Re: PESO - Beetleface

2016-08-20 Thread Jostein 

Thanks Mark!
Got a mail from Japan Post today with an update on the shipment. Just a 
few days now. :-)

Jostein

Den 20.08.2016 01.02, skrev Mark C:

This is looking really good, Jostine. Great detail and excellent
lighting. First rate! I can vouch for the K24 f3.5 as an excellent optic
for macros when reverse mounted on extensions.

Mark


On 8/15/2016 3:21 PM, Jostein wrote:

One more in the category of tiny monsters.

http://www.alunfoto.no/innhold/beetleface/

I have now worked through five of the old 4X microscope lenses Mike W.
brought me, and found that none of them can match the detail
resolution of a reversed Pentax-M 28mm f/2.8 stopped down to f/5.6.
The Pentax is a little soft in the contrast rendering, though, so
maybe the A-series edition is better.

To explore further options, a Pentax-K 24mm f/3.5 has just been
ordered through eBay. :-)

Interesting times. Another, more systematic study of the 10X lenses
coming up, but not in a couple of weeks. School has just started here,
and I'm busy getting to know my new students.

Jostein




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Re: PESO - Beetleface

2016-08-19 Thread Steve Cottrell 
On 19/8/16, Mark C, discombobulated, unleashed:

>This is looking really good, Jostine

When our Norwegian friend puts on a wig, paints his nails and burns
incense ;-)

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Re: PESO - Beetleface

2016-08-19 Thread Mark C 
This is looking really good, Jostine. Great detail and excellent 
lighting. First rate! I can vouch for the K24 f3.5 as an excellent optic 
for macros when reverse mounted on extensions.


Mark


On 8/15/2016 3:21 PM, Jostein wrote:

One more in the category of tiny monsters.

http://www.alunfoto.no/innhold/beetleface/

I have now worked through five of the old 4X microscope lenses Mike W. 
brought me, and found that none of them can match the detail 
resolution of a reversed Pentax-M 28mm f/2.8 stopped down to f/5.6. 
The Pentax is a little soft in the contrast rendering, though, so 
maybe the A-series edition is better.


To explore further options, a Pentax-K 24mm f/3.5 has just been 
ordered through eBay. :-)


Interesting times. Another, more systematic study of the 10X lenses 
coming up, but not in a couple of weeks. School has just started here, 
and I'm busy getting to know my new students.


Jostein




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Re: PESO - Beetleface

2016-08-17 Thread mike wilson 
> On 17 August 2016 at 20:51 Jostein  wrote:
> 
> 
> Multicoating could indeed be an issue. Flares could be terrible if too 
> much light was bouncing off the specimen mounting plate.
> One site I found describes the resolution of microscope optics as fairly 
> uniform across brands and time, but dependent on glass technology. The 
> three major classes of tech are "Plan achromat", "plan fluorite" and 
> "plan apochromat". The apochromat seems in general to resolve twice as 
> fine details as do the achromat, with the fluorite in the middle.
> 
> I suspect the microscope objectives will have the edge over camera 
> optics at higher magnification.
> 
> Btw, you may want to check this (awesome stuff) out on occasion:
> http://microsculpture.net/
> 
> He apparently use a microscope objective mounted in front of another 
> photographic lens.

Looks like he lights his subjects as carefully and intricately as does (did)
Playboy.

> 
> Jostein
> 
> 
> Den 16.08.2016 17.28, skrev mike wilson:
> >> On 15 August 2016 at 20:21 Jostein  wrote:
> >>
> >>
> >> One more in the category of tiny monsters.
> >>
> >> http://www.alunfoto.no/innhold/beetleface/
> >>
> >> I have now worked through five of the old 4X microscope lenses Mike W.
> >> brought me, and found that none of them can match the detail resolution
> >> of a reversed Pentax-M 28mm f/2.8 stopped down to f/5.6. The Pentax is a
> >> little soft in the contrast rendering, though, so maybe the A-series
> >> edition is better.
> >
> > Most of those lenses will predate (in design if not manufacture) the camera
> > lens
> > and I don't think any of them will be multicoated.
> >
> >>
> >> To explore further options, a Pentax-K 24mm f/3.5 has just been ordered
> >> through eBay. :-)
> >>
> >> Interesting times. Another, more systematic study of the 10X lenses
> >> coming up, but not in a couple of weeks. School has just started here,
> >> and I'm busy getting to know my new students.

