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08-27-2013, 11:39 PM - 1 Like   #1
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So you want ridiculously sharp lens for little money?

Then get yourself a Sigma Macro 50mm f/2.8: Sigma 50mm F2.8 Macro Lens Reviews - Sigma Lenses - Pentax Lens Review Database
It's cheap. And it's sharp beyond reasons




08-28-2013, 04:45 AM   #2
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Totally agree with you. The Pentax D FA 50mm f2.8 Marco is also similarly sharp (and generally under appreciated.)

Also, I like your photo!
08-28-2013, 06:19 AM   #3
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Is this the manual focus or autofocus version?

We have the manual focus version. It doesn't get used that much, because our Pentax is my girlfriend's camera, and she doesn't do much macro work. When she does, it's usually tele-macro with a 70-300.

We did, however, get a few nice pics with this lens on our camping trip last weekend. I don't have them handy or I would post one.
08-28-2013, 06:51 AM   #4
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Indeed. It's not bad for a lens that I paid a little over $100 for.

Flickr Search: sigma










08-28-2013, 11:00 AM   #5
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QuoteOriginally posted by sunny16 Quote
Totally agree with you. The Pentax D FA 50mm f2.8 Marco is also similarly sharp (and generally under appreciated.)

Also, I like your photo!
Thanks Sunny! And yes I do want a D FA for little money, but that won't happen anytime soon

QuoteOriginally posted by thornburg Quote
Is this the manual focus or autofocus version?
This is the manual focus version reviewed here: Sigma 50mm F2.8 Macro Lens Reviews - Sigma Lenses - Pentax Lens Review Database. In normal use I found that it flares more easily than SMC coated lenses - no surprise there, but boy the sharpness and color saturation are just delicious. It's the easiest lens to use with focus peaking on my K-01. Most the time I don't even have to zoom in, as the peaking highlight are very obvious with this lens. That probably means its contrast is very good.
The photo was taken at f/8 for DOF. This lens is sharp wide open, but even at f/5.6 the DOF is quite shallow so I rarely use it wide open.
08-29-2013, 07:56 PM   #6
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1+ for the Sigma, though I think that the prize for best sharpness for the $ in my collection goes to the Rikenon-P 50/2. Mine was free (a very good price) and can hold its own in terms of sharpness with any other lens in my sig and several other fast 50s that are not in my sig.


Steve
08-29-2013, 08:37 PM   #7
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QuoteOriginally posted by prime.partisan Quote
Then get yourself a Sigma Macro 50mm f/2.8: Sigma 50mm F2.8 Macro Lens Reviews - Sigma Lenses - Pentax Lens Review Database
It's cheap. And it's sharp beyond reasons


I've been thinking of a 50mm macro but I wondered if the average distance to subject was either; better or worst than say a 90 or 100mm macro lens? Have you or anyone else here had the opportunity to compare?
08-29-2013, 10:37 PM   #8
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The minimum distance to subject is about 2 inches or so. I bet 100mm would be a lot further away, easier to do bugs.
IMO there're only 2 things really stand out about this lens: sharpness and price I have a Vivitar 55mm macro coming and will see if it'll offer the same bang for the bucks. It's a bit beat up cosmetically, but I hope the glass is still good.

08-30-2013, 11:12 AM   #9
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Virtually any of the old Pentax M or A 50mm macro lenses can be had for a reasonable price as can the M 100/4 macro. All are very sharp and worth a look. I have the A 100/2.8 macro and it is brutally sharp but still commands $700-1000 on Ebay.

Tom G
08-30-2013, 11:18 AM   #10
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There was a Vivitar 100/2.8 macro (Lester Dine) on shopgoodwill along with a M 50/1.7. That auction ended at $107 on August 14. My highest bid was $100, I just don't need any more lenses right now but I had to make a token bid at least.
08-30-2013, 08:12 PM   #11
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QuoteOriginally posted by JohnBee Quote
I've been thinking of a 50mm macro but I wondered if the average distance to subject was either; better or worst than say a 90 or 100mm macro lens? Have you or anyone else here had the opportunity to compare?
Worse (i.e. closer). This is a matter of focal length and is a non-negotiable. here is my copy of the Sigma 50/2.8 EX DG Macro at 1:1...




Steve

Last edited by stevebrot; 08-30-2013 at 08:29 PM.
08-30-2013, 08:19 PM   #12
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I agree this is a fine lens, performed as well as the Tamron 90 copy I had at the time. The shot above shows it's best for still life. I don't do enough over 1:2 so I let it go, but at times I miss it!
08-30-2013, 08:20 PM   #13
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QuoteOriginally posted by prime.partisan Quote
The minimum distance to subject is about 2 inches or so. I bet 100mm would be a lot further away, easier to do bugs.
The close focus distance to the filter ring is about 1.5" on the current model EX DG 50/2.8. A 100mm of similar design would be about 3.5". (The front element is inset about 0.5").


Steve
08-30-2013, 08:28 PM   #14
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QuoteOriginally posted by jimr-pdx Quote
The shot above shows it's best for still life.
So true. I use mine mostly for camera porn and flowers. For those purposes, it is hard to beat.




Steve
08-30-2013, 08:31 PM   #15
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I agree, it's an amazing lens, even when you don't consider that it's one of, if not the, cheapest true macro lenses available new. I got my older MF version for $110, and I liked it so much that I later got the modern version for $230 later on.

It also works great at non-macro distances. I didn't stop down at all for this shot. I dare you to look at it full size.

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