220 mm², is approximately 30% less than the APS-C sensors used in other manufacturers' DSLRs; it is around 9 times larger than the 1/2.3" sensors typically used in compact digital cameras. Find the right lens quickly & easily with the Kowa lens calculator. Calculate focal length, field of view or working distance. This online calculator allows you to calculate the 35mm equivalent Focal Length for a specific sensor size. The following table can be used as an indication for the opening angle at specific focal lengths and sensor size. Select the sensor either by size or by manufacturer and model by using one of the two drop down menus below Sensor Size For example: A 1″ format sensor with 4:3 aspect ratio is 12.8mm Horizonal * 9.6mm Vertical * 16mm Diagonal Illustration depicts viewable area relative to a traditional 35 mm stills photography sensor by default, but other reference sensors are selectable within the drop-down menu. A 21mm at T2.8 will always be a 21mm at T2.8, whether it’s on a 70mm camera, a Red Dragon, or a Super 35 cam - era. Please don’t base your purchase decision on … Pixel-scale (the subject of this calculator) is arguably the most important factor to consider when choosing a camera for your telescope, but there are others: sensor size, sensitivity, dark current, read noise, anti blooming, etc. 35mm equivalent Focal Length Multiplier Calculator. SENSOR SIZE & DEPTH OF FIELD Sensor size has no effect on the depth of field. The image sensor of Four Thirds and MFT measures 18 mm × 13.5 mm (22.5 mm diagonal), with an imaging area of 17.3 mm × 13.0 mm (21.6 mm diagonal), comparable to the frame size of 110 film. Please note that these are just an indication and not exact values. Lens Multiplication Factor Calculator. Calculating the object size using the reproduction scale (macro & telecentric lenses) Also for macro lenses and telecentric lenses it is possible to calculate the field of view using the imaging scale and sensor size. Note: Even when using the drop-down lists own values can be entered. So, it's likely that the much larger sensor size and number of megapixels of the IQ180, both have a significant part to play in the big improvement in image quality of the IQ180 when compared with that of the A57. Calculate focal length, field of view or working distance. It is important to know that format sizes in inches might have different diagonal lengths depending on the sensor manufacturer. Its area, ca. Note that the sensor size of the Sony A57 is 23.5mm x 15.6mm, but the Phase One IQ180 has a sensor size of 53.7mm x 40.4mm. Even product marketing staff at major sensor manufacturers calculate, and list, the sensor size incorrectly. The values for the horizontal and vertical openings angle are provided. The format size of a digital camera sensor can be confusing. It is called this because when using a 35 mm lens, such a sensor effectively crops out this much of the image at its exterior (due to its limited size). Just enter the focal length and maximum aperture of your lens and then choose a sensor size. Calculate here. Object size y = sensor size y´ / imaging scale ß . Crop Factor Calculator Get the full-frame (35mm) equivalent focal length and aperture for different sensor sizes. Camera manufacturers will sometimes also list the diagonal length of the format size in millimeters. They all play a part. The sensor format size is shown in inches such as 1/3″, 1/2″, 1″, etc. However a 27 mm on a Red Dragon will give you the same Field of View as a 21 mm on Super 35, and using a longer lens gives you less depth of field. The relative size difference between two sensors is typically expressed as a "crop factor." The crop factor is the sensor's diagonal size compared to a full-frame 35 mm sensor.

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