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Re: PESO - Beetleface

2016-08-17 Thread Jostein 
Multicoating could indeed be an issue. Flares could be terrible if too 
much light was bouncing off the specimen mounting plate.
One site I found describes the resolution of microscope optics as fairly 
uniform across brands and time, but dependent on glass technology. The 
three major classes of tech are "Plan achromat", "plan fluorite" and 
"plan apochromat". The apochromat seems in general to resolve twice as 
fine details as do the achromat, with the fluorite in the middle.


I suspect the microscope objectives will have the edge over camera 
optics at higher magnification.


Btw, you may want to check this (awesome stuff) out on occasion:
http://microsculpture.net/

He apparently use a microscope objective mounted in front of another 
photographic lens.


Jostein


Den 16.08.2016 17.28, skrev mike wilson:

On 15 August 2016 at 20:21 Jostein  wrote:


One more in the category of tiny monsters.

http://www.alunfoto.no/innhold/beetleface/

I have now worked through five of the old 4X microscope lenses Mike W.
brought me, and found that none of them can match the detail resolution
of a reversed Pentax-M 28mm f/2.8 stopped down to f/5.6. The Pentax is a
little soft in the contrast rendering, though, so maybe the A-series
edition is better.


Most of those lenses will predate (in design if not manufacture) the camera lens
and I don't think any of them will be multicoated.



To explore further options, a Pentax-K 24mm f/3.5 has just been ordered
through eBay. :-)

Interesting times. Another, more systematic study of the 10X lenses
coming up, but not in a couple of weeks. School has just started here,
and I'm busy getting to know my new students.




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Re: PESO - Beetleface

2016-08-16 Thread mike wilson 
> On 15 August 2016 at 20:21 Jostein  wrote:
> 
> 
> One more in the category of tiny monsters.
> 
> http://www.alunfoto.no/innhold/beetleface/
> 
> I have now worked through five of the old 4X microscope lenses Mike W. 
> brought me, and found that none of them can match the detail resolution 
> of a reversed Pentax-M 28mm f/2.8 stopped down to f/5.6. The Pentax is a 
> little soft in the contrast rendering, though, so maybe the A-series 
> edition is better.

Most of those lenses will predate (in design if not manufacture) the camera lens
and I don't think any of them will be multicoated.

> 
> To explore further options, a Pentax-K 24mm f/3.5 has just been ordered 
> through eBay. :-)
> 
> Interesting times. Another, more systematic study of the 10X lenses 
> coming up, but not in a couple of weeks. School has just started here, 
> and I'm busy getting to know my new students.

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Re: PESO - Beetleface

2016-08-15 Thread Alan C 
Perhaps insects in general? The insect kingdom outweighs all the rest put 
together.


Alan C

-Original Message- 
From: Bob W-PDML

Sent: Monday, August 15, 2016 9:32 PM
To: Pentax-Discuss Mail List
Subject: Re: PESO - Beetleface

Beautiful photo. I hope your new students are as good-looking.

It may be the face of God:

http://www.philly.com/philly/blogs/evolution/New-Evidence-that-God-had-an-Inordinate-Fondness-for-Beetles.html

B


On 15 Aug 2016, at 20:22, Jostein <p...@alunfoto.no> wrote:

One more in the category of tiny monsters.

http://www.alunfoto.no/innhold/beetleface/




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Re: PESO - Beetleface

2016-08-15 Thread ann sanfedele 

ditto - the sci-fi look.. NOT my scarf, Cotters ;-)

ann


On 8/15/2016 7:07 PM, Bruce Walker wrote:

On Mon, Aug 15, 2016 at 6:58 PM, Steve Cottrell  wrote:

On 15/8/16, Jostein, discombobulated, unleashed:


One more in the category of tiny monsters.

http://www.alunfoto.no/innhold/beetleface/

Stunning! Truly awesome colour. Sci-fi stuff :-)

What Cotty said. Very cool.




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Re: PESO - Beetleface

2016-08-15 Thread Bruce Walker 
On Mon, Aug 15, 2016 at 6:58 PM, Steve Cottrell  wrote:
>
> On 15/8/16, Jostein, discombobulated, unleashed:
>
> >One more in the category of tiny monsters.
> >
> >http://www.alunfoto.no/innhold/beetleface/
>
> Stunning! Truly awesome colour. Sci-fi stuff :-)

What Cotty said. Very cool.

