Cp Goerz Berlin Serial Numbers
Goerz DagorC.P. Goerz Berlin Dopp-AnastigmaatSerie III Dagor.This is one of the most celebrated lens design ever. More than one hundred years after its introduction it is still a very usable lens.
It was in 1982 that a mathematician Emil von Hoegh, 27 years old, proposed to Zeiss this double anastigmat consisting of two triplets symmetrically arranged around the f stop. Zeiss was not interested, maybe because two years earlier they had launched their own anastigmat. So Emil took it to the also very young firm Goerz in Berlin. Only four years old, Goerz was producing a Rapid Rectilinear lens called Lynkeioskop, one of the best RR versions. That was the beginning of a huge success. By 1895 some 30.000 had been already sold.
The name Dagor was adopted only in 1904 and the design was licensed to almost every lens maker ever since.It is a convertible lens. That means one can use only one cell placed behind the iris.
In that case the combined foci is multiplied by 1,73, but as a trade off there is a significant loss in luminosity.Most of the above information I researched on 'A history of the photographic lens' by Rudolf Kingslake, Academic Press Inc. ISBN 0-12-408640-3. It is an excellent source for understanding the genealogy of most of the lenses ever produced and the problems associated to lens construction.If you want something online: download the 'A Lens Collector Vade Mecum' it is only 15,99 USD and an invaluable source of information. Go to: It has more than 700 pages with thousands of lenses description, pictures and diagrams.This Dagor, is from 1911.
I bought it in a shoe box together with a Voigtlander Orthoscop from 1858, a Tessar also from 1911 and a Rodenstock Rapid Aplanat #2 from 1910/20. Also some parts of rollerblind shutters and lens elements, that I could not identify, were in the pack. The origin was Santos, a harbor city, 60 Km from Sao Paulo. I tried to trace it back, tried to know to whom in belonged, but the seller, having an antique shop there, could not remember how it all arrived to his hands.These figures indicating aperture are not the familiar series we are used to see in 35 mm cameras. Goerz used a special scale. In the chart below we can see the equivalents to the system using 4 - 5.6 - 8 - 11 - 16 - 22 - 32 - 45.The 4,5 (that is not in the chart) means 6.8.
In the lens ring it is marked 1:6,8 but as the scale shows it as 4,5 I started to wonder if the cells would have been mounted in a barrel afterwards. But note in the picture below that the serial number is the same engraved on the barrel and on the cells.So f6,8 or 1:6,8 is the lager aperture for this lens. The following figures, even in this Goerz scale, are very close to the regular series of f stops.The next 3 pictures are from the Photo Club de Paris magazine in 1899. The name Dagor was not used yet. It was referred as Double Anastigmat Goerz. If you want an explanation of what problem the Anastigmats solved, go to my page about theSome contemporaneous ads from the other side of the Atlantic.Adversing in Photominiature April 1899Adversing in Photominiature December 1909Adversing in Photominiature Feb 1900The following reproductions from Goerz catalogs, and a lot more from other lens/camera makers, you can find at website. Excellent online source.These are both from the 1913 Goerz catalog.The three above from the 1940 catalogThe next picture is a zoom into Felipe s left eye.
You can compare with the whole picture made in a 4x5 negative by clicking the thumbnail below. The film was Tri-X shot as 320 ASA, aperture was equivalent to f16, developed 8 minutes in at 23 Celsius. It gives an idea of Dagors capability in rendering fine details.But if you want to check a serious experience that definitely prove it, go to:You will see a Dagor 19 inches there, and the result one can still reach with a lens from 1905.
General delivery information available from the auctioneerHansons Auctioneers offers an in-house postal service for clients who are unable to attend the auction or collect.contactIf items need to be sent abroad we shall assess these on an individual basis. Depending on the object and worth/size of parcel, Hansons will recommend using one of our couriers if we are unable to post your item in-house. We reserve the rights not to post items abroad if we deem unfit and think it will break.We are not professional packers or shippers but do our utmost to pack items in a correct way which will ensure items arrive safely. However, Hansons Auctioneers will not be held responsible for making any claim.
