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11-06-2007, 07:19 PM   #1
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Recommendations for inexpensive M 28mm f/2.8 or faster

There are so many variations on 28mm f/2.8 that I am looking to provide wider angle while fast enough as in f/2.8 or f/2.0.

Any suggestions, I don't mind the manual focusing and M42 as I have those M42 adapters:

m42 adapter
Pentax M42 adapters - Hin's Tech Corner

setup
Setup with Pentax M42 mount lens - Hin's Tech Corner

I saw Sears, super takumar, SMC M, kiron, tokina, and vivitar. Which one stands out in terms of quality with price consideration. Is Sears any good as I see very tempting price?

Thanks,
Hin

11-07-2007, 12:50 AM   #2
Igilligan
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I have an old Ricoh 28 2.8

Hi Hin,
Lots of great reports on the M28's 3.5 being sharp. But I know you are wanting a wide street shot lens at 2.8. But the 3.5 might work with your new tripod...
A S-M-C 28 2.8 would be good too.

As for cheap, I picked up a Richoh XR Rikenon 1:2.8 28mm for $20. I have not had a chance to do any night street shooting with it yet, but I like it indoors. If I get a chance I will try to take some night shots tomorrow when I head into the city to work.

-gus-
11-07-2007, 01:19 AM   #3
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All the lenses are probably good enough in center sharpness.
They differ in corner sharpness and contrast, with the third party lenses normally weaker.
The cheapest Pentax lens is probably the M 2.8/28, which you will get for 30-40 $.
11-07-2007, 01:38 AM   #4
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Since you already have the M42 adapter, why not consider the 28/3.5? I have one and it's a pretty good lens. And it won't break the bank. I don't think the difference between 2.8 and 3.5 is all that critical, especially at that shorter focal length, since you can go slower on handheld shutter speeds at 28 anyway.

11-08-2007, 11:24 PM   #5
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Thanks to all, I got M 28mm f/2.8 Macro from Albina brand

Thank you all for the valuable inputs. I ended up with a M 28mm f/2.8 from Albina brand for $11 dollars from ebay today. It is sort of risky but it has macro and it is quite cheap that I can afford to be risky. My original goal is to get the super takumar 28mm f/3.5 but I fail to bid up with a price less than $50. They mostly go above $70, some even priced at $90+ for buy it now. It sounds too high for a manual lens, even those with M42 mount are going up in price.

Thanks,
Hin
11-09-2007, 08:56 AM   #6
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Let us know how you like your "new" lens. The price was certainly right.

I have been very happy with my Super-Takumar 28mm f3.5. I know it's not as fast as you were looking for, but the lens performs well IMHO.

edit: Oh, I only paid $26.00 for mine back in September. Both caps, case, and even an original metal hood, all in excellent condition.
11-09-2007, 09:15 AM   #7
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I hope that it treats you as good as my Vivitar treats me Hin
11-09-2007, 12:38 PM   #8
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Thank you for the comments! Q on macro lens

A picture of the Albinar lens from ebay vendors



According to comments from another forum, the brand in albinar is not well known. I should have sticked with vivitar, tokina and the super takumar. But the odd thing in bid assistant with multiple items get me this instead of my other bidding in the group for super takumar 28mm f/3.5 for $50. I will know in another week.

By the way, I ask around for the Macro indicator with 1:10, 1:8, 1:5, 1:4 ... 1:1, the best one people say is 1:1 for full frame picture magnification. I don't really understand what it means. Can someone explain to me the difference between 1:1 (the good one) with 1:2 in a macro lens. Apology for my newbie naive question into macro lens.

Thanks,
Hin


Last edited by hinman; 11-09-2007 at 04:10 PM.
11-09-2007, 12:49 PM   #9
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Wow, 1:1 on a 28mm lens ? I'm curious to know at which distance from the front element the focus point ends up...