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Re: PESO - Beetleface

2016-08-15 Thread Steve Cottrell 
On 15/8/16, Jostein, discombobulated, unleashed:

>One more in the category of tiny monsters.
>
>http://www.alunfoto.no/innhold/beetleface/

Stunning! Truly awesome colour. Sci-fi stuff :-)

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  Cotty


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Re: PESO - Beetleface

2016-08-15 Thread Marco Alpert 
Awesome!

- Marco

> On Aug 15, 2016, at 12:21 PM, Jostein  wrote:
> 
> One more in the category of tiny monsters.
> 
> http://www.alunfoto.no/innhold/beetleface/
> 
> I have now worked through five of the old 4X microscope lenses Mike W. 
> brought me, and found that none of them can match the detail resolution of a 
> reversed Pentax-M 28mm f/2.8 stopped down to f/5.6. The Pentax is a little 
> soft in the contrast rendering, though, so maybe the A-series edition is 
> better.
> 
> To explore further options, a Pentax-K 24mm f/3.5 has just been ordered 
> through eBay. :-)
> 
> Interesting times. Another, more systematic study of the 10X lenses coming 
> up, but not in a couple of weeks. School has just started here, and I'm busy 
> getting to know my new students.
> 
> Jostein
> 
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Re: PESO - Beetleface

2016-08-15 Thread Daniel J. Matyola 
Good, strong, sharp image.  You are doing impressive work on these
critters, Jostein.

Dan Matyola
http://www.pentaxphotogallery.com/danieljmatyola

On Mon, Aug 15, 2016 at 3:21 PM, Jostein  wrote:

> One more in the category of tiny monsters.
>
> http://www.alunfoto.no/innhold/beetleface/
>
> I have now worked through five of the old 4X microscope lenses Mike W.
> brought me, and found that none of them can match the detail resolution of
> a reversed Pentax-M 28mm f/2.8 stopped down to f/5.6. The Pentax is a
> little soft in the contrast rendering, though, so maybe the A-series
> edition is better.
>
> To explore further options, a Pentax-K 24mm f/3.5 has just been ordered
> through eBay. :-)
>
> Interesting times. Another, more systematic study of the 10X lenses coming
> up, but not in a couple of weeks. School has just started here, and I'm
> busy getting to know my new students.
>
> Jostein
>
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Re: PESO - Beetleface

2016-08-15 Thread Jostein 

Lol. Hopefully with less hair on their chests.

Thanks Bob.
Jostein

Den 15.08.2016 21.32, skrev Bob W-PDML:

Beautiful photo. I hope your new students are as good-looking.

It may be the face of God:

http://www.philly.com/philly/blogs/evolution/New-Evidence-that-God-had-an-Inordinate-Fondness-for-Beetles.html

B


On 15 Aug 2016, at 20:22, Jostein  wrote:

One more in the category of tiny monsters.

http://www.alunfoto.no/innhold/beetleface/






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Re: PESO - Beetleface

2016-08-15 Thread Bob W-PDML 
Beautiful photo. I hope your new students are as good-looking.

It may be the face of God:

http://www.philly.com/philly/blogs/evolution/New-Evidence-that-God-had-an-Inordinate-Fondness-for-Beetles.html

B

> On 15 Aug 2016, at 20:22, Jostein  wrote:
> 
> One more in the category of tiny monsters.
> 
> http://www.alunfoto.no/innhold/beetleface/
> 
> 

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PESO - Beetleface

2016-08-15 Thread Jostein 

One more in the category of tiny monsters.

http://www.alunfoto.no/innhold/beetleface/

I have now worked through five of the old 4X microscope lenses Mike W. 
brought me, and found that none of them can match the detail resolution 
of a reversed Pentax-M 28mm f/2.8 stopped down to f/5.6. The Pentax is a 
little soft in the contrast rendering, though, so maybe the A-series 
edition is better.


To explore further options, a Pentax-K 24mm f/3.5 has just been ordered 
through eBay. :-)


Interesting times. Another, more systematic study of the 10X lenses 
coming up, but not in a couple of weeks. School has just started here, 
and I'm busy getting to know my new students.


Jostein

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