We may be able to make claims with Royal Mail or Parcelforce but cannot guarantee this.There are some items that, due to their nature, size or weight, we cannot post out. However, we can recommend couriers and you can arrange for them to pick the item up from our saleroom/ London Office. They will also be able to insure some items which we are unable to insure.RECOMMENDED COURIERS:Mailboxes Nottingham, +44 (0) 1159 472 779Advance Forwarding +44 (0)1332 865 656IJK Couriers (Contact Ian Kent) 2London Clients:Auction Logistics (Mailboxes) 0871 221 1233 auctionlogisticsenquiries@mbe.uk (internet buyers can request direct delivery from their Saleroom.com account)For a complete guide to our postage capabilities please view our postage pages on our website:https://hansonsauctioneers.co.uk/page/postage.
PLEASE NOTE THAT OUR MILITARIA IMAGES WILL BE GOING ONLINE IN THE NEXT 72 HOURS.STORAGE FURNITURE CHARGES WILL BE APPLIED WITHOUT EXCEPTION IF TERMS ARE NOT MET.All buyers will be sent a payment request where possible via email, telephone payments are no longer accepted. A bank payment or payment in person are accepted alternatives.Buyers Premium is 17.5%.(+vat) + 5%(+vat) Internet Charge Minimum Lot Fee £5(+vat)Payment and Collection for smalls is required within 5 working days from the end of the Sale.Furniture must be paid and collected within 3 working days of its sale date.Storage Charges for smalls will be levied at £1 per lot per day if not collected within the 5 working days. Furniture must be collected within 3 working days storage charges will be levied at £5 per lot per day.Hansons advises that the auctioneer will commence and advance bidding at levels and increments he considers appropriate and is entitled to place a bid or series of bids on behalf of the Seller up to the reserve on the lot, without indicating he is doing so and whether or not other bids are placed.Terms & Conditions. Terms and Conditions of Business for BuyersCare is taken to ensure that any statements as to authorship, attribution, origin, date, age, provenance and condition are reliable and accurate, but all such statements are statements of opinion and are not to be taken as statements or representations of fact. Hansons reserve the right, in forming their opinion, to consult and rely upon any expert or authority reasonably considered by them to be reliable. All clients are advised they are entering into a contract with Hansons Auctioneers and Valuers under English Law and Jurisdiction.1. The BuyerThe highest bidder to be the buyer.
If any dispute arises, the auctioneer shall have absolute discretion to settle it and to put any disputed lot up again for sale.2. Buyer IdentificationBuyers are requested to furnish references in advance of the sale in order to avoid delay in clearing purchases. Goods will not be cleared until such references have been processed or cheques cleared. Hanson’s reserve the right not to approve any online bidder when their registration credit check is not successful and who cannot provide references. Hansons will not accept commission bids for any buyer that has an outstanding invoice.3.
Buyer’s PremiumThe buyer shall pay the hammer price together with a buyer’s premium at the rate of 17.5% plus VAT. Please note that there is a minimum purchase charge of £5 plus VAT. Internet bidding incurs an additional 5% plus VAT charge.VAT is charged on Hanson’s services NOT on the goods and is payable at the standard rate set by the UK government.Any royalties eligible to be paid to a qualifying artist under the ‘Droit de Suite’ legislation will be added to the buyers invoice4.
PaymentImmediately on the fall of the hammer, all lots shall be at the sole risk and expense of the respective purchasersAll buyers you will be sent a payment request where possible via email, telephone payments are no longer accepted. A bank payment or payment in person are accepted alternatives.All Bidders need to pay and arrange collection of smalls within 5 working days of the auction.Furniture buyers need to pay and collect within 3 working days of its sale day.Failure to pay for goods within six weeks of the auction will result in the sale being rescinded. The defaulting buyer will also be blocked from bidding at future Hansons auctions.Methods of PaymentCash, debit card, credit card or direct bank payment.UK Debit cards incur no extra charge. All credit and international debit cards incur an additional 3% charge.Personal cheques will only be accepted at the discretion of Hanson’s Accounts and on the understanding that NO goods will be released until bank clearance of the cheque has completed.6.
