At what zoom points does the lens force a stop down? Is it only 2.8 at the 50mm end?
182581
It is 2.8 at 50mm and 3.5 at 200. The scale is fairly linear - it is about f3.0 at 135mm Sharpest at f4 and still quite sharp wide open.
182582
It is 2.8 at 50mm and 3.5 at 200.The scale is fairly linear - it is about f3.0 at 135mmSharpest at f4 and still quite sharp wide open.
2103646
it will depend on the quality of the light, much light will have a higher f-stop, less light will have a lower f-stop, since you fixed the iso to 400 and the lens even though is a 50 mm lens with the extension tubes you transformed it to a 136mm lens and we have no idea of the capacity of that 50mm lens on f-stops, it could be a 1.2 fstops? 1.4? 1.8? whats the fisical limits of that 50mm lens? the variables left are f-stops, and that will changes depending on the light. the formula for f-stops is focal length/diameter= fstops136mm/50mm=2.72 f-stops
994207
The 2 lenses are good, but the main difference is on how sensitive the lens is. In the one i bought, it's lowest f-stop is 4. you need more light for avoiding grain. The one you are referring to works better in a low light condition (f 2.8).
678607
I use the 2.8 and have never been concerned about the weight. I used this lens on my Canon 5D with the extender 1.4 for a two hour whale watch trip from a boat, hand held. I didn't find it a concern. I'm a 5' 11", 200 lb man and 70 years old. I'm saying go for the f/2.8, you won't regret it.
510274
Hi, its 49mm filter thread and it rotates when zooming. It is manual focus but has contacts for aperture control in camera ("A" in the name) , it is lightweight and more thin than modern lenses. Nice glass for its price.
1675352
There is a Macro Mode option. How close you can get to your subject depends on the zoom setting. It ranges from 0.4 inches to 2.0 inches from the lens, according to the user manual.
1551101
That is exactly why I purchased this lens and I love it! The focus is a bit soft if you try and go below f2.2, but as I'm generally shooting moving children I usually keep it around f2.5 or 2.8 anyway. Hope this helps!
1235278
Unlike a zoom lens with a range in f stops such as a zoom with f4 to f5.6 the minimum f stop can change with different zoom settings. There are zoom lenses with constant f2.8 that can be set to an f2.8 at all zoom ranges. This lens is not a zoom lens but a fixed focal length. The minimum f stop of 2.8 can be set so it would be the same at any distance shot if one is using the aperture setting (AV) or manual setting (M). However if one has the camera at program (P) or speed (TV) settings and the lighting is different the lens will automatically change the aperture for the scene depending on the brightness of the subject in the frame.
2203916
It is a 500mm lens with a 2x adapter. Manual focus and at f/8 really only good with lots of light. But fun to play around with and compact in size, limited uses.
1054578
The aperture control works even with manual lenses,No problems with the 50mm 1.8, It'll work
1394636
Like the rest of the comments, you are right, it will become a 48mm lens, pretty close to what you see is what you get through the viewer. I did notice the lens it has a unique sound when it is focusing. it is pretty cool. I been using this lens for a while now, and it took me a little to get use to it. (I normally shoot with a 18- 200 zoom) so moving forward and backward to get the shot took some getting use to.
1838718
M. Clouse, I have both the 35mm L lens and the 50mm non-L lens. Like you, I love the 50mm lens but it is not sharp wide open. It sharpens up pretty well in the center by f/2.8, but the corners are soft even at f/5.6. The 35mm L lens is not in the same league. It is almost 4 times as expensive, built like a tank, has a completely different lens formula, ring USM focusing system rather than the old design in the 50mm, and is sharp at f/1.4 even out to the edge of the field. Like the 50mm, it gets a little sharper stopped down, but it is so sharp at f/1.4, there is not much room for improvement. You will not be disappointed with the 35mm L. It is a very fine lens optically and mechanically. M. Clouse, I have both the 35mm L lens and the 50mm non-L lens. Like you, I love the 50mm lens but it is not sharp wide open. It sharpens up pretty well in the center by f/2.8, but the corners are soft even at f/5.6. The 35mm L lens is not in the same league. It is almost 4 times as expensive, built like a tank, has a completely different lens formula, ring USM focusing system rather than the old design in the 50mm, and is sharp at f/1.4 even out to the edge of the field. Like the 50mm, it gets a little sharper stopped down, but it is so sharp at f/1.4, there is not much room for... » Read More M. Clouse, I have both the 35mm L lens and the 50mm non-L lens. Like you, I love the 50mm lens but it is not sharp wide open. It sharpens up pretty well in the center by f/2.8, but the corners are soft even at f/5.6. The 35mm L lens is not in the same league. It is almost 4 times as expensive, built like a tank, has a completely different lens formula, ring USM focusing system rather than the old design in the 50mm, and is sharp at f/1.4 even out to the edge of the field. Like the 50mm, it gets a little sharper stopped down, but it is so sharp at f/1.4, there is not much room for improvement. You will not be disappointed with the 35mm L. It is a very fine lens optically and mechanically. « Show Less
208657
It appears to be the 200 mm. I have not measured exactly per say but it does zoom out that much and it works really well. I keep it on my camera unless I am doing some macro work.
358177
completely different lenses, especially for full frame. Why do you have a 50 f/1.8 on a 6D? that's almost a toy lens on a near professional camera. Although I don't have a full frame camera, if I did, I'd get the 24-70 L Zoom. If price is the issue, get the 24 2.8 IS for outdoor, landscape work and a 50 mm 1.4 for indoors, portraits, everyday use. Another nice lens is the 35 mm f/2 IS. bit wider, very sharp, with IS.
552636
I had a Canon 50mm 2.5 macro ,it is real reliable, it is an older lens, very sharp also great for portrait work it creates a soft bokeh.
32351
Get the biggest (smallest f-stop) lens you can afford. If you get "close to the action" a 50mm ish is adequate. If you shoot from your seat in the middle of the theater, go 85mm ish. In my opinion (worth next to nothing) money on two f1.x fixed lenses is better spent than on an f2.x zoom.
1005552
ALL AF capable lenses that i've ever touched will allow you to rotate it past the two places where it should stop. The only lense i've ever handled that had a proper mechanical stop was made by Zeiss, i love them!