It is a manual focus lens but it could be an "M" series or "A" series or even a screw thread version as far as I can remember. It could also be a bellows lens etc so without being more specific I can't say other that it's definetley not autofocus and will be a good sharp lens whatever model it is but will only go to half size macro.
OP Bullion2 • Regular Member • Posts: 209
Re: SMC Pentax 100mm f1..4 Macro Lens f4 -f 32
Lance B • Forum Pro • Posts: 34,737
Re: SMC Pentax 100mm f1..4 Macro Lens f4 -f 32
In reply to Bullion2 • Jun 7, 2005
Bullion2wrote:Can anyone shed some light on this lens?
It's on e-bay, i'm thinking of bidding for it. I can't seem to find any info on it...
- Is it manual or autofocus?
I think it is a MF lens as Pentax did not make an f4 in AF that I know of.
* Is it a F1.4 or F4?
It is an F4 lens
* Is it any good?
Do not know
* How old is it?
Not sure without more info.
Look at this site and you will see what 100mm f4 macro lenses Pentax made as there are a few: //www.bdimitrov.de/kmp/
Go to "Lenses", then "Lens Data and Descriptions", then "Short Telephoto Prime Lenses". You will see the 100mm f4 macro lenses listed near the bottom of the table. Click on the various lenses to see a detailed description and picture. From this you should be able to glean what lens is on offer on ebay.
If you want to know how good it is, look at this site, but it only has one 100mm f4 listed: //stans-photography.com/
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Lance B
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Lance B • Forum Pro • Posts: 34,737
Re: SMC Pentax 100mm f1..4 Macro Lens f4 -f 32
In reply to Bullion2 • Jun 7, 2005
Aha. Now that you have posted that link to ebay I can tell you that it is a Manual focus lens and it is a Pentax SMC M 100mm f4 macro. It was made between the years of 1977 and 1984 and it's maximum magnification is 1/2 life size when used on a film camera. In other words, the image will be half life size on a 35mm negative. This means that if a bug was 36mm long in real life, it would be 18mm on the negative.
If you want to be able to use this lens on the DS, you will need to do stop down metering as this lens does not have an "A" setting so that the camera cannot select the aperture via the Av dial. The aperture must be selected via the aperture ring on the lens. -- Lance B
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Re: SMC Pentax 100mm f1..4 Macro Lens f4 -f 32
In reply to Bullion2 • Jun 7, 2005
It's a bayonet mount M series 100mm F4 macro. I have one of these and it's very good fun for macro but like all M lenses can only be used in manual mode on the D or DS. This isn't much of an issue with a macro lens as you normally aren't in a hurry. The only real disadvantage is that not having the "A" setting meant that you will have to use an external flash or work out the F stop manually for flash. If it's in good condition then the focusing will be smooth and the quality of the pictures should be excellent. I don't know what 200 Australian dollars is worth but in the UK they go for £50-100. I wouldn't pay any more though and only buy it if you need a MACRO lens if you want to portraits I'd buy a cheap 50 or 135 or something with at least F2.8 like a 90mm Tamron or Pentax 100 or 120.
OP Bullion2 • Regular Member • Posts: 209
Re: SMC Pentax 100mm f1..4 Macro Lens f4 -f 32
Ahhh! Thanks for the info Lance.
Sounds like I will skip the bidding on this lens...
cutterpup • Senior Member • Posts: 1,718
Re: SMC Pentax 100mm f1..4 Macro Lens f4 -f 32
I have that lens and I love it. Coupled with an extension tube it produces some amazing pics. I was at a flower photography workshop last year with a bunch of nikon and canon users. the instructor, who uses nikon himself, had referred to pentax and minolta users as cultists. he saw which lens I had and he praised it highly as being a very good quality, sharp lens. I paid $125 (USA) for it two years ago on ebay. -- Judy and The cutterpup 'pentax and proud of it'
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Re: SMC Pentax 100mm f1..4 Macro Lens f4 -f 32
people like that should banned from listing things on Ebay. -- Ryan S. Curtis //www.xanga.com/classicrockclassicjock
cutterpup • Senior Member • Posts: 1,718
Re: SMC Pentax 100mm f1..4 Macro Lens f4 -f 32
Perhaps the seller is ignorant of what the markings mean or it is a typo..mine clearly 1:4, so I can see the confusion if one is not aware. -- Judy and The cutterpup 'pentax and proud of it'
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brandrx • Forum Pro • Posts: 28,337
Lance...re-check your facts.
In reply to Lance B • Jun 7, 2005
I have this lens. It is a Pentax SMC Macro 100mm f4 This lens takes 52mm filters. I gave $69 for mine at KEH. It was rated "bargain" because it had a ding in the filter threads. Didn't plan on using filters with it, so I bought it.
The Pentax-M SMC Macro 100mm f4 is slightly smaller and takes 49mm filters.
I have seen this on more than one occassion and even read about it somewhere, but don't remember where, that the Pentax-M SMC lenses are smaller than the Pentax SMC lenses.
If I am wrong, then I stand corrected.
Ron
Lance Bwrote:Aha. Now that you have posted that link to ebay I can tell you that it is a Manual focus lens and it is a Pentax SMC M 100mm f4 macro. It was made between the years of 1977 and 1984 and it's maximum magnification is 1/2 life size when used on a film camera. In other words, the image will be half life size on a 35mm negative. This means that if a bug was 36mm long in real life, it would be 18mm on the negative. If you want to be able to use this lens on the DS, you will need to do stop down metering as this lens does not have an "A" setting so that the camera cannot select the aperture via the Av dial. The aperture must be selected via the aperture ring on the lens. -- Lance B
Lance B • Forum Pro • Posts: 34,737
Re: Lance...re-check your facts.