Collection / Shipment of GoodsAll small goods must be paid for and collected within five working days following sale.Furniture must be paid for and collected within 3 working days. If after the alloted time the item has not been collected then a storage charge of £1 per lot for smalls and £5 per lot for furniture per day will commence, the item will also no longer be insured. Hansons shall then contact the buyer in writing to confirm that this additional charge is now in place and further to that if paid for item(s) are still not collected within another 3 weeks of the date on the letter, the items will be placed back into the next auction without reserve with the buyer becoming the vendor. All Hansons terms and conditions will now apply to the new vendor of this item. A cheque will be sent out 20 working days after the sale, this will be minus our saleroom and storage charges.7. Postal ServiceHansons Auctioneers do offer a postal service for clients within the UK who are not able to attend the auction or unable to collect.
We are not professional packers or shippers, though we will try our best to pack items in a correct way which will ensure items arrive safely. However Hansons Auctioneers do not insure items posted and therefore will not be held responsible for making any claim for damage. There are some items that due to their nature, size or weight we cannot post out, but we can recommend couriers who you can arrange to pick the item up from our saleroom.
David Goerz
They may also be able to insure some items which we are unable to insure. For full details see ‘Postage of items’ under ‘Our Services’ on the Hansons website.8. All buyers / couriers must check their purchases prior to departure from the auction. Hansons will accept no claims for loss or damage thereafter.9. Third Party LiabilityEvery person at Hansons Auctions shall be deemed to be there at his own risk. They shall have no claim against Hansons in respect to any accident which may occur or injury, damage or loss howsoever caused.10. Rights of AdmissionThe right is reserved to refuse admission to the auction premises and may be used by Hansons without giving a reason.11.
Selling RateLots are sold at approximately 100 lots per hour. General delivery information available from the auctioneerHansons Auctioneers offers an in-house postal service for clients who are unable to attend the auction or collect.contactIf items need to be sent abroad we shall assess these on an individual basis. Depending on the object and worth/size of parcel, Hansons will recommend using one of our couriers if we are unable to post your item in-house. We reserve the rights not to post items abroad if we deem unfit and think it will break.We are not professional packers or shippers but do our utmost to pack items in a correct way which will ensure items arrive safely. However, Hansons Auctioneers will not be held responsible for making any claim.
We may be able to make claims with Royal Mail or Parcelforce but cannot guarantee this.There are some items that, due to their nature, size or weight, we cannot post out. However, we can recommend couriers and you can arrange for them to pick the item up from our saleroom/ London Office. They will also be able to insure some items which we are unable to insure.RECOMMENDED COURIERS:Mailboxes Nottingham, +44 (0) 1159 472 779Advance Forwarding +44 (0)1332 865 656IJK Couriers (Contact Ian Kent) 2London Clients:Auction Logistics (Mailboxes) 0871 221 1233 auctionlogisticsenquiries@mbe.uk (internet buyers can request direct delivery from their Saleroom.com account)For a complete guide to our postage capabilities please view our postage pages on our website:https://hansonsauctioneers.co.uk/page/postage. PLEASE NOTE THAT OUR MILITARIA IMAGES WILL BE GOING ONLINE IN THE NEXT 72 HOURS.STORAGE FURNITURE CHARGES WILL BE APPLIED WITHOUT EXCEPTION IF TERMS ARE NOT MET.All buyers will be sent a payment request where possible via email, telephone payments are no longer accepted. A bank payment or payment in person are accepted alternatives.Buyers Premium is 17.5%.(+vat) + 5%(+vat) Internet Charge Minimum Lot Fee £5(+vat)Payment and Collection for smalls is required within 5 working days from the end of the Sale.Furniture must be paid and collected within 3 working days of its sale date.Storage Charges for smalls will be levied at £1 per lot per day if not collected within the 5 working days. Furniture must be collected within 3 working days storage charges will be levied at £5 per lot per day.Hansons advises that the auctioneer will commence and advance bidding at levels and increments he considers appropriate and is entitled to place a bid or series of bids on behalf of the Seller up to the reserve on the lot, without indicating he is doing so and whether or not other bids are placed.Terms & Conditions.
