Posts tonen met het label review. Alle posts tonen
Posts tonen met het label review. Alle posts tonen

zaterdag 6 juli 2013

review of the Nikkor 35-105mm f/3.5-4.5

The 35-105mm was Nikon’s first variable aperture lens, but compared to the modern lenses it does not lose a lot of light. Rather than closing down to f/5.6 at the maximum zoom range, it closes down to f/4.5. Besides the useful focal range (especially on film / full frame) it is also capable of a reproduction ration of 1:4. So this seems like an interesting lens. And to be honest that’s the reason I bought it, because I was curious and not because I needed it.

Of course this is an older zoom lens, which means that the quality is not comparable to current Nikkor zoom lenses. However the image quality is surprising, the lens is far more usable than I anticipated. If you punish this lens it does show its shortcomings, but if you are aware of them you can make pretty good use of this lens. So one of the things you should not expect this lens is to produce good image quality when you are focused on infinity and you use a wide open aperture. Then the image becomes muddy and it reminds a bit of a smart phone image. However, if you close down one stop and try not to be at the extremes of the focal length you can get a very acceptable image. On a scale of 1 to 10 I would give it a 6.5 or 7 while the 50mm would get a 10. So if I want an extremely sharp image for a large print I would not use this lens. And I will probably never take it when I go out to make landscape photographs.



However the lens is quite sharp when you focus a bit closer. The normal focus ring allows you to focus up to 1.4 meters, but there is also a macro ring. Depending on your focal range you can get a magnification of 1:4 (35mm) or 1:5.5 (105mm). And the images I got out of that mode are very good. Again, on a scale of 1 to 10 I would give it an 8. And since we discuss close-up photography we might as well discuss bokeh. The bokeh of the lens is alright, it is not really bad but also nothing outstanding. The aperture blades are not curved so you can see the aperture blades back in the bokeh highlights. Normally I don’t find it distracting but with this lens it can be a bit distracting from time to time depending on the actual aperture you use. But if you have less out of focus highlights, shoot at an aperture which suits the bokeh the bokeh is quite nice. The area which is closest to the focus point can be a bit distracting depending on the background, but generally it looks good.

As you can see, the ground which is only just out of focus is a bit busy. But besides that I like the bokeh in this photograph


This lens flares quite easily. If you can find an appropriate lens hood you should use it to avoid unwanted flare. But the flare of this lens is quite beautiful, it shows that this lens contains out of a lot of lens elements. You can control the flare to a certain extend by zooming a bit in or out. Zooming just a bit can change the look of the flare dramatically and I you have the time it is worthwhile to experiment with the best focal range. Of course this lens has other short comings as well. It has quite some distortion I’ve read on other websites. But until now it hasn’t bothered me that much. I have to admit, I do not shoot architecture, but the distortion isn’t too obvious and I generally do not correct for it. Another issue this lens apparently has is vignetting. After all, it’s an old zoom. But I have not noticed it yet. I’m sure there is some, but it hasn’t bothered me yet even though I don’t like it if you can see imperfections in my photographs which were not intended for the viewer to see. (flare on the other hand can be a nice creative tool)




So I’ve discussed the image quality of this lens, but I don’t think that’s the most important I like about this lens. I have sharper lenses. But the thing about this lens is that it gives reasonable image quality while also being very versatile. You can focus reasonably close and the focus is just nice, it’s the classic Nikkor quality. I like the focal range on DX (but that’s because I don’t like shooting with lenses wider than 28 on DX) especially for a general walk-around lens. It has a 52mm filter thread which is shared with a lot of other Nikkor lenses. And the build quality is just great. The main quality of this lens is the handling. Of course I can get better image quality by shooting with a modern zoom or a prime, but there’s just something about this lens that keeps making me use it. Because what’s image quality worth when your photos suck? I really like my primes, and I think that they help me to see better photos. But from time to time you just want a zoom, and then I pick this lens of the shelf. 


zondag 4 maart 2012

vivitar 200mm f/3.5





Vivitar was a lens re-seller, and the serial numbers are an indicator who actually manufactured the lens. There is some difference in optical quality and exterior per manufacturer. You can check who made your lens on this list
The serial number on my lens starts with 28 which means it’s made by Komine.

