What is the focal length?
386021
Not sure I understand your question. It doesn't magnify well if you lay it directly on the page. It requires holding it away, which doesn't allow hands free. But for the price, it's ok.
2217647
The focal length is only 35 max, you don't need IS at this point. The further the focal length goes, the more you need IS. Don't worry.
1635572
What I was told with 3.5X loupes is the focal distance should be at least 24-36". I must admit, I was "off" until I finally got myself to hold my head away from the patient at least that distance. Otherwise, everything is blurry. I'm also trying the 2.5x loupes now.
1694217
It appears the focal distance is about 10-12 feet; you will be unable to see any clear image nearer than that distance.
1891022
It really depends on the focal length of your lens. What type of lens do you have?
1632329
Hi, The focusing distance is always measured from the sensor. Therefore, subtract the distance from the sensor to the front of the lens barrel (approximately 3 inches), and you are left with actual "working distance" of about an inch. Hope that helps.
1869301
I measure from lens edge to lens edge as mounted in loupe. It's 3/4 of an inch. Or right around 19.4 mm. Actual useable lens.
84637
Close focus is 25 feet, a little fuzzy at 20 ft. I use mine to spot bullet holes in a target when shooting with iron sights at 50 yards. Works great!
84636
As far as I can research, it is 16.4 feet the close focus. A closer minimum close-focus distance usually means forfieting magnification. A closer minimum close-focus distance often means an reduction in overall image clarity.
599722
Per Nikon tech specs the lens focal length is 5.1mm to 25.5 mm which is equivalent to that of 24-120 mm lens in 35mm format. So the widest angle in 35mm format is 24mm.
1199562
Looks about 8" at 16mm and 4" at 300mm. Loving the lens so far BTW had been using the Canon 18-200EFS and the Tamron is WAY faster focusing with my 60D.
241619
About 6.5 inches long/width. 4.5 inches high. About 4 inches deep (lens when closed). Lens opens up to about 1 inch. Hope that helps.
912278
You divide the telephoto focal length of 55 by the wide angle focal length of 18, and you get about 3X. It is far from the mega zoom cameras that boast 30X, 50X, and even 60X zoom lenses, but remember that this camera has a APS-C sensor which is almost 13 times larger than most mega zoom cameras. In general, the larger the sensor, the better the image quality, although in well-lit pictures, it may not be very apparent.
1122556
This lens has a comparable focal length of 16 - 28.8mm in a 35mm equivalent. If you have any further questions or concerns, please don't hesitate to contact our sales department at 800-991-3350 EST. We thank you for your time and consideration!
920674
Somewhere around the 4 mark. It's such a great lens. I don't think you'll regret purchasing it, truly.
1433437
I would say at max zoom it extends to about 6 inches. I don't have it to measure. Search on youtube for some demonstrations, that is what I did. Great lens!
525547
I haven't used this lens in years but from memory I would say about 4-5 inches un-extended and about 7 inches zoomed out.