Hello. I know that the focal length does go x2... But the aperture is only afected in dept of field terms, not in the amount of light ??
1789851
Light is light. It is still a F1.2 lens, that just happens to have a greater depth of field than a comparable full frame camera. This is the best m43 lens made.
1789852
Max aperture is f1.2 and will always gather light accordingly, it is not impacted by any 'equivalency' or 'x2'.
1789853
Your aperture is a standard no matter what camera you use. 2.8 is 2.8, regardless of focal length. Technically, your depth of field doesn't change either actually. The 2X crop factor means you need to stand twice as far away to get the same Field of view compared to a 35mm equivalent (full frame), which is why your depth of field will be less. Another way of putting it is that you'll get the depth of field of a 25mm lens with a 50mm equivalent.Also, know that if you're looking for a shallow depth of field with great bokeh, this is the only lens you should be considering. It's spectacular. Your aperture is a standard no matter what camera you use. 2.8 is 2.8, regardless of focal length. Technically, your depth of field doesn't change either actually. The 2X crop factor means you need to stand twice as far away to get the same Field of view compared to a 35mm equivalent (full frame), which is why your depth of field will be less. Another way of putting it is that you'll get the depth of field of a 25mm lens with a 50mm equivalent.Also, know that if you're looking for a shallow depth of field with great bokeh, this is the only lens you should be considering. It's... » Read More Your aperture is a standard no matter what camera you use. 2.8 is 2.8, regardless of focal length. Technically, your depth of field doesn't change either actually. The 2X crop factor means you need to stand twice as far away to get the same Field of view compared to a 35mm equivalent (full frame), which is why your depth of field will be less. Another way of putting it is that you'll get the depth of field of a 25mm lens with a 50mm equivalent.Also, know that if you're looking for a shallow depth of field with great bokeh, this is the only lens you should be considering. It's spectacular. « Show Less
1789854
At maximum aperture you will have the shallowest depth of field and the maximum light gathering. Both are affected by changing the aperture.
1789855
It is an 85 mm lens in 35 format. For light gathering it is a true 1.2 but for depth of field it is like a 2.4.
1789856
Photographing a subject with a m4/3 camera and this lens at f/1.2 next to a 35mm DSLR and 85mm lens at f/1.2 will yield the same exposure at equivalent ISO. The only thing affected is the DOF, which performs as a 42.5mm lens would at f/1.2 on a 35mm camera.
1789857
yes, you get light gathering of 1.2 lens, but depth of field of a 2.8 lens @ f/1.2, so you get an extra f stop of speed without loosing depth of field over a full frame camera
1789858
The depth of field is of a 42.5mm f/1.2 lens and there are calculators to get the depth of field on a micro four thirds sensor at different working distances. The amount of light reaching the sensor is almost the same as most other f/1.2 lenses that are on the market with only small variation dependent on the T stop of the lens which is approximately 1.6. You can compare that to the T stop of let's say the Canon EF 85mm F/1.2 which is T stop 1.4. The sensor is actually not affecting the light transmission but rather the lens efficiency determines the efficiency in transmitting light.
480681
It might help to know why you are using the lens at f/16 or smaller. While it should work, these apertures are not ideal for getting the best image quality.
1370586
Yes, it is. The focal length and aperture value cannot be mathematically separated, and must both be multiplied by 1.53.
206407
Thank you for contacting us. As per the manufacturer, the focal length is 24-105mm. Please feel free to call us at 1-800-991-3350 if you have any further questions!
534708
F-stop/aperture does not represent clarity, but no, it does not lose a stop. I haven't had any cropped images, nor have I even noticed any vignetting as a result of using this. The widest lens I've used with this is a 28mm
1050986
The lens itself is 4.5mm at wide and the listed 35mm equivelent field of view is 25mm.Sorry, N. Hoang; I didn't see that you had beat me to it.
475379
It is a dual aperture system. Not sure as to actual size but works well for both close and long range. It is very similar to the military aperture.
111872
Yes, as are all lenses with a fixed focal length. (It doesn't zoom.) I love mine and use it all the time because of the very short focal distance.
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.
52208
2.8 will provide a wider view, reference the link for a relative example. http://learnphotographywithtomgrill.blogspot.com/2011/05/lenses-introduction-to-focal-lengths.html
1297657
not indexed at all, but can stop between the 2 ends (fully open & smallest aperture) --- have often used the middle position for the range of f5.6~11 and got sharp results.
1690526
Hi. The lens is a 30mm prime, wich means 30mm is its only focal length, there's no zooming.
1019183
You can set the aperture on-camera. Sorry no one answered your question. I didn't see it till just now.
990229
The aperture numbers wont align, this lens has a fixed aperture of F/8 the arrows moving right/left are to allow greater clarity (by opening the lens) for focusing
2171693
2.8 is the maximum aperture at minimum zoom. I no longer own thing lens. But I believe it goes to f22. It is either 16 or 22.
564302
It is not a full frame lens. It will still function on a non-DX body, it would just crop the image.
585120
This is a fixed focal length. Does not zoom. One of my favorites. Amazing sharpness and low light performance.