Terms and Conditions of Business for BuyersCare is taken to ensure that any statements as to authorship, attribution, origin, date, age, provenance and condition are reliable and accurate, but all such statements are statements of opinion and are not to be taken as statements or representations of fact. Hansons reserve the right, in forming their opinion, to consult and rely upon any expert or authority reasonably considered by them to be reliable. All clients are advised they are entering into a contract with Hansons Auctioneers and Valuers under English Law and Jurisdiction.1. The BuyerThe highest bidder to be the buyer. If any dispute arises, the auctioneer shall have absolute discretion to settle it and to put any disputed lot up again for sale.2.
Buyer IdentificationBuyers are requested to furnish references in advance of the sale in order to avoid delay in clearing purchases. Goods will not be cleared until such references have been processed or cheques cleared. Hanson’s reserve the right not to approve any online bidder when their registration credit check is not successful and who cannot provide references. Hansons will not accept commission bids for any buyer that has an outstanding invoice.3. Buyer’s PremiumThe buyer shall pay the hammer price together with a buyer’s premium at the rate of 17.5% plus VAT.
Cp Goerz Berlin Serial Numbers
Please note that there is a minimum purchase charge of £5 plus VAT. Internet bidding incurs an additional 5% plus VAT charge.VAT is charged on Hanson’s services NOT on the goods and is payable at the standard rate set by the UK government.Any royalties eligible to be paid to a qualifying artist under the ‘Droit de Suite’ legislation will be added to the buyers invoice4. PaymentImmediately on the fall of the hammer, all lots shall be at the sole risk and expense of the respective purchasersAll buyers you will be sent a payment request where possible via email, telephone payments are no longer accepted. A bank payment or payment in person are accepted alternatives.All Bidders need to pay and arrange collection of smalls within 5 working days of the auction.Furniture buyers need to pay and collect within 3 working days of its sale day.Failure to pay for goods within six weeks of the auction will result in the sale being rescinded. The defaulting buyer will also be blocked from bidding at future Hansons auctions.Methods of PaymentCash, debit card, credit card or direct bank payment.UK Debit cards incur no extra charge.
All credit and international debit cards incur an additional 3% charge.Personal cheques will only be accepted at the discretion of Hanson’s Accounts and on the understanding that NO goods will be released until bank clearance of the cheque has completed.6. Collection / Shipment of GoodsAll small goods must be paid for and collected within five working days following sale.Furniture must be paid for and collected within 3 working days. If after the alloted time the item has not been collected then a storage charge of £1 per lot for smalls and £5 per lot for furniture per day will commence, the item will also no longer be insured. Hansons shall then contact the buyer in writing to confirm that this additional charge is now in place and further to that if paid for item(s) are still not collected within another 3 weeks of the date on the letter, the items will be placed back into the next auction without reserve with the buyer becoming the vendor. All Hansons terms and conditions will now apply to the new vendor of this item. A cheque will be sent out 20 working days after the sale, this will be minus our saleroom and storage charges.7. Postal ServiceHansons Auctioneers do offer a postal service for clients within the UK who are not able to attend the auction or unable to collect.
We are not professional packers or shippers, though we will try our best to pack items in a correct way which will ensure items arrive safely. However Hansons Auctioneers do not insure items posted and therefore will not be held responsible for making any claim for damage. There are some items that due to their nature, size or weight we cannot post out, but we can recommend couriers who you can arrange to pick the item up from our saleroom. They may also be able to insure some items which we are unable to insure. For full details see ‘Postage of items’ under ‘Our Services’ on the Hansons website.8. All buyers / couriers must check their purchases prior to departure from the auction.
Hansons will accept no claims for loss or damage thereafter.9. Third Party LiabilityEvery person at Hansons Auctions shall be deemed to be there at his own risk. They shall have no claim against Hansons in respect to any accident which may occur or injury, damage or loss howsoever caused.10. Rights of AdmissionThe right is reserved to refuse admission to the auction premises and may be used by Hansons without giving a reason.11. Selling RateLots are sold at approximately 100 lots per hour.