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#16 ;)

Rudi, just saw this...

As far as I know there are only two types 150mm "Amateur" Hermagis Eidoscopes, the 1:4.7 and the 1:4.5. Both were produced and sold at the same time. The choice between...

Congrats Garrett. Impressive!

BTW, did I guess right? ;)

LOL No, I measured from the ground glass to the Waterhouse slot.

Yesss, I have a 15" Voigtlander! :)

Dan, measuring extra carefully back focus is 11 5/8".

If I add the distance to the slot (3 1/2") focal length is 15 1/8". That is much closer to a #6 (14 5/8") than to a #7 (18 3/8").
If I add...

Hi Dan, combined focus confuses me too. I think what is meant is the focal length measured from the Waterhouse slot. That is where I got my 16" focal length from. The distance from the slot to the...

Hmmm, I may have to rearrange my lens hoarding priorities. I have a museum quality Hermagis in its original box that I never use. But this Voigtlander ticks many more boxes from a photographer's...

Jim, I know. And I am thankful for that. But somehow I had expected German lenses to be documented better. Simply because they are, well, German. And this is meant in an absolutely positive and...

Thanks Garrett and Steven. So, only half a thumb up for old Voigtlander catalogs :p

I found the lens pictured below a few days ago. It is a large(ish) Voigtlander Petzval lens that, according to Dan's list of serial numbers, can be dated to 1863.

The lens is 28 cm tall (11") and...

Congrats Kasia and well done Steven!

Congrats Ben and Justin,

Great Kickstarter project! I never had so much fun with a camera that isn't even built yet. :)

Yay, I am a super early bird too... Number 13, I think! :-)

Maurits

Okay, I will bite (a bit),

Your lens hood looks like it is mounted reversed.

1. Your lens could very well be a Petzval design, it could also be a magic lantern lens. It can be both. None of...

Hey Garrett, yep I was a first hand witness! Saw you buy it and heroically trying to sell it there too. The classic...

I agree with Ian and Jim.

For someone from Europe, looking for a sturdy vintage 8x10 camera this is really not an unrealistic price.

I once put my 2D on my table at a Dutch camera show. More...

Thanks Dan! What Rudi says... Much appreciated.

Cheers, Maurits

Hi Steven, no I don't. Maybe Paolo knows a bit more? I think he has been in regular contact with the author.

Jon, I wrote a short review about this book. Like everything, it has some flaws. I do however really recommend it...
...

Kent, 3x3 inches is typical for individual images on a 3 1/4 x 6 3/4 stereo card. This might be one of a stereo pair.

Check this one at the George Eastman House:...

In honor of the seventh season of the tv-series "Dexter"... :p

Self-portrait as Dexter.

81515

4x5 wet plate collodion tin type, Hermagis 160 mm Objectif à Transformations No. 5. (in all...

Disk 3 H=9,5 - H=11,5

81513 81514

Hope this helps!


Maurits

Disk 2 H=7,7 - H=9,5

81511 81512

Disk 1 H=5,8 - H=7,7

81509 81510

Frank, here's a sequence of test shots I made with an Imagon 250 mm H=5,8 about a year ago.

In all, the aperture of the Compound shutter was left wide open. The first image was made without a...

The examples above are mostly late 1850's lenses. I think it is reasonable to assume that it took a while before most lens makers adopted the Waterhouse solution. So even in 1860, many lenses were...

On the left the internal disk aperture from an early Alexis Millet internal bayonet mini-cone lens. In the middle a Darlot cone lens with a disk aperture installed. On the right the bayonet front...

Mark, Garrett, I have two pre-Waterhouse Hermagis convertible lenses that use internal aperture disks.

The big lens on the left and in the middle has a set of small aperture disks to install in...

Eddie, yes you have this book... :) We bought it at the same time.

What I could do is, next time there is a big antique camera show and the author is present, just buy a couple of books and send...

Eddie, it looks like someone stuck the rear flint up front. Even the little pin from the soft focus setting is visible... And then they shoe-horned the rear crown into the back and glued it......

Hi Kasia, good to see you over here too... :)

Finding that element will probably be an extreme long shot. But show us what you do have (carefully unscrew those lens elements) and the people here...

.
I did a short review of Corrado D'Agostini's book: Photographic Lenses of the 1800′s in France.

Like everything, it has some flaws. I do however really recommend it...
...

Thanks fellas!

Sorry Sergei, my website is only a bit more than half a year old. There are not that many posts yet. Posting is more work than I thought... :-)

Most of the posts are about...

Thanks all!

Ramiro, beautiful. Keep your daughter's portrait like it is, just perfect.

From this week, a bit cleaner (modern lens) and not a colleague but simply a nice guy...
...

Dan, besides old brochures there is another booklet with an example of the Wallet lens Alex is referring to:

1839 1939 Un Siecle d'Objectifs Photographiques Francais
Hermagis Opticiens 1845-1934...

Another colleague looking stern on purpose... :) Hermagis Portrait Petzval No. 5 on 4x5.

http://mauritsbollen.com/wp-content/uploads/2012/02/lisa.jpg

Maurits

Gliderbee, Eidoscope No. 3 is a 275 mm focal length lens that covers 5x7" film and smaller. It is great on 4x5".

Yours was made somewhere in between 1900 and 1910. The largest aperture of the...

@ Jay Thanks and you are right! I only made two cardboard Waterhouse stops, so that was all I could do then and there. But when you choose for sharpness, all significant elements should be in focus....

Another collegue...

http://www.mauritsbollen.com/files/images/m_001_small.jpg

Hermagis 9" Petzval (stopped down a wee bit, sorry) on 4x5"

@cyberjunkie

Right, it's a jpeg not a pdf...

http://www.mauritsbollen.com/files/docs/Imagon_03.jpg

Cheers, Maurits