a hands on review
The two fast aperture f/1.4 and f/1.8 85mm G lenses are usually rated as the best lenses made by Nikon. I was curious to know if one was any better than the other in terms of image quality. After all, the f/1.8 G version at $496 costs less than one third the price of the f/1.4 ($1650). Is 2/3 of a stop worth that? Is the build quality that much different? What about the resolution?
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I prefer to use this lens for informal portraits where I want the face to be mostly sharp and the background not to interfere by being completely out of focus. My favorite lenses for accomplishing that effect are a fast 85mm or either of the defocus Nikkors (105 or 135mm).
Side by side, the two lenses do not appear that different in size. It isn't until you compare the front lens elements that you really notice the difference. |
Both lenses have auto and manual focus modes with manual override. The biggest difference between the two is in the number of diaphragm blades. The f/1.4 has 9 and presents a round opening, while the f/1.8 has 7 and is not quite as round.
These lenses shine when used for situational portraiture by creating a very soft, out of focus flattering background while keeping the face ultra sharp. |
In my sharpness tests I found these lenses to be equal at all apertures. They are very sharp with only a slight softening in the corners when used wide open. Their fast aperture aids in speedy focusing. When I do serious beauty portraiture I rely on the 105mm micro Nikkor lens, but for a more cdewinaal, natural look, often shot in available light, I prefer a fast aperture 85mm lens. If you are like me and prefer to use them stopped down a bit to around f/2.2 then the f/1.8 model should work just fine.
Conclusion:
Both of these lenses are very highly rated for sharpness. After putting both of them through their paces for awhile, I can see why. For all practical purposes they are pretty much neck and neck. If you need the extra 2/3 of an f/stop and the extra bulk and weight -- not to mention cost -- is not a deal breaker, then get the f/1.4. Otherwise, you can't go wrong with the smaller, cheaper, lighter f/1.8 -- plus it's much easier to tuck into your gadget bag, and I'm sure you can find some other gear to buy with the $1000 you'll save.
After putting the f/1.8 through its paces in our studio recently, all of us who tried it really fell in love with it as a first choice. It focuses quickly and very accurately, has minimal distortion, and its size has a comfortable feel. The two photos below, taken under studio circumstances that we know always cause us problems with focus and color fringing, convinced us that the f/1.8 model is an exceptional piece of glass, definitely the best I have ever seen in its class. I know I will be reaching for it as my first lens choice in the future.
After putting the f/1.8 through its paces in our studio recently, all of us who tried it really fell in love with it as a first choice. It focuses quickly and very accurately, has minimal distortion, and its size has a comfortable feel. The two photos below, taken under studio circumstances that we know always cause us problems with focus and color fringing, convinced us that the f/1.8 model is an exceptional piece of glass, definitely the best I have ever seen in its class. I know I will be reaching for it as my first lens choice in the future.