In reply to brandrx • Jun 8, 2005
brandrxwrote:I have this lens. It is a Pentax SMC Macro 100mm f4 This lens takes 52mm filters. I gave $69 for mine at KEH. It was rated "bargain" because it had a ding in the filter threads. Didn't plan on using filters with it, so I bought it.
The Pentax-M SMC Macro 100mm f4 is slightly smaller and takes 49mm filters.
I have seen this on more than one occassion and even read about it somewhere, but don't remember where, that the Pentax-M SMC lenses are smaller than the Pentax SMC lenses.
If I am wrong, then I stand corrected.
Well it is hard to tell exactly which one it is as they are so close in appearance. How do you know it is the K version and not the M version? Have a look at this site and tell me which one you think it really is: //www.bdimitrov.de/kmp/
The K version has a lip where the filter thread is which is the same as the one on ebay, but has 13 rubber ribs along the focus ring which would make it the M version. So it could be either.
RonLance Bwrote:Aha. Now that you have posted that link to ebay I can tell you that it is a Manual focus lens and it is a Pentax SMC M 100mm f4 macro. It was made between the years of 1977 and 1984 and it's maximum magnification is 1/2 life size when used on a film camera. In other words, the image will be half life size on a 35mm negative. This means that if a bug was 36mm long in real life, it would be 18mm on the negative. If you want to be able to use this lens on the DS, you will need to do stop down metering as this lens does not have an "A" setting so that the camera cannot select the aperture via the Av dial. The aperture must be selected via the aperture ring on the lens. -- Lance B
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Lance B
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brandrx • Forum Pro • Posts: 28,337
I stand corrected...
In reply to Lance B • Jun 8, 2005
Lance Bwrote:brandrxwrote:Well it is hard to tell exactly which one it is as they are so close in appearance. How do you know it is the K version and not the M version? Have a look at this site and tell me which one you think it really is:I have this lens. It is a Pentax SMC Macro 100mm f4 This lens takes 52mm filters. I gave $69 for mine at KEH. It was rated "bargain" because it had a ding in the filter threads. Didn't plan on using filters with it, so I bought it.
The Pentax-M SMC Macro 100mm f4 is slightly smaller and takes 49mm filters.
I have seen this on more than one occassion and even read about it somewhere, but don't remember where, that the Pentax-M SMC lenses are smaller than the Pentax SMC lenses.
If I am wrong, then I stand corrected.
I was going by the one I have in my hand and looking at the photo of the one on ebay. They did look idntical to me. However, now that you pointed out the 13 ribs versus 14 ribs, I can see the difference.
//www.bdimitrov.de/kmp/ The K version has a lip where the filter thread is which is the same as the one on ebay, but has 13 rubber ribs along the focus ring which would make it the M version. So it could be either.
Mine has the 14 ribs. It looks like the one on ebay is is the M version (13 ribs) and has a filter on it. That is what I think now. ~ Ron
RonLance Bwrote:Aha. Now that you have posted that link to ebay I can tell you that it is a Manual focus lens and it is a Pentax SMC M 100mm f4 macro. It was made between the years of 1977 and 1984 and it's maximum magnification is 1/2 life size when used on a film camera. In other words, the image will be half life size on a 35mm negative. This means that if a bug was 36mm long in real life, it would be 18mm on the negative. If you want to be able to use this lens on the DS, you will need to do stop down metering as this lens does not have an "A" setting so that the camera cannot select the aperture via the Av dial. The aperture must be selected via the aperture ring on the lens. -- Lance B
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Lance B
Lance B • Forum Pro • Posts: 34,737
Re: I stand corrected...
In reply to brandrx • Jun 8, 2005
brandrxwrote:Lance Bwrote:brandrxwrote:Well it is hard to tell exactly which one it is as they are so close in appearance. How do you know it is the K version and not the M version? Have a look at this site and tell me which one you think it really is:I have this lens. It is a Pentax SMC Macro 100mm f4 This lens takes 52mm filters. I gave $69 for mine at KEH. It was rated "bargain" because it had a ding in the filter threads. Didn't plan on using filters with it, so I bought it.
The Pentax-M SMC Macro 100mm f4 is slightly smaller and takes 49mm filters.
I have seen this on more than one occassion and even read about it somewhere, but don't remember where, that the Pentax-M SMC lenses are smaller than the Pentax SMC lenses.
If I am wrong, then I stand corrected.I was going by the one I have in my hand and looking at the photo of the one on ebay. They did look idntical to me. However, now that you pointed out the 13 ribs versus 14 ribs, I can see the difference.
//www.bdimitrov.de/kmp/ The K version has a lip where the filter thread is which is the same as the one on ebay, but has 13 rubber ribs along the focus ring which would make it the M version. So it could be either.Mine has the 14 ribs. It looks like the one on ebay is is the M version (13 ribs) and has a filter on it. That is what I think now.
I am not saying that I am correct, but I was just pointing these things out. I am not 100% sure whether it is the M or the K as there are conflicting indicators going by the pic on ebay.
~ RonRonLance Bwrote: Aha. Now that you have posted that link to ebay I can tell you that it is a Manual focus lens and it is a Pentax SMC M 100mm f4 macro. It was made between the years of 1977 and 1984 and it's maximum magnification is 1/2 life size when used on a film camera. In other words, the image will be half life size on a 35mm negative. This means that if a bug was 36mm long in real life, it would be 18mm on the negative. If you want to be able to use this lens on the DS, you will need to do stop down metering as this lens does not have an "A" setting so that the camera cannot select the aperture via the Av dial. The aperture must be selected via the aperture ring on the lens. --
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Lance B
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