Sigma 70mm f/2.8 EX DG Ma... se ha añadido a la cesta

Sigma 70mm f/2.8 EX DG Macro PAF - Objetivo para Pentax (distancia focal fija 70mm, apertura f/2.8 f stop), negro

4.0 de un máximo de 5 estrellas 1 opinión de cliente

Precio: EUR 539,10
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  • Introduzca su número de modelo más arriba para comprobar que sirve.
  • Distancia focal fija de 70 mm
  • Distancia más cercana de enfoque de 25 cm
  • Diafragma con 9 hojas
  • Ángulo de visión diagonal máximo de 43,3°

Información de producto

Nombre de estilo: Para Pentax
Detalles técnicos
Nombre del modeloMACRO 50mm F2.8 EX DG (Pentax)
Año de fabricación2007
Peso del producto526 g
Dimensiones del producto9,5 x 7,6 x 7,6 cm
Número de modelo del producto270109
Número de producto270109
Aparatos compatiblesPentax, SLR
Otras característicasEstructura de lente: 10/9, Tamaño de filtro: 6,2 cm
Dimensión de la pantalla3 pulgadas
Ángulo de visión43.3 grados
Tiene estabilización de imagenNo
Zoom óptico 1 X
Velocidad máx. de obturación1/4000 s seconds
Apertura mín. 22
Longitud focal mín.70 milímetros
Pilas / baterías incluidasNo
Pilas / baterías necesariasNo
Velocidad de fotografía en ráfaga7.00
Tipo de lenteMacro
Compatibilidad del montaje Pentax
Ángulo de visión real43.3 grados
Enfoque automático
Incluye batería recargableNo
Información adicional
Clasificación en los más vendidos de Amazon nº603.229 en Electrónica (Ver los 100 más vendidos)
Producto en desde26 de marzo de 2007

Descripción del producto

Nombre de estilo:Para Pentax

Otras características:
Ampliación: 1:1x
Color del producto: Negro
Componente para: SLR
Distancia más cercana de enfoque: 0,25m
Diámetro: 7,6 cm
Estructura de lente (elementos/grupos): 10/9
Longitud: 9,5 cm
Número de hojas de diafragma: 9
Peso: 525g
Productos compatibles: Pentax
Tamaño de filtro: 6,2 cm
Tipo de lente: Macro
Ángulo de visión diagonal (max): 43,3°

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Nombre de estilo: Para Pentax
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Preguntas y respuestas de los clientes

Opiniones de clientes

4.0 de un máximo de 5 estrellas
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Principales opiniones de clientes

Nombre de estilo: Para Pentax Compra verificada
Estoy muy contento con este objetivo, si bien es cierto que para determinadas situaciones queda un poco corto los 70mm macro pero la verdad que para el uso que le doy me encanta. Tiene una calidad muy buena con mi Pentax K 5 y el tamaño adecuado para retrato. .... Lo único que me desagrada un poco es el Hood que va a rosca y es un poco molesto de poner y sacar. Pero claro si lo usas para flores bajo el sol es imprescindible... Ah su peso es considerable y la velocidad de AF es un poco lenta pero para el uso que le doy yo es la adecuada....
Comentario A 3 personas les ha parecido esto útil. ¿Esta opinión te ha parecido útil? No Enviando comentario...
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Opiniones de clientes más útiles en (beta) 4.7 de un máximo de 5 estrellas 60 opiniones
40 de 42 personas piensan que la opinión es útil
5.0 de un máximo de 5 estrellas Great Lens at a great price 17 de enero de 2008
Por Gary Gray - Publicado en
Nombre de estilo: Para Nikon Compra verificada
I've never been a big fan of Sigma Zoom lenses, but their prime lenses are top notch. I've been using the Sigma 105mm and 50mm macro primes on my Canon full frame bodies so I decided to pick this lens up for my Nikon D300 to give me a 105mm equiv lens for that system.

In a nutshell, this lens is fantastic. It is very sharp corner-to-corner on my Nikon D300. It is sharp wide open at f/2.8 and stays sharp up until about f/11, where it starts to soften just a bit. Lens construction is very sturdy and typical of the top-end sigma primes. Autofocus speed is adequate but not as fast as the best Nikon lenses. It also makes a little more noise when focusing. Manual focusing is excellent with a very smooth and precise feel. I really like this lens and it may be one of the sharpest prime lenses on the market. I highly recommend it.
20 de 20 personas piensan que la opinión es útil
5.0 de un máximo de 5 estrellas Recommended buy 21 de marzo de 2007
Por Seboto - Publicado en
Nombre de estilo: Para Nikon
This lens performs better than I expected. I bought this lens for macro and with the 1:1 ratio, it gives great pictures. With its f/2.8 at 70mm (which is equivalent to a 105mm in digital) it does work brilliantly for portraits (I thought it could be slightly slow but it is not at all!).

