CONTAX CLUB Carl Zeiss 討論區

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 文章主題 : ZM 25/2.8 Biogon
文章發表於 : 週日 01 7月 12 09:00:58 
討論區會員

註冊時間: 週五 27 1月 06 12:09:10
文章: 492
來自: Singapore
Just bought this lens recently, after almost a year wait after placing order with Fotographfix. Probably wrong timing due to the Japan nuclear plants issues as this lens is made by Cosina in Japan. Guess it is too late a time to talk about this lens as much has been discussed on the internet since the launch of the lens : D.

What make me curious about this lens is its good comments almost everywhere over the ZM 28/2.8, its very impressive MTF and what Zeiss has demonstrated using very fine grain black and white film with a shot from hot air balloon.

I did a quick and non-scientific test between the ZM 25/2.8 and ZM 28/2.8 and think for my purposes they are equally good and the same amazing Zeiss quality. All my ZM lenses were early production batches. This late production ZM 25/2.8 now the focusing smoothness and damping is as good as the made in Germany ZM 15/2.8 and 85/2.

My test up was using a Voigtlander R4M with Kodak Portra 400 on tripod, mounted on a Metz 60MZ4 flash bounced at the ceiling. I have decided to compare based on same image coverage so the ZM 25 was moved slightly forward to cover the same composition. I used the f5.6 shots for comparison as the f2.8 ones I think there was inconsistency in focusing. The negative was scanned by the developing shop, but I could not see any significant difference in the first 16base scan so I asked for a scan in 63MB tiff. http://www.fuwen.net/index.php?option=c ... Itemid=192

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Below are crops from computer screen at the centre (Contax RTS III), the left (Rollei 35RF) and the top right (Contax Aria). Left are those from ZM 28, right are those from ZM 25.


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I find the ZM 25 is consistent with the rest of the ZMs. So far I have been very happy with the ZM 28 I used for many years.

_________________
Rolleiflex 3003, SL2000F - Rolleiflex SL66E - SONY Alpha 7R1 7R2
Carl Zeiss C/Y T* - QBM HFT - M HFT, ZM T* - ZF T* - Batis T* - Otus T*
http://www.fuwen.net


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 文章主題 :
文章發表於 : 週日 01 7月 12 09:03:06 
討論區會員

註冊時間: 週五 27 1月 06 12:09:10
文章: 492
來自: Singapore
Oops wrong code. Moderator can help? Thanks.

Can also use the link above to see the same images in my website.

_________________
Rolleiflex 3003, SL2000F - Rolleiflex SL66E - SONY Alpha 7R1 7R2
Carl Zeiss C/Y T* - QBM HFT - M HFT, ZM T* - ZF T* - Batis T* - Otus T*
http://www.fuwen.net


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 文章主題 :
文章發表於 : 週日 01 7月 12 10:17:45 
幹事
幹事

註冊時間: 週五 28 11月 03 23:54:34
文章: 13672
來自: Hong Kong SAR
Fixed. :wink:

_________________
Best Regards,
圖檔
香港互聯網康泰時攝影會幹事


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 文章主題 :
文章發表於 : 週日 01 7月 12 10:28:51 
討論區會員

註冊時間: 週五 27 1月 06 12:09:10
文章: 492
來自: Singapore
Thanks Terry! Can help also to fix the image just after the 4th paragraph, showing the original photograph.

_________________
Rolleiflex 3003, SL2000F - Rolleiflex SL66E - SONY Alpha 7R1 7R2
Carl Zeiss C/Y T* - QBM HFT - M HFT, ZM T* - ZF T* - Batis T* - Otus T*
http://www.fuwen.net


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