请教DIAL 35广的最近焦距

不止是暗角

     手头的dial35由于发条上卷不是很可靠、回卷又要完全在暗室操作，所以用的比较少，最近拍了一卷，发现很多远景比较实，而近景照片打量虚焦。机身最近距离标注的是2.6，（见机身图片）所以我拍近距离照片时将调距环调到最近、也就是2.6m这一端，然后在离物体2.6m时拍照，可是基本都虚了，反倒是近处的景物要实一些。查阅之下发现有些资料说该机器最近焦距是0.8m。
不知有没有老师能帮我解答一下，到底是2.6还是0.8？如果是0.8，那机身标注的2.6又是什么意思呢？

[ 本帖最后由 不止是暗角 于 2008-10-2 02:23 编辑 ]

不止是暗角

      这个样张里，左边桌上的东西越近越实，反而2m外的服务生特别虚。右边的照片是站在桌边照的，距离应该在1m左右。所以感觉0.8m的说法比较靠谱。

不止是暗角

这个样张里，左边图片想把焦放在“蒋宅”上，所以退到2m外来拍，结果虚成这样。右边想把焦放在孩子脸上，结果却在近处老太太脸上。下一卷基本都按0.8m来拍。可费解机身标注的2.6做何解，望老师们指教

helloworld

ft 2.8 ...

指的是英尺。玩这种估焦机，最好再研究一下它的景深表

helloworld

Dial 35
35mm Lens-Shutter Half-frame Camera

• [url=]Outline[/url]
• Specifications
• Ad

        
               

Marketed	Nov 1963
Original Price	13,800 yen, 1,000 yen (case),           300 yen (wrist strap)

        Automaticfilm advance and rewind were driven by a spring motor. The "Dial"designation comes from the ring of CdS photocells looking like atelephone dial. The spring motor winder also served as a camera gripwhich enabled one-handed shooting.

Shutter speed-priority EE was used for exposure control. The camera wasfocused with a needle matching the near, middle, or far icon in theviewfinder. This camera was the first to feature automatic film advanceto frame 1 after film loading.

• Outline
• [url=]Specifications[/url]
• Ad

                                                                                                

Type	35mmLens Shutter zone-focusing half-frame camera with automatic filmadvance (continuous shooting enabled) via spring motor grip
Picture Size	24 x 18 mm
Lens	Canon SE28mm f/2.8 (5 elements in 3 groups)
Shutter	Seiko-sha with behind-the-lens metering. B and 1/30 to 1/250 sec. X-sync flash.
Viewfinder	ReversedGalilean viewfinder with projected frames. 0.42x magnification, 90%coverage. Toward the left within the viewing area are match-needlepictographs for near, medium, and far focusing distances. Viewfinderbottom has exposure meter match needle and correct exposure window. Theleft and right are overexposure and underexposure warning zones.
Focusing	Lens focusing lever for matching zone focusing marks from 0.8 m to 15 m (infinity).
EE	CdS element for shutter speed-priority EE. Metering range from EV 8(f/2.8 & 1/30 sec.) to 17 (f/22 & 1/250 sec.) at ISO 100.Metering limit is EV 21. Film speed range of ISO 8 - 500. The aperturecan also be set manually by pulling out and turning the aperture knob.
Film Loading &           Advance	Afteropening camera back, insertion onto spool. Advances automatically toframe 1 with spring motor. Fully-wound spring motor powers film advancefor about 20 consecutive exposures. Continuous shooting speed at 2frames per sec.
Frame Counter	Counts up. Resets automatically when camera back is opened. Counter counts down during film rewind.
Film Rewind	Automatic rewind with fully-wound spring motor (rewind R button set) and shutter button.
Power Source	1.3 V HM-N mercury battery
Dimensions &           Weight	99 x 76 x 44 mm, 430 g

• Outline
• Specifications
• [url=]Ad[/url]

看介绍，好象是可以自动回卷的。

不止是暗角

谢谢LS的帮助，终于明白了，难怪大量照片焦不实
理论是可以自动回卷，但老机器老发条，金属的张力不够了，拖动片轴到一定程度就拖不动了。
按介绍一般应该是上满发条可以拍20多张没问题，可现在我只敢上一圈拍一张，发条上得紧了肯定故障……
这台60年代产的机器，测光有自动有手动、快门优先、发条上卷回卷，实在够神奇，绝对当时的高科技产品。可惜就是因为机械复杂，所以老化后容易出毛病的地方多，发挥不稳定啊

[ 本帖最后由 不止是暗角 于 2008-10-2 03:44 编辑 ]