Promaster Spectrum 7 MC 28mm f2.8 review

  • Promaster Spectrum 7 MC 28mm f2.8 review

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One of my passions as a photographer is landscape photography. And one thing that never hurts to have in your bag if you enjoy shooting landscapes is a wide-angle lens.

Unfortunately I’m also a poor/cheap photographer. So, a really nice wide-angle lens has been out of my reach leading me to hunt for the elusive bargain basement variety. Now, don’t take this the wrong way – I really love shooting with odd, abandoned and sometimes more shady lenses. Because they can sometimes give you that unique look that you don’t get with really good glass.

Of course I wouldn’t normally suggest you take along your gaggle of misfit lenses on that very important shoot for your top client. Ticking off your client with artistic visions with screwy glass might not work out so well.

Promaster 28mm Video

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So, on the hunt I went. I spent days looking through sites like Ebay and Flickr making comparisons between what I found and what some of the shots looked like with different lenses. Making notes, getting shocked by prices that sort of thing.

I ended up bidding on a Promaster Spectrum 7 MC 28mm 1:2.8 lens, winning for around 18 bucks. That’s pretty good don’t you think? From what I can discern the Promaster is actually a re-badged Sigma Mini-wide II.

Some observations.

  • The Promaster offers a 28mm viewing angle on a traditional SLR sensor
  • On a dSLR 1.5 cropped sensor it offers a 42mm viewing angle
  • The Promaster offers a MC (Macro) feature
  • Some models have the Ricoh pin which will need to be removed when attached to a Pentax-K mount
  • Mostly plastic body construction
  • 6 blade aperture

In use this little lens actually performs very well. I’ve been pleasantly surprised by the results I get in both macro and wide angle positions.

Search for Promaster Lenses on eBay

At its widest angle I’ve been pleased with a minimum of chromatic aberration. I do get some distortion and a bit of barrel roll but, considering this isn’t a premium lens I find it acceptable.

At macro viewing angles it produced a fairly sharp image. And it holds up very well in lower lights situations. The example below was taken inside a butterfly sanctuary with less-than-stellar light conditions.

Dealing with the Ricoh Pin. You’re going to need to make a minor modification to get it to mount to your Pentax body. See, there is an extra pin that really serves no purpose on dSLR cameras. What happens is the extra pin gets stuck in the mount on modern Pentax cameras.

Instead of explaining this myself, I’m going to direct you to theaterofnoise for a detailed answer on how to fix this problem.

Here are some tips from my own experience doing this, in case it might help:

  • Have plenty of light
  • Mark how each part comes off or, take pictures of each step
  • Have a set of jewelers screw drivers
  • Tweezers
  • A lot of patience

Overall for the price and results I feel that this would be a great addition to the collection of any price-challenged photographer like myself.

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