała się dobrze?

**Kerrowdown** · 12-18-2012, 05:00 PM

Damn that's cold, trust you had vodka standing by ready for when you got inside, well for the models at least.

**TomB_tx** · 12-18-2012, 05:41 PM

Pentax shutters have always been good in the cold. (Below is an H1a shot from college in 1968 - out all night at nearly -30F) But with dSLRs there's the electronics and autofocus motors also. Glad to see it worked!
Name: Winter Carnival 1968.jpg
Views: 835
Size: 94.4 KB

Name: Winter Carnival 1968.jpg
Views: 835
Size: 94.4 KB

dmort · 12-18-2012, 09:51 PM

I'm off to Finland tomorrow where in balmy Helsinki, it is only supposed to between 10 and 20 degrees Fahrenheit. Glad to know I don't really have to worry!

JinDesu · 12-18-2012, 09:52 PM

How well did the AF work? Did it work at all?

yasik · 12-19-2012, 12:57 AM

Originally posted by JinDesu

How well did the AF work? Did it work at all?

At first I swithed it to manual mode, because was afraid that SDM will suffer. But after I realised, that it does not takes a lot of effort to rotate focus ring i switched it to Auto mode. The coldest shots were made in AF and it worked well!

JinDesu · 12-19-2012, 05:37 AM

That's very good to hear! Surprising too - I'd expect the SDM to have locked up as well.

12-17-2012, 01:22 AM	#1
yasik Senior Member Join Date: Mar 2010 Photos: Gallery Posts: 234	*-35 C Siberian Extreme portrait test K7+DA55** It is all about cold weather in Novosibirsk, Russia. Last weak almost every day was -35 degr Celcium. I was tired of seating at home and on sunday performed an one hour photo test. It was -35 in the street, and the K7 with DA* were not covered by coat or something else, they were totally exposed to be frozen. After half of an hour Apperture on DA*55 was frozen and every shot was f1.4....but we had some fun about it))) Now everything is working great, next time i will try other lens. So I think the first test was half passed! And photographs. Danil f 1.8. and Girls wide open, suppose)))

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12-17-2012, 04:15 AM	#2
Fries Loyal Site Supporter Join Date: Oct 2009 Location: Gauw Photos: Gallery \| Albums Posts: 2,582	Great experiment!

12-17-2012, 06:00 AM	#3
Mazhe Senior Member Join Date: Jun 2012 Photos: Gallery Posts: 139	That is what I call real world testing, thanks for sharing the results! By the way, the frost on the eyelashes gives a really nice touch to the portraits

12-17-2012, 06:29 AM	#4
panoguy Pentaxian Join Date: Sep 2007 Location: Washington, D.C. Photos: Gallery \| Albums Posts: 3,327	#2 is fantastic! I also agree that the frost on the eyelashes makes it quite special... not something we see every day! Glad you could convince your models to go outside as well!

12-17-2012, 06:44 AM	#5
twilhelm Loyal Site Supporter Join Date: Feb 2009 Location: Florida Photos: Gallery \| Albums Posts: 2,369	That is extreme testing! I like the second one also, but they are all great shots.

12-17-2012, 07:11 AM	#6
RonHendriks1966 Banned Join Date: Jan 2009 Photos: Gallery Posts: 9,675	That is great. Can you reed the cameratemperature in de exif info? I suppose that there is some heat in the camera and that could keep it warm, but the lens does suffer from the full -35.

12-17-2012, 08:13 AM	#7
jva59 Loyal Site Supporter Join Date: Aug 2010 Location: Toronto Posts: 2,409	Well done & great results!

12-17-2012, 10:05 PM	#8
yasik Senior Member Join Date: Mar 2010 Photos: Gallery Posts: 234 Original Poster	Originally posted by jva59 Well done & great results! I checked exif info. The lowest camera temperature was -10degr Celcium.

12-18-2012, 01:04 AM	#9
romeck Senior Member Join Date: Oct 2012 Location: Piekary Śląskie Photos: Albums Posts: 155	Quote: Apperture... was frozen Really frozen picture! And what about the shutter? Worked well? = Prawdziwe zamrożony obrazek! A jak tam ze spustem migawki? Sprawowała się dobrze?

12-18-2012, 05:00 PM	#10
Kerrowdown PEG Moderator Join Date: Aug 2008 Location: Highlands of Scotland... "Hold Infinity in the palm of your hand" - William Blake Photos: Gallery Posts: 57,804	Damn that's cold, trust you had vodka standing by ready for when you got inside, well for the models at least.

12-18-2012, 05:41 PM	#11
TomB_tx Loyal Site Supporter Join Date: Jun 2011 Location: Texas Photos: Gallery Posts: 1,446	Pentax shutters have always been good in the cold. (Below is an H1a shot from college in 1968 - out all night at nearly -30F) But with dSLRs there's the electronics and autofocus motors also. Glad to see it worked!

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12-18-2012, 09:51 PM	#12
dmort Veteran Member Join Date: Apr 2011 Location: Bronx, NY Photos: Gallery \| Albums Posts: 415	I'm off to Finland tomorrow where in balmy Helsinki, it is only supposed to between 10 and 20 degrees Fahrenheit. Glad to know I don't really have to worry!

12-18-2012, 09:52 PM	#13
JinDesu Veteran Member Join Date: Jun 2011 Location: New York City Photos: Gallery Posts: 5,638	How well did the AF work? Did it work at all?

12-19-2012, 12:57 AM	#14
yasik Senior Member Join Date: Mar 2010 Photos: Gallery Posts: 234 Original Poster	Originally posted by JinDesu How well did the AF work? Did it work at all? At first I swithed it to manual mode, because was afraid that SDM will suffer. But after I realised, that it does not takes a lot of effort to rotate focus ring i switched it to Auto mode. The coldest shots were made in AF and it worked well!

12-19-2012, 05:37 AM	#15
JinDesu Veteran Member Join Date: Jun 2011 Location: New York City Photos: Gallery Posts: 5,638	That's very good to hear! Surprising too - I'd expect the SDM to have locked up as well.