1:1 means that the image you photograph will have the same size on the sensor as it does in real life. I.e. the frame will be completely filled by an object of
24x16mm. 1:2 means objects are half life-size on the sensor.

On a semi-related note, I picked up a Tamron Adaptall-2 28mm f/2.5 with PK adapter for 50$ last weekend at a photo flea market. I have not had time to really try it out yet, however.

Last edited by RBellavance; 11-09-2007 at 01:06 PM.
11-09-2007, 04:12 PM   #10
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I would be happy if it is closer to 1:1

QuoteOriginally posted by RBellavance Quote
Wow, 1:1 on a 28mm lens ? I'm curious to know at which distance from the front element the focus point ends up...

1:1 means that the image you photograph will have the same size on the sensor as it does in real life. I.e. the frame will be completely filled by an object of
24x16mm. 1:2 means objects are half life-size on the sensor.

On a semi-related note, I picked up a Tamron Adaptall-2 28mm f/2.5 with PK adapter for 50$ last weekend at a photo flea market. I have not had time to really try it out yet, however.
Well, I don't think my $11 lens has that, from the picture, it is more likely 1:4. I am confusing readers as my lens can't be 1:1. As shown in the picture, it is more likely 1:4.

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hin
11-09-2007, 04:22 PM   #11
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I just can't picture a 28mm f2.8 having 1:1

My vivitar is just about my worst close up lens, although it excels in so many more areas.
11-09-2007, 05:39 PM   #12
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Here are a few shots from my RMC Tokina 28MM F2.8... Purchased on eBay for $28 if i remember correctly, I really like this lens !



11-09-2007, 06:33 PM   #13
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Very nice shots

QuoteOriginally posted by Stratman Quote
Here are a few shots from my RMC Tokina 28MM F2.8... Purchased on eBay for $28 if i remember correctly, I really like this lens !
Those are very nice shots. I wish the 28mm that I get can be closer to yours, I would be thrilled. How is the manual focusing and metering. I assume yours is K mount with manual on both focusing and metering. Please comment on the metering part and advice if you run into odd problems in metering.

Thanks,
Hin
11-09-2007, 09:41 PM   #14
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Yes Hin, it is a totally manual lens, just like using a Pentax "M" lens. Focusing is really smooth on it, and I just shoot in M mode with it, and hit the AE-L button to set the shutter speed, seems to meter pretty well for me. I was really surprised when i received this lens, it looks like it has never been used, like brand new.
11-15-2007, 04:45 PM   #15
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My Albinar 28mm f/2.8 K mount ($11)

My $11 Albinar arrives and it is K mount with Macro. I know nothing about macro. And I can get close up to 6" to the object, it that considered good? I would thought so for $11. Too bad, the lens does not come with 'A' setting and I find that flash won't work with the lens; otherwise, I have a good 28mm f/2.8. It is quite amazing when I test some macros today. The metering with indoor shots are great but somehow I get underexposed picture in outdoor. Here are few macro tests:

focus on the black dot


when zoom in, the broccolis is quite sharp


Is manual lens always have problems with flash? I am not sure if flash can be used for lens with 'A' setting on aperture. My $11 Albinar, with no A setting on aperture ring, still impresses me.

Hin


Hin Man wrote:
> I don't even know the brand. It is sort of risk taking. But it is a
> PK mount and I hope it fits the K mount. I pay $11 in the bid and
> with shipping, it is about $23.00 Not too bad if it actually works.
> I like this one as I have no macro in my gear
>
> A picture from the vendor:
>
>
> I am not someone who understands macro and I have hard time figuring
> out the meaning in the footprints for 1:10, 1:8, 1:5, 1:4 etc. and I
> thought the best macro is for 1:1 in magnification such as the Pentax
> 100mm and 50mm (I forget which one). Someone who doesn't mind my
> amateur question, what do those scales in 1:10, 1:8, 1:5, 1:4 ....
> 1:1 mean?
>
> Thanks,
> Hin
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