I am not sure if I am really positive about this lens. In test shots it shows what it can do, but in the field (which is way more important) it is a lens which takes getting used to before you get good results. It is pretty difficult to get the right focus, and if you missed just a bit you will notice it. I guess I will be more positive about it in the future, but for now I really need to pay attention to my focus, more than on any other lens (except for macro photos)

Handling the lens
The lens feels solid, it is quite heavy but not front heavy. You can stabilize it quite easily and does not feel unbalanced on my D60. The focus ring is quite smooth, not as smooth as my Nikkor lenses, this one uses oil. This is a major disadvantage during cold days because the oil becomes stiff and the lens is harder to focus. However most of the off-brand lenses use oil in their focus mechanisms so I won’t nag about it anymore. The thing is, focus is really critical with this lens. When I first got it and tested it I was a bit carless about my focussing. At first I thought I bought a dog because images were soft. This lens does not tolerate focus errors at all, and the right focus is a bit hard to achieve. It takes a smaller twist on the focus ring than I used to to defocus the lens. This is could be because the focus ring is not precise enough, but I think it’s mostly because it is a longer lens with a faster aperture than I normally use. The lens has a built in hood. It is relatively short and I am not sure how effective it really is. But it probably is better than nothing and it seems like a nice feature. (especially during the rain to keep your front element dry)



Results
Wide open this lens is extremely prone to CA. In high contrast situations you’re able to see it without looking closely. During processing you will find CA everywhere. However it falls within the limits of what’s correctable in my post processing program ( I use Capture NX 2, but I’m sure any other program will be able to cope with it as well)
The sharpness wide open is a small OK. It does not shine wide open. At f/3.5 details start to blur, perhaps also caused by the CA.

without correction

With correction


At f/5.6 the quality starts to increase rapidly. Sharpness increases to great, but CA is still visible, but a lot less. You won’t be able to see it at normal magnifications, only when you zoom in for small precise adjustments (hey not pixel peeping right?) I would be confident to use this lens for a large print for a paid job at f/5.6.

F/3.5

F/5.6


Bokeh is all right, with busy backgrounds it can be distracting, especially branches. The only solution is to open up your lens, or come closer. But a lot of lenses won’t be able to handle it very well. If the background is a bit smoother the bokeh will be all right.



Conclusions
I bought this lens mostly because I wanted something faster than my 70-210 f/4-5.6 for my walk around wildlife photographs. And this lens does the job all right, it is a good lens but nothing special. It is not as sharp wide open as my 70-210, but this one has a faster aperture. I end up using this lens as a regular 200mm f/5.6 lens with some emergency extra F-stops. The reason I do so is because focus is really critical and I just need the DoF to get sharp images. Especially for wild life because the focus ring has more friction than my Nikkor lenses (but as much friction as my other 3rd party lenses) which makes it a bit less precise. And because the real sharpness of the lens is just better at f/5.6 So in conclusion I do recommend this lens, but don’t pay too much for it. The lens is OK, but nothing more. 

Note:
If you want full resolution images, just sent me an email, and I will send them to you. I just don't like to put up full resolution images


donderdag 3 november 2011

Vivitar Series 1 28-90mm f/2.8-3.5 review




WARNING: Vivitars, and especially this lens, are notorious for problems with the aperture. This lens is notorious for oil leaking on the blades.

My lens is one of those lenses with oil leaking on the blades, this causes the blades to be too slow to close down. Fortunately because of something in the design the lens doesn’t automatically open up all the way when you put it on your camera with the aperture closed. It opens up to f/4, giving me two apertures to work with. (I think this is caused by the higher friction, so the springs which should open it up all the way are too weak).

Before you plan to buy this lens, check the serial number. There are multiple versions around, made by different manufacturers, although I have heard that every version of this lens is good. My lens is made by Komine.

Handling the lens:
The lens is pretty heavy, yet it does not feel unbalanced with my d60, and of course this weight should be expected for a large aperture zoom lens. The lens has a different design than most lenses: you have to refocus every time you zoom. This takes some time to get used to, but in the end you’ll keep it in mind.
The design allows very close focus at the widest end, but only a minimal focus distance of one meter at 90mm. To be honest I really like this, it gives a nice wide angle look to your near-macro shots, something you don’t see very often.



Handling the lens without metering:
If you use this lens on a consumer grade Nikon camera you’ll probably lose metering.  but if you get the hang of guessing the exposure this lens will not pose any problems. Yes this lens has a variable aperture, but it’s only half a stop, so if you forget to adjust you can easily fix it in post. And because you have to refocus anyway after you’ve zoomed this lens in or out you’ll probably remember adjusting the exposure just a bit.

Results:
The lens shows quite some chromatic aberration wide open, especially wide open. Yet your post production program is very well able to remove this. When you close it down, there still is some CA but you have to look for it. However I like to get rid of it anyway since it takes almost no effort.

Sharpness is almost OK wide open. You get a usable image, but if you look your photo at 100% you see that is soft compared to a prime shot wide open. I’m not sure if this is a fair comparison, a prime has an easier construction, but why would you settle for less if you also have a prime? However if you close it down one stop it sharpens up to very usable levels, but don’t expect extreme sharpness.

Bokeh is ok, nothing really special, but also not very distracting.



