Sigma 18-200mm f/3.5-6.3 DC 技術規格

Sigma 18-200mm f/3.5-6.3 DC 技術規格

可用的接環	Canon EF, Nikon F, Pentax K, Sony / Minolta A, Sigma
應用	人像, 風景, 野外, 建築物
類目	標準變焦, 遠攝變焦
倍增器	1.5×
穩定器	否
焦距	18 - 200 mm (11.1× 變焦)
鏡片組	13 群組含有15 元素
視角	35毫米: 不適用 數碼: 76.5-8.1°
葉片數目	7
最大光圈	廣角: f/3.5 遠攝: f/6.3
最小光圈	廣角: f/22 遠攝: 不適用
最短焦距	45 cm
放大	0.23×
濾鏡大小	62 mm
大小	∅ 70 × 78.1 mm
重量	405 g
記錄
自動對焦速度	0.8 項 (由近攝到無限遠)
自動對焦聲音
內置對焦	是
內置變焦	不適用
固定前鏡頭	是
接駁類型	鐵
天氣密封	不適用
插入濾鏡	否
超聲波自動對焦	否
APS-C大小的圈	是
低散光度鏡頭元素	是
硬機殼	不適用
軟機殼	不適用
遮光罩	LH680-01 可印刷的遮光罩
三腳架接合器	不適用

Sigma 18-200mm f/3.5-6.3 DC 評語

Other reviews

• Sigma 18-200mm f/3.5-6.3 DC 評語 在www.cameralabs.com (英文)
• Sigma 18-200mm f/3.5-6.3 DC 評語 在www.ephotozine.com (英文)
• Sigma 18-200mm f/3.5-6.3 DC 評語 在dc.watch.impress.co.jp (日文)

Sigma 18-200mm f/3.5-6.3 DC 用者評語

亞瑪遜內最有用的用家評語

Great Lens for the Price!

25 June 2005

I disagree with the previous poster. I think this lens is pretty great.

The quality is exceptional for a lens of this price and range.
There seems to be a controversy regarding how focal lengths of lenses are measured; from what I've read, the lens does go to 200mm if measured at infinity.

In the real world, the lens takes fine pics as long as you have enough light. The size and weight is perfect for a walk-around lens. My Rebel XT with this lens (and the Hakuba hand grip) is a perfect fit, and feels great to carry around and shoot. To get better optical quality at this range, you would need to get a few lenses that each cost a lot more. There is nothing quite like this, except for Tamaron's 18-200, which I hear doesn't compare favorably to the Sigma.

It seems that Sigma has quality control issues, so I would buy
the lens from a local dealer that has a return policy. Test the lens, and if you don't think it's up to par, return it for another.

THE 'one and only' travelling lens.

25 September 2005

3 stars because of:
1) soft corners at 18mm (f3.5)
2) vignetting at 18mm (f3.5)
3) lens creep (self extension of lens barrel while walking) if not retracted/lock at 18mm

This lens has the most useful range one can possibly have. It has become my only lens for short travelling trip when I don't want hassel of changing lens. I took only this lens with my Canon XT to Amsterdam (5days) without missing my other lenses at all. Here are some photos taken with this lens in my website:
http://www.theteh.com/html/london_street_.html
http://www.theteh.com/html/croatia.html
http://www.theteh.com/html/index1.html

For this price range (other than the Tamron 18-200) there is no other lenses that can compete!

My choice for traveling

30 June 2006

I got this lens a day before taking off for an eight day trip, and shot over 1800 photos with it. Though not the fastest lens out there, it did everything I wanted it to, both in the wide angle and the telephoto. I think I put it through a pretty thorough test over that week, and have these comments:
1. If I can only take one lens, this would be it.
2. I missed not having a macro feature, but I got close enough with the telephoto to make up for it in some cases.
3. The auto focus works fine in normal and bright lighting, but in dim lighting (like in a museum) it became confused and I used the manual focus option instead.
4. This is my third Sigma lens, and I haven't had any quality control problems with any of them.
5. I have no experience with high end Canon lenses for my Canon DSLR so I can't make a comparison, but I'm fully satisfied with the optics of this lens.

Excellent value and versatility.

Love the zoom range! And, the photos are sharp!

14 March 2007

This lens is not perfect, but for $350 dollars it is a great bargain!
I love my L lenses but I get frustrated having to switch lens all the time.

