[KM141]

I have been using 300d for 2 years until I recently changed to a 350d. I use a no of MF lenes, Contax CZ, Yashica, and M42s from East Germany and Russia. They all did well with 300d. But with the new 350d, when shooting in AV mode, I need to set the exposure compensation to -1.5 to -2 in order to get correct exposure rating,(in other words, when using 0 compensation, I constantly get over-exposed pix.,yet this did not happen with the 300d.) Does anybody encounter similar problem, and any fixes?
P.S. When using the kit lens and a Sigma 18-200, basically no exposure problem.

[platz]

I have a Russia Zenit(?) 16mm lens which worked ok with my EOS-3 but have the same case as yours. I suspect this may due to the F settings at 350D, which is set to F0.0, rather than F 1.0 in EOS-3.
Luckly you can view your photos in a DSLR.

[KM141]

To 167 等DX：
本人原用300D，也用CONTAX, YASHICA,及M42 的东菜和俄仔等手动头。最近换350D，却发现用手动头，以AV模式拍摄，竟然须减一级半到两级才能正常测光，以前300D 没有这情况，不明何因。未知DX曾遇这经验否？
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是有这个问题，但有的时侯又很正常，我也不太有经验，正在摸索中
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To 167 等DX：
http://www.nemeng.com/leica/002f.shtml
Canon EOS snafusnon-ROM lens exposure errors
Because Leica or Zeiss lenses lack a Canon-compatible ROM chip, TTL exposure problems can arise. For example, many users complain of consistent one-stop over-exposures when using their R lenses.

In April 2005 Bob Atkins noted:

Metering problems [with Canon EOS SLRs] can arise from a number of factors including the position of the exit pupil of the lens. My guess is that these factors are taken care of by data contained in the ROM of EF series lenses.

It's not at all unusual to see metering errors with MF lenses on EOS bodies [because they don't have the ROM chip]. The metering error may change with aperture too. See also the following April 2005 discussions for more details:



经过一番努力，最后在上面网址找到，原来MF镜头缺了EOS的ROM晶片，于是通过TTL测光，未经ROM补偿，便出现误差，而这误差更会跟光圈改变而改变。供参考。