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12-03-2009, 05:02 AM   #1
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SMC Pentax-M 100mm F4 Macro

I am looking to buy this lens and found one on ebay but the description says that there is some light haze in the glass but that it is not enough to affect the performance of the lens. Just wondering if anyone has any experience with light haze in a lens and how it affects lens performance? would a small bit of light haze in a lens still affect lens performance??

Also I will be using this lens on a K200d. Just wondering if anyone has used this lens on a similar Pentax and how they got on using it.

Here is a link to the lens on ebay.....
eBay.ie: PENTAX M 100mm f4 K Lens-Macro K1000/K200D/K20D/K10D... (item 180434489371 end time 18-Dec-09 21:56:55 GMT)

Thanks

12-03-2009, 05:22 AM   #2
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I use mine on bellows and are very pleased with the results I get from it. Never had a light haze issue though. f32 is nice for macros...

12-03-2009, 09:01 AM   #3
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That description is confusing. Here is the actual quote:

"The optics are crystal clear internally without any , fungus or noticeable scratches or dust. Please note that there is some light haze in the glass but nothing which will effect the quality or performance of this lens. "

I just don't know what that means. Crystal clear seems like the opposite of haze.

The lens itself is excellent. The only drawback to it is it only does 1:2 magnification, or half life-size. It is a much better macro lens than I am a macro photographer. Of course, when I found a deal on a better lens, I "needed" to upgrade. (Ha!)
12-03-2009, 09:11 AM   #4
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Light haze not affect performance? I guess it depends on how you define performance. The price seems a little high by US standards, even without the haze.

Steve

12-03-2009, 09:29 AM   #5
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Thanks for all your replies.....I have decided to keep looking for the lens without any haze or other defects.

As far as the price goes I have not seen it for any cheaper over here in Ireland. What is the standard price for the lens in the U.S?
12-03-2009, 10:52 AM   #6
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QuoteOriginally posted by Jordan Quote
Thanks for all your replies.....I have decided to keep looking for the lens without any haze or other defects.

As far as the price goes I have not seen it for any cheaper over here in Ireland. What is the standard price for the lens in the U.S?
About $150 USD, though I have seen them go for under $100 USD back when I was in the market for a macro lens.

Steve
12-03-2009, 12:00 PM   #7
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If my currency calculations are right, that lens is $165, plus $15 shipping. If shipping and import fees aren't too bad from the US, here is a possibility:

http://www.keh.com/Product-Details/1/PK060000138750/PK06/FE.aspx
12-04-2009, 03:55 PM   #8
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M50/4

Allways liked this lens better... I would suggest you keep an eye for this one as well.

Ludvik

12-05-2009, 06:51 AM   #9
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I like the 100 F4 and have a set of extension tubes that take it past 1:1 magnification.

It is a very sharp lens, and I like the working distance the lnoger focal length offers.

Having said that however, I have put together a screw mount macro system for less than $100, which includes a 50mm F4 super Tak macro and a set of authentic pentax screw mount extension tubes.

the 50mm goes directly to 1:1 and with more than 50mm of extension tubes I should get some really good magnification
12-05-2009, 07:15 AM   #10
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My husband just picked me up the old M42 mount version of this, and it has the same slight haze problem going on. However, I have yet to see it affect any of the test photos I've been taking. Though this might change once I get a KatzEye and can actually focus it well.
I say get it if you can. It was an awesome buy off of eBay.
12-07-2009, 01:56 PM   #11
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thanks for all your comments...still on look out fort his lens. hopefully will pick it up soon
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