With this lens, I only have to carry my camera. Not the heavy camera bag. I love being able to use wide angle and then immediately switch to 200mm (300mm on the Rebel XT) within a second! The lens is light and is a pleasure to carry around all day.

It has a hard time focusing in low light so it is best to use outside when you have a decent amount of light.
I don't like that you cannot override automatic focus. That is one feature I really enjoy on my L lens. If the camera isn't focusing correctly you have to switch to manual before you can manually focus.
I am very surprised on how sharp the photos are. I wasn't expecting anything great in such a low priced lens. I am pleasantly surprised. I may be carrying around this lens a lot more than my 70-200 L and 17-40 L. I have missed many good shots due to the time it takes to change lenses. Also, every time you change a lens you take a chance of adding more specs (dust) to your photos.

It is kind of slow at the long end of the zoom range. (6.3 at 200mm) But, I don't mind it when there is a decent amount of light available.
It is an excellent walk around lens. It is so nice not to be carrying around a bag full of lens all day. My shoulder is thanking me already. Since it is so light, my neck doesn't hurt at the end of the day.
If I need the utmost quality, I will of course use my L lens. But, in the mean time this lens will suffice. I am having a lot of fun with it. I will post some shots soon.
I was kind of surprised that there are only 7 sample shots available here on Amazon. I promise I will add more so people can have a better representation of what this lens can do.

Surprisingly good!

2 October 2006

I just did a side by side comparison of landscape images between this lens and a canon 24-105L with a Digital Rebel XT. To my surprise there isn't much difference in image quality when you match the aperture and focal lengths. The Canon L series lens is faster at all focal lengths and has image stabilization, is sealed and comes with a lens hood, but costs about three times as much. The Sigma lens is slower to focus and noisier, but weighs quite a bit less and has almost twice the maximum focal length and is wider as well. So, if you are using a cropped image camera and have plenty of light, this lens ought to give good performance. If I had to choose between the two, I'd definitely take the Sigma for walking around or daylight landscape.

A good piece overall....

22 October 2005

I purchased a Nikon D70S in August and decided on the Sigma 18-200mm lens instead of the 18-35mm Nikkor kit lens. It really boils down to how one uses this lens as to whether you like it or not. With the 1.5 conversion factor of the D70S, this lens operates as a 27-300mm. I do an ocassional wedding and senior photos throughout the year but I shoot more landscape/nature photography than anything. Unless a person requires a super fast lens, this piece does a very good job overall for the price. Since the majority of my work is off a tripod, the 3.5 max aperture has not been a problem even in very low light situations. Since it's the only Nikon based lens I own, its like having several lenses in one and I never have to worry about dust getting on the sensor during lens changes.

The 27mm is not as wide as I would have liked, but I have had no problems in making due with it especially doing group shots at weddings and has been quite sufficient for most landscapes.

The autofocus is quite fast when needed and it does quite well for my use as a portrait lens. Its 300mm capability really lets you bring in distant objects.

Color accuracy is quite good on both people and landscapes, and works acceptable with neutral density and circular polarizing filters.

My biggest complaint with this lens however, is a bit too much barrel distortion when shooting linear subjects and lens flare when shooting into the sun at sunrise or sunset. The flare problem may be as much the fault of the digital sensor as it is the lens, but I have been told by more than one pro that it's more the lens than the sensor. Therefore, that's why I gave it only 4 stars instead of 5. I have used Sigma lenses on my film cameras for many years and not had this kind of flare problem. However, this lens is built especially for the smaller digital sensors, which may result in magnifying this problem. Both of these faults can be corrected with imaging software most of the time. It just takes time to have to mess with it.

Keep in mind, this is a general purpose lens, and will do a more than acceptable job for all but the most discriminating work. It is light and compact and has a quality about it which looks good on the camera. Overall I have enjoyed the lens, and can recommend it as a good piece overall for the money.

Great all around lense

28 May 2007

I bought this lense a year ago to go with my Nikon D50. I have been very happy with this lense. I researched quite a bit before I purchased this lense and had read many user reviews both good and bad. The negative reviews were mainly from Canon users related to an autofocus problem. I have not had any focus issues at all on my D50. Focus is fast and accurate providing incredibly sharp photos. I have my D50 set to focus on the center of the frame which is the way I typically use a camera.

