這不是測試報告. 最近有幾位朋友不約而同地問我有什麽儍瓜機可介紹, 而我正断断續續的試用着剛買不久的Panasonic Lumix LX7。我買這LX7, 主要為了它的1.4, 24mm鏡頭方便使用於博物館或室內。它的近距離對焦(1cm) 和全景照也是吸引我的地方。當然它的售價也是考量之一。無獨有偶, 這些也是朋友們有興趣的地方, 由於初步印象是正面的, 所以我把拍了的實例放些上來, 供大家参考。對測試報告有興趣的朋友, 請参閱夲篇最後所附的links.
This is not a review. Recently a bunch of friends in the market for a better point-and- shoot asked me for recommendation. Coincidentally, I have been test running my new Panasonic Lumix LX7. I bought this LX7 for its 1.4/24mm lens which is good for use in museums and indoors, its 1 cm minimum focus distance, quick auto-focusing and handheld panorama are also the features I like. Since my first impression of LX7 is positive, so I post this stack of photos here for their reference. For those who interested in review reports, please refer the links at the end of this post.
這個小妾進了門已有三個多月, 本來想作系統式試用並紀錄下來, 只是庸懶好逸, 只試用了些需要的模式, 好些模式還未有試用。此機原價 US$499, 2013年底見減至 US$450, 最近更減至US$399。我原來想買Sony RX100, 取其大感應器, 但價錢較貴。我嫌LX7的感應器只有1/1.7, 又嫌它的鏡頭蓋….. 但2012年10月香港傳來消息說有人在amazon.com 以一千多元港幣購得, 所以我就常去看amazon.com。過了一个多月, 突然在一個晚上在無示警下,售價变成 US$299, 所以就馬上下單。鏡頭蓋是有點討厭, 但照片質素(解像力和色彩還原) 非常好, 可能真的是Leica 鏡的関係。
The original price was US$499, it came down to US$450 by the end of 2012. The price has dropped further to US$399 recently. However, it appears that for some unknown reasons, Amazon.com dropped their price significantly from time to time for a day or less. I had encountered that opportunity one night in early January, the price was US$299. Nothing was mentioned for the price drop. The low price didn’t last long, it was changed back to US$499 at around 10 am the next morning.
試用體驗: Dummy run:
弱光 – 此機一大賣點是其 1.4 的大光圈, 儍瓜機有此大光圈者不多。理論上, 大光圈在弱光有優勢, 不用推高感光度, 粒子較小。下圖是二月大雪暴, 電力中断, 用两支臘燭照明用晚餐。當時是晚上六點多。ISO 1000, 1.4 光圈, 1/8 秒(竟然没手震現象, IS/VR防震顯然不錯), 两支燭光。藍光是雪地反光。
Dim light – LX7 is equipped with a 1.4 lens which is great for dim light. The following photo was a snapshot taken during power outage in a snow storm in February. As shown, there were only two candle lights. The time was 6:30pm, ISO1000, f/1.4, 1/8sec (no blur, the built-in stabilizer is not bad). The blue light outside the window was the reflection of snow.
博物館弱光下表現 – 大光圈在博物館昏暗照明和禁用閃燈的情况下很管用, 這也是我買此机的理由之一, 且看看表現如何。設定: 白平衡=自動, 測光= matrix 平均, 列出焦距為35mm 等值。美術館展品多有玻璃保護, 玻璃有反先, 且令反差減低。LX-7 的好處是方便, 24mm 令我可以把相機貼在玻璃上, 這樣可得無反光的影像, 而且手不会抖動, 可得清晰影像。LX-7 容許用者関掉對焦輔助燈, 十分適合博物館使用。至於反差, 只要用PS 或 Picasa 稍調即有艷麗影像。
Performance in museum – Lighting in museum is usually dim and use of flash is not allowed. I used to bring in my DSLR + 50mm f1.8 lens. However, it is bulky and a fixed focal length lens is not convenient. Take the following 16th century scroll as an example, this scroll is encased in glass which gives reflection of light and minimizes the contrast (see the first one below). I turned off the auto focus assist lamp and held the LX7 against the glass to avoid reflections of light. Pressing against the glass also helped in stabilizing the camera. I was able to take some close up shots at 43-50mm, you can actually see the weaving pattern of silk. As for contrast, a little adjustment in PS or even Picasa would bring out a beautiful image.
LX7 解像力與颜色比較(目測, 不科學的) – 跟 Nikon D800 + Nikkor 50mm 1.8 鏡的比較。 Resolution & Color comparison (by eye, non-scientific) – as compared to Nikon D800 + Nikkor 50mm, f/1.8 lens.
