What is the diameter of the aperture?
2059963
1 3/4" diameter of opening to the outside of the VERY thin glass, unable to bend the metal measuring tape for accurate inside diameter, but my guess would be that the glass itself is only about 1/16-1/32 of an inch thick.
1603182
Diameter of the lens is about 3-1/2". Lamp is battery operated, turned out to be terrific to have in a power outage.
290031
If I measured correctly it's 1.5 inches. Like I said I'm still trying to learn how to use it. I haven't had much experience with optics
545495
Since I don't own these lens, I can't tell exactly, but if you give us outer diameter of our lenses, we can check
3335
52mm is the thread size. Just simply look on the end of your lens, there should be a circle with a dash through it, that's the filter diameter measurement.
1198221
The size will be the size of lenses filter diameter. The hood should be checked at various focal lengths to determine if image cut-off occurs.
1201394
i have no way to measure currently but it is very thin aluminum, so approx. 50mm(lens) + .032"ish sheet metal = a few hairs+/- wider than 50mm.51mm?
1770040
Thank you for your inquiry. In regards to your question, the minimum aperture of this lens is f/22. Maximum being f/1.8, if you have any additional questions or concerns please feel free to contact us directly at 800-991-3350.
743733
Sorry it took me so long to respond. I left it at work! The diameter of larger part is approximately 4 inches. The smaller greater magnification part just under an inch. Still working great!
431324
Actually, a SMALLER APERTURE would have a HIGHER NUMBER...like f/11. The f/numbers are FRACTIONS, so a bigger number is a smaller aperture, and a smaller number is a bigger aperture...just a 1/2 OF AN APPLE PIE (f/2) IS BIGGER THAN 1/8 OF APPLE PIE (f/8).To get a smaller aperture (the hole the light enters), you need to pay more money, and get a lens with a bigger aperture number...like f/8, f/11, or f/22.I have seen many f/2.4 lenses (notice the decimal point between the 2 and the 4). I have never seen, or heard of, an f/24 lens...but I suppose someone may make them. There are f/22 lenses available. Actually, a SMALLER APERTURE would have a HIGHER NUMBER...like f/11. The f/numbers are FRACTIONS, so a bigger number is a smaller aperture, and a smaller number is a bigger aperture...just a 1/2 OF AN APPLE PIE (f/2) IS BIGGER THAN 1/8 OF APPLE PIE (f/8).To get a smaller aperture (the hole the light enters), you need to pay more money, and get a lens with a bigger aperture number...like f/8, f/11, or f/22.I have seen many f/2.4 lenses (notice the decimal point between the 2 and the 4). I have never seen, or heard of, an f/24 lens...but I suppose someone may make... » Read More Actually, a SMALLER APERTURE would have a HIGHER NUMBER...like f/11. The f/numbers are FRACTIONS, so a bigger number is a smaller aperture, and a smaller number is a bigger aperture...just a 1/2 OF AN APPLE PIE (f/2) IS BIGGER THAN 1/8 OF APPLE PIE (f/8).To get a smaller aperture (the hole the light enters), you need to pay more money, and get a lens with a bigger aperture number...like f/8, f/11, or f/22.I have seen many f/2.4 lenses (notice the decimal point between the 2 and the 4). I have never seen, or heard of, an f/24 lens...but I suppose someone may make them. There are f/22 lenses available. « Show Less
1753067
The length is about 54 in, and the inner diameter of the hole is about 1 in. The diameter is actually a little less than 3.25 in. It's more like 3.1 in. It's hard to say because they don't stay perfectly round.
1659771
Aperture is adjusted with the silver ring shown in the photo. No markings designating wide open or closed which is annoying, however it effectively 'de-clicks' your nikon lens which is handy.
1619658
Just measured the Ultrafire it measures 5 1/2 inches closed, and 6 1/4 with lens extended.
1198219
Your lens should say what distance it is accross the lens (diameter) or you can measure it.
693748
Overall diameter is 4" and is designed to fit into the standard dash opening. It was an excellent choice on my part, I'm extremely happy with it.
255632
No not recommended. It will fit but will stay at smallest aperture which would make it useless
617153
Can't answer in millimeters but its 1 7/8 between center of hole to center of hole. Hope that helps