At this price, it is a great lens to have in your bag.
16 de 16 personas piensan que la opinión es útil
5.0 de un máximo de 5 estrellas Amazing hunk of glass and metal 27 de febrero de 2008
Por William C. Daniel - Publicado en
Nombre de estilo: Para Pentax
After researching macro lenses and considering my uses, I decided that I would get more use from a 70mm macro than other focal lengths such as 50 or 105. I see this lens as primarily a 70mm with macro capability for my purposes. And it is a great lens. Very sharp for all distances. Very nice color, contrast, etc. Solid construction, smooth focusing both manual and auto. This is a hunk of gear that is excellent in almost every way.

And HUNK it is. Heavy, big. Be prepared for this. Use a can of peas to get the idea. This isn't a complaint; on my Pentax K10D, it balances well and is a pleasure to hold. But it will start weighing you down after time around the neck.

My negative comments: The lens hood should be sized tighter so that it stays in place when reversed and you place it in a bag. The Sigma 'EX' crinkle finish is fine but not my favorite. The supplied case is bigger than it needs to be and yet doesn't provide much padding.

My most used lens. I didn't know that 70mm on an APS-C sensor (105mm equivalence for 35mm) would be such a nice focal length but it has become my new 'standard' lens.
65 de 77 personas piensan que la opinión es útil
3.0 de un máximo de 5 estrellas It's good, but it's *not* a constant f2.8 lens (edit: most Macro aren't!) 8 de junio de 2009
Por Peter Chenoweth - Publicado en
Nombre de estilo: Para Nikon Compra verificada
Bought this to pair with my Nikon D90. It's a sharp lens that's very pleasant to use. As the other reviewer said, it's a 'nice' length on an APS-C sized sensor, ~105mm. Sharpness is on par with the venerable Nikkor 50mm f1.8, IMHO. So that's great. Not unexpected though, as this is supposedly Sigma's sharpest prime lens and it's a Macro lens, which by definition has to be tack sharp. Build quality seems very good too. All in all, it's a nice lens at a good price.

Focus is slow compared to AF-S lenses, but only because there's such a huge focal range. This lens does seem hunt a lot on my D90, even in bright light. It'll often have to run the focus across the entire range to get a lock, and that's a pain. However, flipping the focus limiter switch solves it and makes it focus just as fast as my other non AF-S lenses. So that's ok. And for macro shots I'd usually be focusing manually anyway, so it's not a big deal. But it's just not quite as quick as my AF-S lenses.

I also don't like the fact that the lens cap won't snap on when the sunshade is screwed on. Makes it a bit of a pain when you're out and about and want to cap the lens, as you've got to unscrew the shade (and put it somewhere - it doesn't reverse) to put the cap on. A pain compared to Nikkor shades that allow the cap while they're installed, even while reversed.

But there is one major negative that none of the other reviews have touched upon. And it's nearly a deal-breaker for me. This is NOT a true f2.8 fixed lens. It is from 10ft to infinity, but below that the max aperture grows as the subject distance decreases. At 1:1 magnification, 3-4 inches away, maximum aperture is f4.8. This is not really what I had in mind when I bought this lens, and I may return it because it's not going to work as well as I had hoped. I bought an f2.8 lens expecting a constant aperture. I was wrong. I actually think it's a bit of deceptive advertising on the part of Sigma. Since it's primary purpose is to be a Macro lens, they should be clear that it's an f2.8 lens only at decidedly non-macro focal ranges. This is really an f4.8 Macro lens, which isn't so great. So just be advised before you purchase this lens.


Apparently, a variable aperture at decreasing macro distances is common to many macro lenses, including Nikon's own 60mm f2.8 and 105mm f2.8 macro lenses. So I can't pick on Sigma too much for this. I'm new to the world of dedicated macro lenses, and I didn't know this 'feature' was just the way these lenses worked. Taking this into consideration, the 70mm Sigma is perhaps more deserving of four (4) stars, rather than three. I'd edit my star rating but I can't.

This also makes me reevaluate my comments about potentially returning this Sigma. I was strongly considering returning the Sigma and picking up the 60mm f2.8 Nikkor Macro instead. I had assumed that the Nikkors would be truly constant f2.8 lenses. I would have been wrong! Since the Nikkor's do this variable aperture thing too, I'm thinking I'll just keep the Sigma - as other than this aperture thing, it's a great lens. Lesson learned! :-)
13 de 13 personas piensan que la opinión es útil
5.0 de un máximo de 5 estrellas Tack-sharp 12 de abril de 2008
Por P. Henry - Publicado en
Nombre de estilo: Para Minolta Compra verificada
While of fairly substantial heft, the optics on this lens, as noted in many reviews, are terrifically sharp. If you judiciously use the focus limiter, it's perfectly suitable (actually even excellent) for portraiture. The fast aperture also helps keep ISO (and therefore noise) low, too.

The detail in macro-closeups is truly remarkable!

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Nombre de estilo: Para Pentax