那一次去美術館, 也如常帶了Nikon D800+50mm, 所以就用 D800 和LX7拍了幾張相同的海報, 以作比較。两機的白平衡都是調至自動, 也順便看看色彩的還原。D800 的色彩較明快, 感覺上, LX7 的色彩較接近當時照明下的色調。
The following collages are created to compare similar area of two photos taken with LX7 and Nikon D800. White balance in both cameras were set to AUTO, I think the color shown above is more close to what was seen on the scene, the one taken by Nikon appears to have been “corrected”.
上三圖較白的是Nikon D800 拍的, 而較黃的是LX7拍的。印象中, 現場颜色是两者之間, 但較近LX-7 所拍的色調。根據上三圖, Nikon D800 + 50mm 的解像力和衣紋裡的細節都比 LX-7 好。小友 Larry 看到#2 時, 驚嘆D800 所拍到衣紋的細節, 而我則驚見LX7 表現之佳。D800 固然是較好, 但D800 擁有36.3 MP, 35mm 感應器 (35.9×24.0mm), 而LX7 則只是10 MP, 7.4×5.6mm 的感應器, 而且Nikkor 50mm 鏡也比 LX7 的大很多。Snapshot.com 評两者影像質素是95:50 (即D800是90%較好-用DXOMark 軟件比較,不懂)。 從這裡的比較, 我十分滿意LX7 的表現。不明technical 的朋友(其實我也不大了了), 就作下面這樣的比較吧,Nikon D800 + 50mm f/1.8 : Pansonic LX7 = US$3280 : US$299. 這樣你就應該知道我為什麽驚奇LX7 的表現了。
Note: The image quality, in terms of sharpness and detail, D800+50mm f1.8 is definitely better than LX7. However, I must confess that I was so surprised to see how good the image by LX7, considering the fact that D800 has a 35mm sensor, a huge 50mm lens…. For those who don’t know what is D800+50mm means, think this way, D800+50mm =US$3280 vs. LX7 =US$299. The picture on the left is definitely not 11-times better than the one on the right (although snapshot.com claimed that the quality of D800 is 90% better than LX7, a 95:50 ratio [?] as compared with DXOMark software).
快速對焦: LX7號稱能快速對焦(我把快速對焦定在On), 那天在美術館, 他們在試騐翌周 新展”武士道”展場外的幻燈片秀, 圖片不停在轉換, 我抽出LX7, 拍了幾張, 試試對焦速度。之後稍為增加反差。對焦速度確實挺快, 都很清晰,很不錯。
Quick Auto-focus: Fast moving slide show on wall. I was in Boston MFA a week before the opening of their new exhibition, Samurai. They were testing the slide show on the wall outside the exhibition hall, I pulled out LX7 and took a bunch of pictures (the Quick AF was set to ON), to see how good it was. Again, it was impressive. However, I guess this is not a very good way to test auto-focus. I have to try to do it with moving subject moving to or away the camera.
博物館內另三張。A few more museum photos.
近攝: LX7 號稱最近對焦距離為 1cm。 一月的一天, 大回暖, 在門外修理陽台, 没想到看到此傢伙在旁邊曬太陽。身長只有6-7 mm 吧, 想拿Nikon+micro lens, 怕它跑了, 只好進門取出LX7, 撥到近攝, 拍了這幾張, 不壞。方便, 快捷, 效果也好, 唯一是對焦在虫體不易, 但連拍快, 對焦快, 多拍幾張就成了。非常好用。
Close up: The minimum focus distance for LX7 is claimed to be 1 cm which is one of the reasons I bought it. One Indian summer day in January, I was fixing the porch in the warm, lazy afternoon. Out of the blue, I saw this guy crawling next to me, I rushed in, took out the LX7, turned to macro for the first time, and put the camera in front of its nose and took these few shots. Not bad, not bad at all.
拍攝食物: 以前两架儍瓜機要拍食物都要站起來或擧起來, 怡笑大方。LX7 近攝和弱光下了得, 在場景掣內選取食物模式, 則可近攝食物, 與近攝功能無異, 只是色彩飽和度較高。非常好用。
Food: From time to time, particularly when traveling, we like to record the food we eat. With our old Canon P&S, we had to stand up or raised the camera high, it was awful. The FOOD mode under Scene Mode is similar to that of close up except yielding more saturated colors. FOOD is a very useful feature, see for yourself.