There is some audible auto focus noise since the Nikon version of this lense does not have an internal focus motor. The lense relies on the auto focus screw driven by an internal motor in the D50 body (or any Nikon DSLR body except the D40 which doesn't have one). The noise heard is not the lense but the stepper motor in the D50 body. The identical noise is heard when I use my Nikon 50mm f1.8 lense which also relies on the autofocus screw/motor in the D50 body. Other Nikon AFS lenses are super quiet since Nikon includes a very quiet Silent Wave focus motor inside the lense which disables the DSLR body stepper motor.

[...]

[...]

You will notice the barrel distortion at the 18mm setting with photos of linear objects (eg. buildings or anything with straight lines). Keep in mind that even the Nikon 18-200mm lense at more than twice the price also exhibits the same percentage of barrel distortion as the Sigma. When covering this wide of a zoom range a compromise is made by the design engineers.

Another complaint I've read about, and is also an issue with the Nikon and Tamron, is that some people claim the 200mm zoom setting isn't true 200mm. Well this is correct when you're focusing on an object that the camera has not focused to infinity. In other words the closer the subject the less magnification is achieved. This is normal for any lense covering this zoom range. As an example I performed a test and focused on an object bout 50 feet away at full telephoto and achieved about a 9x magnification over the wide angle setting. When I performed the same test on an object that was a couple of hundred feet away I did achieve the full 11x magnification range. [...]

The bottom line: This is a great lense for the money. Certainly the Nikon 18-200 VR is a better lense but costs more than twice as much [...]. If you're a Nikon DSLR owner (except the D40 which does not include a focus motor and screw) and if you don't want to spend [...] on the Nikon 18-200mm VR than this is your lense. It is compact and light and has a great quality look and feel. It provides super sharp photos and I'm very happy with it. [...] Also with such a zoom range you'll almost never take this lense off your Nikon which also will minimize dust getting into the camera body.

My only other suggestion is to wait for the Sigma 18-200mm OS version of this lense which is not yet available. It will include an optical stabilization feature not included in the base Sigma 18-200mm [...] and most likely there will be a waiting line once it's released sometime in 2007. Assuming the OS version has equivalent optics the OS feature will be an added bonus making it similar in performance to the VR feature of the Nikon 18-200mm.

Faulty lens?

11 August 2005

Left side of all pictures was soft compared to right side, especially the lower left portion. Exchanged for a replacement.

Great Lense

6 February 2007

I did quite a bit of research before finally settling on this lense and I think I made a great choice. I was previously using my old 35-80 and 100-300 lenses from my film camera, but this lens allows me to have a much wider angle than I was used to and almost the same telephoto all without having to change lenses.

This lense is not as quite as a comperable new nikon lense, but it also much less expensive, and is much more quite than my old nikon lense. I have not noticed any prolems with the colors or image quality. As an average camera user I am extremely happy with my choice.

Excelent!!!

3 April 2007

i have a 18-55 and a 80-200 2.8 nikon lens and this one combines them both, great lens, fast auto-focus, the lock button great. nice colors and great specs.

Garbage - wait for Pentax

18 December 2007

This is the worst camera lens I've ever had the misfortune to use.

I wanted something I could travel with to replace my 18-55mm kit lens (I have a K100D) plus the 50-200mm telephoto zoom. These are great lenses but I was trying to hold down the bulk and weight, so I gave Sigma a try.

Big mistake. This thing is TERRIBLE. Horrible chromatic distortion -- I frequently got BOTH purple and green fringing effects on opposite sides. Depending on the zoom and the angle I was shooting at, I got laughably distorted barrel and pincushioning -- sometimes in THE SAME SHOT. Literally, the extreme barrel distortion would flare back out at the corners. And it won't focus properly -- the center will be fairly crisp but the edges will be completely gone -- not the far edges either, but a mere third of the way across the frame. It vignettes really badly.

This is a CRAPPY, CRAPPY lens. I've seen better on dollar trashcams in the thrift store.

An Excellent Travel Solution

28 August 2006

Admit it, many of you are looking for that one lens solution for the times when you just can't bring all your gear. For me, this is that solution. I have used this lens extensively on my KM5D and find it to be quite usable. Yes, it is a megazoom. Yes, it has problems, but these are compensated for the sheer convenience. I find the lens to be rather sharp and colors to be quite nice as well. The price is certainly reasonable and the build quality is quite good (i.e. metal mount). I highly reccomed this lens, but be aware that it is not "G" (or "L" for you Canon folks) glass. Once you get by that, you can appreciate the lens for what it is. I highly reccomend the PTlens plugin for photoshop to use with this lens to correct distortions, vignetting, etc. Highly reccomended!

