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01-11-2012, 10:26 AM   #61
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For my needs a 1.8 will definitely be suitable for now. Especially as I'm trying to just find a cheap portrait lens to play with

01-11-2012, 10:38 AM   #62
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you won't be sorry, and once you buy a Tak and have the m42 adapter there are sooooo many tempting lenses for very reasonable prices
01-11-2012, 11:20 AM   #63
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I've noticed that there are! For a college student like myself good, cheap lenses are fantastic!
01-11-2012, 01:15 PM   #64
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QuoteOriginally posted by abacus07 Quote
Don't bother with teleconverters (1.4x, 1.7x, 2x). If it's cheap (<$100) then you don't want to put it in between your lens and the camera.
I didn't mean behind-the-lens (mounted) TCs, but the screw-in type, like a Raynox with reach. Most are crap. A few aren't: my Sony 1.5x cost me US$4; I saw an Olympus 1.4x for US$10 last week; I've seen others from Canon and Kowa. I search for them here. Plug in 1.4x, 1.7x, etc for searching. Avoid those with rear (mounting) threads smaller than 46mm. Some come supplied with step-rings for mounting on various-side lenses. I've used 46mm-thread optical adapters on 62mm-front-thread lenses (like my DA18-250) without vignetting.

Advantage of such over a mounted TC: they don't eat light. Yes, they impact IQ a little, but much less than wide screw-ins, and it's almost unnoticeable if you bump contrast and saturation a little. I put my Sony VCL-1546A on a Super-Tak 55/2 and it becomes an 82/2 with wide-open performance very much like my Jupiter-9 85/2 (which costs rather more). Put it on a 50/1.4 and it becomes a slightly soft 75/1.4 with razor-thin DOF. A pro setup? Probably not. But a 55/2 plus the 1/5x TC is a very cheap portrait rig to play with, which I think was the expressed desire.

QuoteQuote:
You could get some extension tubes for macro with a relatively cheap 50mm lens.
Yes, that's one of the cheapest ways to get into macro. I'll again point to https://www.pentaxforums.com/forums/pentax-lens-articles/152336-cheap-macro-b...lose-work.html . I mention various tube-types there.

QuoteOriginally posted by jbuck92 Quote
What kind of adapter is recommended for an M42 mount? And same question for the 1.4x/1.5x screw on adapter/focusing helicoid/M42 tubes. Never used any of those items and don't know what they do/are.
IMHO everyone with one or a few screwmount lenses should have one Official Pentax M42-PK adapter. It's safe and tedious, turning your dSLR into an M42 camera. Lots of arm-twisting when changing lenses. Those of us with many many M42s tend to buy piles of cheap clone adapters. Worry about those when LBA takes over, eh?

For macro or portrait or other close work with screwmount lenses, it's good to have one or more cheap safe wide-flange NIF (no-infinity-focus) M42-PK adapters.

I just bought on eBay a Chinese M42 focusing helicoid, 17-35mm, for under US$60 shipped. (A year ago they were nearly twice the price!) Search eBay CAMERAS for M42 HELICOID and ye shall find. I can put a 50mm enlarger lens (EL) on it for close work. I can put a short M42 tube section behind a 75mm EL and focus out to infinity, or close for portraiture.

EL lenses are very sharp -- edge-to-edge flatfield sharpness is their forte -- and very cheap, sometime literally four for a dime. If the helicoid's price is a bit steep, a 75mm EL can instead be put on M42 tubes for fixed-focus use, another portraiture solution. Many ELs have 39mm threads and so need a dirt-cheap M39-M42 ring.

How cheap here? My Vivitar-LU 75/3.5 was US$7; M39-M42 ring was US$3; one set of M42 macro tubes are ~US$7, but get two sets; wide-flange NIF M42-PK adapters are ~US$5. So, 7+3+7+7+5= 29. Pretty cheap for a sharp-portrait setup, eh?

01-12-2012, 12:24 AM   #65
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Thanks! I found a Pentax-M 50/2 for $20. Should I grab that or would the tak 55/1.8 be better? I at least dont need an adapter with the 50/2 for my K-r right?
01-12-2012, 01:07 AM   #66
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I have both the M50/2 and the ST55/1.8 and like them both. The 55/1.8 has the advantage of the slightly faster speed, the M50 has much better flare control due to improved coating. As I prefer the handling of M42 lenses over the Ms on a digital body, the 55/1.8 tends to get more use.


01-12-2012, 01:11 AM   #67
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QuoteOriginally posted by jbuck92 Quote
Thanks! I found a Pentax-M 50/2 for $20. Should I grab that or would the tak 55/1.8 be better? I at least dont need an adapter with the 50/2 for my K-r right?
The M50/2 is a decent lens, that's a typical price, and no adapter is needed.
The SuperTak 55/1.8 is a GREAT lens, an adapter is needed; US$50 is typical.
The M50 is good for playing around. The ST55 will last a lifetime. Your choice!
01-12-2012, 02:03 AM   #68
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Hmm think ill try to find a ST55/1.8 then and just use a bit of my Xmas money for it!

01-12-2012, 04:17 PM   #69
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PentaxWebstore.com: Mount Adapter K(35m m Screwmount to Bayonet)

Is this the m42 pentax adapter?
01-12-2012, 05:24 PM   #70
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That's the one!
01-22-2012, 10:26 PM   #71
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I've been trying to find it but haven't been able to; What is the difference between the FA50/1.4 and the F50/1.4 that causes the F to be rated higher in the review section?
01-23-2012, 04:43 AM   #72
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QuoteOriginally posted by jbuck92 Quote
I've been trying to find it but haven't been able to; What is the difference between the FA50/1.4 and the F50/1.4 that causes the F to be rated higher in the review section?
Don't worry about the ratings as long as the overall rating is good, as it is for both of these; the numeric ratings are unreliable beyond a very general indication. There should be very little difference between these lenses beyond appearance and possibly build quality. Optically they should be identical or nearly so.
01-25-2012, 04:56 PM   #73
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Alright thanks!
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