其他功能: LX7 有很多場景模式, 如日落, HDR, 人像, 小孩….這些都是相機幫你思考如何針對各特定場景拍攝條件而增減光度, 色彩飽和度。很多我還没試, 以後試了再補上來。
Other settings: There are a bunch of settings you can choose from SCENE MODE and CREATIVE CONTROL, most of these settings are designed to think for you to compensate in a particulate environment so you can have an appropriate picture match the atmosphere, like Baby, HDR, Portrait, Sunset, Glass Through …. I am not that crazy about these settings except PANORAMA.
透過玻璃拍攝: 我原以為這模式有偏光鏡效果, 去掉反光, 其實不然。只是令颜色較深, 減少反光的效果。Through the glass: It doesn’t eliminate the reflection of light on the glass like a polarizer but to lower the light a bit to compensate for glass reflection.
全景照: 這是我特別喜歡的模式, 手持全景照。没錯, 手持。理論上, 在八秒鐘內, 稳定地持機轉一圈, 可得360全景照一張。拍照方向由左至右, 由右至左, 上而下, 下而上皆可。我試過由90至360都可以, 似乎角度較小, 轉速稍慢而恆定所拍出的照片頗為 清晰(参照下面第三張)。270 -360 度的照片並非十分清晰, 但作為紀錄性, 足矣。
Panorama Shot: This is my favorite. Theoretically you can take a panorama of 360 degree handheld. You heard me right, handheld, no tripod, no panning ball head, no stitching. You are not going to get a crispy sharp panorama like you do with Photoshop, but a reasonably good record of the scene. It is very convenient. Moreover, if you go slowly, steadily to get a 90-100 degree picture, you might get a pretty sharp one (check the third one below).
尾聲, 完結前放上幾張用 Program 模式拍的。 Before I quit, I would like to share a few more taken with Program mode:
近攝 + 復古色 (創意控制内選項) and a close up + sepia (in Creative control)
LX7 試機的連結。 Links to reviews of LX7 :
Added 2013.10.24 補:
HDR模式 High Dynamic Range (HDR) Mode of LX7
LX7 機內設有HDR, 但我通常用DSLR拍而用Photomatix 合成。有幾次因便利而用LX7 拍HDR, 效果令人失望。最主要是顏色明顯偏差, 其次是主題移動就出問題。還有拍HDR只有jpeg file, raw就欠奉, 我寧要raw 自調效果更好。
The LX7 is equipped with a HDR mode, I don’t believe I had tried it when I first bought the camera because I usually use my DSLR and Photomatix to do HDR. However, there were a couple times when I had only the LX7 with me, and the light summoned a HDR, I had no choice but to turn on the LX7, the result was a bit disappointing (may be I did something wrong, I don’t know). As the following two pictures show, there are a few issues: 1. the color is not right; 2. when the object is moving, there is a problem; 3. using the in-camera HDR mode only produce one jpeg file, no raw.
日落模式: 不錯 Sunset Scenery Mode: I like it.
連拍模式 – 自動對焦五張連拍測試。買機時就知道LX7能連拍11張, 但没有試。昨天想拍一不停走動的小螞蟻, 想起這功能。原來可設定2/5/11張連拍, 自動對照與否, 我試用5AF, 效果不錯。我不放上連五張的結果, 但挑了幾張成功的例子放在下面。 Burst Shooting Mode – 5AF Continuous Mechanical Shutter tested. I know LX7 has 2/5/11 burst shooting, however, never have it tested until yesterday. I was trying to take a picture of an ever-moving ant inside a flower, I set to 5 AF, and just press the shutter as needed. I didn’t pay attention to how fast LX7 get the job done, but following the movement of the ant. The following are some successful shots selected from different series. I am really impressed of this function, I shall try to use it in different situations and pay attention to how well the camera can do the job. Stay tuned.
用LX7空中拍地面。From the air, LX7
下面一輯相是在飛機上往地面拍的。一般來說, 我很少在飛行途中拍照, 所以DSLR早就收在包包裡, 只有腰間常有LX7。這次飛往愛蒙頓，途中, 拍了幾張, 色彩嚴重偏差, 猜想是飛機窗玻璃加上高空….等理由, 所有照片都經調較, 限於技術, 顏色不盡理想。
The Following links to a recent post of pictures taken with LX7. Normally I don’t take pictures in the aircraft, so I have all my gears packed except my LX7 which is always in my waist pouch. The colors were not right, I don’t know whether it was the high altitude or…whatever. All pictures shown were adjusted to the limit of my poor PS skill.