Depth of Field & Field of View
The following table will help you pick the proper close-up lens combination, based on required Field of View (FOV = picture width) at both extremes of the lens extension (Wide Angle and Telephoto). Depth of field (i.e. subject focus range) = Max(imum) - Min(imum). Your results may vary slightly.
| Close-up Settings (Measurements in Inches) |
Lens | Focus Distance (In.) | FOV (W/A) | FOV (Tele) |
+1 | Min | 11.00 | 10.75 | 4.00 |
| Mid | 13.00 | 12.50 | 4.50 |
| Max | 15.00 | 14.25 | 5.25 |
+2 | Min | 9.25 | 9.00 | 3.25 |
| Mid | 10.13 | 9.75 | 3.50 |
| Max | 11.00 | 10.50 | 3.75 |
+3 | Min | 7.00 | 7.00 | 2.50 |
| Mid | 7.75 | 7.50 | 2.75 |
| Max | 8.50 | 8.00 | 3.00 |
+4 | Min | 6.00 | 5.75 | 2.13 |
| Mid | 6.50 | 6.13 | 2.25 |
| Max | 7.00 | 6.50 | 2.38 |
+5 | Min | 5.00 | 4.88 | 1.88 |
| Mid | 5.50 | 5.38 | 2.00 |
| Max | 6.00 | 5.68 | 2.13 |
+6 | Min | 4.50 | 4.38 | 1.63 |
| Mid | 4.75 | 4.63 | 1.75 |
| Max | 5.00 | 4.75 | 1.88 |
+7 | Min | 4.13 | 4.13 | 1.50 |
| Mid | 4.30 | 4.25 | 1.55 |
| Max | 4.50 | 4.38 | 1.63 |
Email: phil@photosolve.com
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Xtend-a-Lens™290
for use with Kodak™ DC26X™ and DC290™ Digital Cameras
User Guide
Congratulations on your purchase of the "Xtend-a-Lens™ 290" adapter for Kodak DC26X and DC290 series digital cameras. It will change the way you take pictures.
Description
The Xtend-a-Lens is a rugged, precision optical device, constructed of anodized aluminum, which should provide years of useful service with your camera. The Xtend-a-Lens has a 49mm thread which accepts all 49mm filters and lens attachments. It will accommodate a standard 49mm lens cap as well, which is recommended if you are going to be leaving the Xtend-a-Lens installed for extended periods of time. It can be easily adapted to other thread pitch accessories (52mm, 58mm, etc.) through the use of a simple step-up or step down adapter, available in most photography stores.
Attaching Xtend-a-Lens to your camera
To ensure that you do not damage the lens of your camera during installation, turn the camera off, ensuring that the camera lens is fully retracted into the barrel. Install the adapter by holding your camera in one hand, the adapter in the other (with the gray rubber sleeve end facing the front of the camera), and gently twist the adapter onto the barrel attached to the camera. The adapter should slide all the way on to the camera. Once installed, the gray rubber sleeve provides an adequate connection to support most of your camera accessories.
Now, turn on your camera (in the “Capture” mode, which will cause the camera lens to extend part way), and ensure that the Xtend-a-Lens is properly centered on the lens barrel: look directly at the end of the adapter, and then at the lens. You should see the same amount of space all the way round the lens. To adjust, gently move the adapter until it’s centered (this process will ensure that the lens does not bind against the adapter when you move it in and out using the Wide Angle/Telephoto switch). Now you’re ready to add accessories.
Taking pictures with Xtend-a-Lens
Macro Lenses and Close-up Photography
Close-up lenses come in a variety of different flavors, however, the most common is a three lens set, consisting of +1, +2, and +4 (the
