Does the 12-40mm lens hold focus through-out the zoom range?
1330833
To make sure I don't give the wrong answer, I mounted the 12-40mm lens onto my Lumix GX7and set to manual focus with focus-peaking turned on. After focusing on a subject and zooming back and forth I can confirm that the lens stayed in focus throughout the range.
1337319
No. It is a fixed lens. However, the zoom level makes it a good everyday lens
2252079
No. I have an old manual focus AI 35-105 and it is noticably sharper and contrasty compared to my 24-120. It is a good general lens but I still favour fixed focal over this zoom.
1117321
I have one. For the price... it is a great lens. Make sure it is well mounted and set camera to high contrast and max sharp. Don't run it more than 12-1500mm. Hard to focus but does a great job "for the price." On a side note: the lens mount is high maintenance and will loosen after a few uses. Make sure your camera body is supported somehow. Take the lens off when not in use.
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.
36986
I have most of the primes along with many of the zooms. This lens is the lens I use the most. With the $1,000 budget I would just get this lens for sure. Those primes are great but this would be the best if you have that limitation. Then later add a prime if you have more budget. Unless you have a very specific purpose for the 12 and 45 prime this is the way to go but if you are asking this question I would assume the specific primes are not necessary in comparison to the versatility you will get with the 12-40.
462295
It is no a zoom lens. Might be an error on the listing. It is a 30mm prime lens with largest aperture of 1.4. FANTASTIC LENS
289968
The zoom lens does have the manual focus. The small lens' do not. It is a good set
477811
This lens is very sharp - one of the best 43 lens you can purchase. Useful for portrait if you have room to backup. Remember it is equivalent to 120 mm in 35 mm. It can be useful for nature photography as a medium telephoto. Not typically useful for landscspe. The 12 to 40mm pro f2.8 lens meets your overall needs best. At 40mm it acts close to a macro. Unless you are working at high magnification you don't need the 60mm macro which I own and love. But the 12 to 40mm pro f2.8 zoom which I also own better meets your mentioned needs. BUY from Amazon used..like new. I did and got lens in box with warranty card. This lens is very sharp - one of the best 43 lens you can purchase. Useful for portrait if you have room to backup. Remember it is equivalent to 120 mm in 35 mm. It can be useful for nature photography as a medium telephoto. Not typically useful for landscspe. The 12 to 40mm pro f2.8 lens meets your overall needs best. At 40mm it acts close to a macro. Unless you are working at high magnification you don't need the 60mm macro which I own and love. But the 12 to 40mm pro f2.8 zoom which I also own better meets your mentioned needs. BUY from Amazon used..like new. I did and got lens in box... » Read More This lens is very sharp - one of the best 43 lens you can purchase. Useful for portrait if you have room to backup. Remember it is equivalent to 120 mm in 35 mm. It can be useful for nature photography as a medium telephoto. Not typically useful for landscspe. The 12 to 40mm pro f2.8 lens meets your overall needs best. At 40mm it acts close to a macro. Unless you are working at high magnification you don't need the 60mm macro which I own and love. But the 12 to 40mm pro f2.8 zoom which I also own better meets your mentioned needs. BUY from Amazon used..like new. I did and got lens in box with warranty card. « Show Less
549378
Yes, just did mine last night. The focus was off 12mm !!! The lens was working fine on my old 350d, totally shocked.
1875333
This is strictly for macro. Focusing on anything that isn't at the closest focal point is impossible. It is also recommended that you use a lens with a shorter zoom level. This is basically incompatible with my 250mm. I can only imagine how much worse it is with a 400mm.
1518948
The lense has auto as well as manual Focus. It has only manual zoom with very limited range as the specification says.
597333
Agreed with Tech Guy. 24mm on a crop (effectively 40mm) is just not wide enough for a general walk-around lens.That said, I do wish that Canon would have made the 15-85 a constant aperture lens like the 24-105 f/4L.
345123
I had trouble getting a clear focus at the 12+ power range even though I had it on a tripod. I was watching a golf tournament about 250 yards away. I would say no.
1548023
Check out photography-on-the-net forum - some discussion there. I have used the 10x zoom to check focus, but with the incredible depth of field for this lens, it is seldom an issue.
2010589
If you are using the 12-40 lens you have to slide the ring on the front of the lens to achieve Auto Focus. It is easy to bump it and make it manual focus only.
1211479
Yes. The 45mm is mostly a portrait lens. The 12-40 can do portraits but many other things as well, such as, for example, landscapes. The advantage of the 45mm prime is that it's more than one stop faster, which helps with the shutter in low light and gives you slightly less DOF if you need to isolate your subject. The 12-40mm is one of those lenses that will probably live on the camera whereas the 45mm will come out for special occasions.