Here's a nice shot I took with this lens while vacationing in Northern California.

http://images14.fotki.com/v21/photos/8/896360/3774403/sfb3sm-vi.jpg

Great Lens

3 October 2005

Just got this amazing lens last week and already took over 500 shots. Clarity is excellent and the tones superb with an SD10 Body. The size is also perfect, rather small for such a godo range Zoom. Focusing is fast and easy and locks on the subjet almost instantly. Certainly one of the best for SD10. An excellent choice for travelers.

Sigma 18-200mm f/3.5-6.3 DC 圖例

Canon EOS-400D + 18-200mm f/3.5-6.3 DC

Sigma 18-200mm f/3.5-6.3 DC 配件

62 mm 濾鏡

62 mm 極化濾鏡

• Digital Concepts 62mm Video Filter Kit with UV Protection, Polarizer, & Fluorescent Daylight Filters and Filter Carrying Case 7.62 USD
• Quantaray - 62mm Circular Polarizer Filter 34.99 USD
• Digital Concepts 62mm Circular Polarizing Filter 10.68 USD
• HOYA 62mm Polarizing Filter 0.00
• Adorama 62mm Linear Polarizer Glass Filter 14.95 USD
• Quantaray - 62mm Polarizer Filter
• Tiffen 62mm Circular Polarizer 0.00
• Zeikos 62mm 3-Piece (UV Haze / CPL Circular Polarizing / FLD Fluorescent Correction) Digital Multi-Coated Glass Filter Kit with Case 18.95 USD
• Tiffen 62mm 80A Filter 18.99 USD
• Sony HDR-FX7, HVR-V1U - 62mm High Resolution 3-piece Filter Set (UV, Fluorescent, Polarizer) - (not sony Brand) 19.57 USD

62 mm 紫外線濾鏡

• VISION OPTICS ULTRA THIN MULTI COATED 62MM UV FILTER 2.55 USD
• Bower 62mm Uv Filter 2.55 USD
• SUNPAK CF-7035 UV Ultra-Violet Filter 62mm 5.43 USD
• Tiffen 62mm UV Protection Filter 5.95 USD
• 62mm Multi Coated UV Filter 62 mm UV Lens Protector 6.95 USD
• Zeikos Precision Photographic 62mm Professional Glass UV Filter 6.99 USD
• Digital Concepts 62mm Video Filter Kit with UV Protection, Polarizer, & Fluorescent Daylight Filters and Filter Carrying Case 7.62 USD
• HOYA 62mm UV Haze Protection Filter 8.55 USD
• Opteka 62mm High Definition² UV (0) Ultra Violet Haze Multi-Coated Glass Filter 7.95 USD
• TIFFEN 62WIDUVP 62MM Wide Angle UV Protector Glass Filter 0.00

62 mm 日光濾鏡

• HOYA 62mm Skylight 1B Warming Filter 8.99 USD
• Tamron 62mm Skylight 1A Lens Filter 9.99 USD
• Sunpak 62mm Skylight Filter 14.95 USD
• Quantaray - 62mm 1A Skylight Filter 15.95 USD
• Tiffen 62mm Center Spot Filter 16.99 USD
• 62mm Sky Filter 16.99 USD
• Hoya 62mm Skylight Multi Coated Glass Filter 0.00
• Quantaray - 62mm 1A Skylight Multi-Coated Filter 22.99 USD
• Promaster 62mm Skylight 1a Filter 27.99 USD
• B + W 62mm Skylight 1A Coated Glass Filter (KR1.5) 29.95 USD

62 mm 鏡頭蓋

• The Camera Hunter 62mm Plastic Snap-on Lens Cap 3.95 USD
• Center pinch 62mm snap-on lens cap with keeper 3.95 USD
• Adorama 62mm Plastic Snap-On Lens Cap 4.95 USD
• Orion Replacement Lens Cap, 62mm 4.95 USD
• Mennon Pro Center Pinch 62mm Snap-On Lens Cap with Leash 4.95 USD
• Tiffen 62mm Metal Screw-In Lens Cap 4.99 USD
• Bower 62mm Plastic Lens Cap 4.99 USD
• OP/Tech 07621 62MM FILTER CAP 5.64 USD
• Plastic Snap-In 62mm Lens Cap 5.89 USD
• Olympus CAP LENS 62mm LC-62B 5.95 USD