There are some downsides though, this lens is pretty prone to flare. Sometimes the flare is all over your photograph, reducing the contrast. You can use this to your advantage, but sometimes it just happens too often and easy.
I have heard quite some complaints about vignetting, but because I use this lens on a DX sensor I have not yet noticed it. When I shoot it against a white wall I’ll probably see it, but until now I have not seen it in “real” photographs.
(the highlights in the background is flare caused by a flash positioned at 60 degrees from camera left)


Conclusion:
Buy this lens if you want an easy lens with a lot of possibilities, and that’s the reason I like it. You get a useful range, you can focus really close and you have a fast lens. This sounds too good to be true, and of course it is. The results are ok, but not amazing. I think that’s the reason I don’t use it very often, because I also have a 28mm and 50mm which do have amazing image quality and are my preferred focal lengths.  

zaterdag 1 januari 2011

review nikkor 50mm f/2

Before my first review of a lens, I will explain what I try to do here. I'm not interested in what is the sharpest lens, if it is sharp enough it's sharp enough. I only use it in real situations and will not compare the sharpness at different apertures using a tripod to shoot the same subject over and over again. I just explain my experiences with a couple of lenses.

The 50mm, a lens every photographer should have in their bag. Well at least in the film days, (and maybe the future full frame days) because with the DX format a 50 will become a 75mm.


This length is a bit awkward if you are not used to it. It is a slight telelens, but it doesn't come really close as well.  So you probably won't be using this lens indoors, but i find it a very useful focal length for portraits. You can get fairly close to the model, get some interaction. It also suits my style of street photography, I'm not really a street photographer but i always felt that the action was like 4 meters in front of me and a 35mm (50 on DX) just didn't come close enough. But I also use it for everyday shooting, to shoot my brother's basketball games, concerts.

But now the lens, I own the nikkor-h 50mm f/2 pre ai lens. I bought it for 15 euro's from a guy who thought it was broken because it didn't focus on his camera. I saw no use in telling him that it would have been weird if it did, so I just told him I was trying a bit of DIY repair for a schoolproject. It looks like it's been through a war, but the glass is still good and has no scratches. I don't show a photo of the lens because it does not really matter what the lens looks like, there are different versions: 2 pre-ai's, ai and ai-s but they are all the same. As long as it is a manual focus nikkor 50 we're talking about the same lens.

The lens has 6 aperture blades which aren't round, if you close it down you will get a hexagon shaped bokeh.


Personally it does not really bother me, nowadays the aperture will be round at every aperture, creating a smoother bokeh. But it does not really distract, because if you have round bokeh or hexagon bokeh, the highlights will be shown as little almost round shapes. It only distracts because we aren't used to other shapes than roundish bokeh.

The lens has an aperture range from f/2 to f/16, at f/2 it is already pretty sharp and it peaks from f/5.6 to f/11. At these apertures this lens is extremely sharp, every imperfection on a model's skin would definitely show up. That's why I always use it wide open for portraits, because than it all comes together. When I take a head shot, only the eyes will be really sharp, hiding the imperfections on the model's skin, and if i do a full body shot they will not show up because they are too small.

For everyday situations I tend to use it at f/5.6, just because I like the depth of field it gives me, my subject will be sharp while the background will be unsharp. Especially if i shoot landscapes with it, I prefer rising the ISO than having a too short depth of field.
Landscapes? Yes! landscapes, i like longer focal lengths, I feel uncomfortable when i shoot anything wider than a 24mm at DX. I like to focus on details and like a smaller depth of field than the distortion of ultra wide angles. So i shoot landscapes with my 50mm from time to time.


Like this one, I took this photograph in Utrecht. I forgot the exact aperture but I think think it was taken at f/11 to get a maximum depth of field. What really amazed me when i was processing this photograph was how far you could enlarge it, it is impossible to see it from here, but the bridge has it's name written in the middle. I was wondering what the bridge was called and at 200% i could read it!

For sports:
It is a bit hard to find a good solution between getting close enough and getting a large enough depth of field. Because it is very hard to track focus someone who is playing a game. I rather use zone-focussing, but than you will need quite a large depth of field, a depth of field a longer lense only gives you when you close it down. I find the 50mm just at the edge of being convenient, my hit-miss ratio is a bit too high, but when i pull of a shot it looks great. The player is well isolated and you can clearly see the expression in his face.

Conclusion:
Get this lens, it is a cheap one and a good one. Manufacturers have been making 50mm's for ages and know how to make a good one for a small price. It does not really matter if you buy the f/2 or the f/1.8 version, although the f/1.8 is more common I also noticed that the price is like 10 to 20 euro's higher. This is weird because you only can tell the difference between these apertures by looking at the specs. The difference is 1/3th of a stop, I would not spend 10 euro's extra for this, especially since i bought this lens for 15. Just get the cheapest one and enjoy this lens.