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07-08-2015, 07:40 AM - 1 Like   #16
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I purchased mine through the marketplace here, for $125; it is a stunner of a lense:





07-08-2015, 08:10 AM   #17
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I got my A100 for $200, but I primarily use it as the first lens of a coupled series for more extreme macro. As a stand alone, my new DFA 100 kinda blows it away.
07-08-2015, 05:59 PM   #18
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QuoteOriginally posted by Bunch Quote
I got my A100 for $200, but I primarily use it as the first lens of a coupled series for more extreme macro. As a stand alone, my new DFA 100 kinda blows it away.

At around 5 times the price, it should. But without photos how can we tell.
07-08-2015, 06:51 PM   #19
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more with the old 100mm f4:





07-08-2015, 07:50 PM   #20
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A fine lens.I bought mine in the late seventies, and until my DA 35 Macro LTD arrived, it was my ultimate lens if I needed detail. My M100/4 also suffers from lamination clouding, but not to a degree I can notice the effects.
07-09-2015, 07:32 AM - 1 Like   #21
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QuoteOriginally posted by bluestringer Quote
At around 5 times the price, it should. But without photos how can we tell.
The DFA was only about 2.5x the price, brand new. Here are a couple shots: the bee shot is the full frame with the A 100, the robber fly is a heavy crop with the DFA.
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07-09-2015, 05:38 PM   #22
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Great shots. The A 100 is a little more in price than the M. I have the M version which I paid only 90 dollars for. I can't see 400-500 dollars difference in my photos with a M 100 and photos shot with a DFA 100. Not with my eyes anyway.
07-09-2015, 05:58 PM   #23
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I shoot a lot of macro, and having a lens that goes 1:1 natively, without using tubes or coupling lenses, has been a lot more enjoyable for me. I will always keep the A 100 to use as a coupler when I want to go beyond 1:1, since the DFA has no aperture ring and can't be coupled effectively. Unless Pentax ever makes a lens like the Canon mp-e, but I doubt that will ever happen. But by itself the DFA out resolves the A100f4. I can't crop down as far and get the sharpness I get with DFA, and the rounded aperture blades make for great bokeh. Plus, ya know, WR. The cost was worth it to me.

07-10-2015, 04:47 AM   #24
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QuoteOriginally posted by Bunch Quote
I shoot a lot of macro, and having a lens that goes 1:1 natively, without using tubes or coupling lenses, has been a lot more enjoyable for me. I will always keep the A 100 to use as a coupler when I want to go beyond 1:1, since the DFA has no aperture ring and can't be coupled effectively. Unless Pentax ever makes a lens like the Canon mp-e, but I doubt that will ever happen. But by itself the DFA out resolves the A100f4. I can't crop down as far and get the sharpness I get with DFA, and the rounded aperture blades make for great bokeh. Plus, ya know, WR. The cost was worth it to me.


I can see the sharpness in that cropped photo of the robber fly. I shoot a lot of macro also, I have a Vivitar 55 2.8 macro that does 1:1 natively, and it's a really nice lens. I also have the M-50 f4, a nice lens but it's 1:2 also. The Vivitar does most of my 1:1 stuff, but the working distance is small. If I need more distance I'll put a 50mm tube on the 100 and get 1:1.
07-10-2015, 05:09 AM - 1 Like   #25
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I have that M50f4 as well. Try putting that on the end of your 100 mounted on tubes. You get about 3:1


Last edited by Bunch; 07-10-2015 at 05:43 AM.
07-10-2015, 05:51 AM   #26
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Here is a complete dental macro kit. The flash works in TTL mode on the ist ds, and works OK at 1/4 on the K-01

I took this photo with the K-01 and AF360FGZ at 1/800th and f/8 , messing around with High Speed Sync and the diffuser
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Last edited by wombat2go; 07-10-2015 at 06:00 AM.
07-10-2015, 12:58 PM - 4 Likes   #27
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M-100 f4 heavy crop............

Last edited by bluestringer; 03-08-2016 at 07:12 PM.
07-10-2015, 01:15 PM   #28
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QuoteOriginally posted by wombat2go Quote
Here is a complete dental macro kit. The flash works in TTL mode on the ist ds, and works OK at 1/4 on the K-01

I took this photo with the K-01 and AF360FGZ at 1/800th and f/8 , messing around with High Speed Sync and the diffuser

I take it that is a ring-flash designed for the M or A 100?
07-10-2015, 01:39 PM   #29
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QuoteOriginally posted by pepperberry farm Quote
I take it that is a ring-flash designed for the M or A 100?
It's the AF080C. It is designed for lenses with filter sizes of 49mm or 52mm, and the A100, similarly to F, and FA versions has filter size of 58mm. Haven't tried with step-down rings, as M100 and D FA 100mm are all I have on this macro range.
07-10-2015, 02:32 PM   #30
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Is this lens similar in design to the earlier SMC Takumar 100/4? That has impressed me similarly to some of the flower and plant pictures in this thread.
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