Description: 1921 C.P. GOERZ Berlin Dogmar 1:4.5 F=15cm Barrel Lens, Tested Dogmar 1:4.5 F=15cm barrel lens. Lens serial number 469063. Made by C.P. Goerz, Berlin, in 1921. Dimensions:max. diameter 65.9 mmheight 33.8 mmouter thread diameter 53.4 mmTo determine the optical performance of the lens, it was mounted in front of a 24 MPixel Nikon D7100 digital camera. The set-up is shown in image #6.The D7100 was set to manual focus and manual shutter setting. For the lens diaphragm fully open, image #7 shows the result (reduced to eBay's maximum pixel size of 1600). Image #8 shows the center of that same image at the full resolution of the D7100. The image is somewhat soft. As expected, the resolution of the lens improves when stopping it down. Images #8 and #9 show the results at a diaphragm setting 1:12.5. The lens is in good condition. Glass is generally in good condition. Diaphragm moves smoothly. The shutter works at all settings. The optical quality is quite good as demonstrated by the digital camera test.Included is an adapter ring which happens to have the same thread as the lens (see image #5). This may help to attach the lens to a lens board. Buyer to pay actual USPS shipping cost (no handling fee). Estimated shipping weight is 1 pound. I would be happy to combine several items in one shipment to reduce your shipping costs. Happy bidding!
Price: 119.99 USD
Location: Charlottesville, Virginia
End Time: 2024-10-01T18:25:01.000Z
Shipping Cost: N/A USD
Product Images
Item Specifics
Restocking Fee: No
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 14 Days
Refund will be given as: Money Back
Maximum Aperture: f/4.5
Compatible Brand: n.a.
Mount: Thread mounted
Focal Length: 15cm
Exterior Material: Brass
Brand: Goerz
Series: Goerz lenses
Type: High Quality, Standard
Unit Type: Unit
Focus Type: Manual
Model: Anastigmat Ektar
Compatible Filter Size: 45mm push-on
Country/Region of Manufacture: Germany
Unit Quantity: 1
