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06-19-2015, 12:45 PM   #1
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Choosing the right lens

Hello , i bought a k-50 1 year ago and I made some Photography courses. I familiarized with it and I want to get a new lens. I got a Tamron 28-300 for about 130$ but i just think it is not what I want for my photography career because it is made for family photography and not for a real photographer. I was just excited because the price was so good and I bought it. Now i plan to sell it for like 200-250$ and get a new lens . My photography 'teacher' uses Nikon cameras and lenses so he can't help me get the right lens. I discovered that for me , the range 90-300 is almost useless because i mostly shoot portraits and that 'street photography' . I think I need a lens betwen 40-70mm. I did some research and I found some Limited lenses at a good price . Can you guys tell me what kind of lens may be the best for me? I would really appreciate it.

06-19-2015, 01:26 PM   #2
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See if you can get a Sigma 24-70 f/2.8. I think one is in the marketplace for a decent price. The image quality should be a big step up from what you currently have.
06-19-2015, 01:47 PM   #3
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If you want to have only one lens, the Sigma 17-70 or Pentax 16-85 are my top two recommendations.
06-19-2015, 01:54 PM   #4
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I forgot to say that I have the kit lenses too , the 18-55 . Thank you for your answers , I will search for the lenses you recommended now

06-19-2015, 01:58 PM   #5
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DA* 55mm and the 77 limited might be two to consider if looking at Prime lenses

DA* 50-135mm might be nice for you.. if looking at zooms.
06-19-2015, 02:02 PM   #6
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The Sigma 24-70 got some negative reviews and everybody says is overpriced , the Sigma 17-70 looks good but the Pentax 16-85 is too expensive . If I won't find better lens in one or two weeks i will go for the 17-70 . Thank you both for your answers

---------- Post added 06-19-15 at 02:05 PM ----------

I cannot afford the DA* because they are over mu budget , i have a budget of around 500$ .
06-19-2015, 02:14 PM - 1 Like   #7
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Honestly if You are doing mostly portraits and you use 40-70mm only. Get a Pentax-FA or Pentax-F: 1.4/50mm or 1.7/50mm or even the 2.8/50mm macro That's what a "real photographer" would do
06-19-2015, 02:20 PM - 1 Like   #8
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Welcome to the forum.

If your not worried about autofocus... there are plenty of fine manual focus primes secondhand that will do the job for you. Allowing budget to be left over for something else too.

06-19-2015, 03:14 PM   #9
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QuoteOriginally posted by Sliver-Surfer Quote
Honestly if You are doing mostly portraits and you use 40-70mm only. Get a Pentax-FA or Pentax-F: 1.4/50mm or 1.7/50mm or even the 2.8/50mm macro That's what a "real photographer" would do
Both the 1.4/50mm and the 1.7/50mm look promising. If I may ask , what does de 2.8/50mm has to offer and what would you chose betwen the 3 of them?

---------- Post added 06-19-15 at 03:20 PM ----------

I considered them but I never tried to use manual focus at portraits . I am affraid that it will be hard and I won't be able to capture the right moment. I wear eyeglasses too and I can't make the perfect focus manually.
06-19-2015, 03:29 PM - 1 Like   #10
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QuoteOriginally posted by Cosmin Quote
Both the 1.4/50mm and the 1.7/50mm look promising. If I may ask , what does de 2.8/50mm has to offer and what would you chose betwen the 3 of them?

---------- Post added 06-19-15 at 03:20 PM ----------

I considered them but I never tried to use manual focus at portraits . I am affraid that it will be hard and I won't be able to capture the right moment. I wear eyeglasses too and I can't make the perfect focus manually.


Your K-50 has some focusing aids that you might find helpful; check out "focus peaking.". Also, the diopter of the viewfinder is adjustable to match your vision.


The DA-50mm f1.8 and the DA 35mm f2.5 "Plastic Fantastic" lenses are inexpensive, lightweight and perform way above their price point. Good Luck.
06-19-2015, 04:19 PM   #11
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QuoteOriginally posted by dakight Quote
Your K-50 has some focusing aids that you might find helpful; check out "focus peaking.". Also, the diopter of the viewfinder is adjustable to match your vision.


The DA-50mm f1.8 and the DA 35mm f2.5 "Plastic Fantastic" lenses are inexpensive, lightweight and perform way above their price point. Good Luck.
My diopters are much bigger than the camera's viewfinder (-4.5) . Thanks for the tip , the 50mm F1.8 is 100$ now and I hope it will be like thar after 2 or 3 weeks
06-19-2015, 05:03 PM   #12
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QuoteOriginally posted by Cosmin Quote
Both the 1.4/50mm and the 1.7/50mm look promising. If I may ask , what does de 2.8/50mm has to offer and what would you chose betwen the 3 of them?
I would choose pentax-fa 1.4 it's magic

the Pentax-FA 2.8 Macro does close up like wedding rings, baby hands/feet head shots of small pets, It is good for Regular portraits since in my opinion 2.8-5.6 is the perfect portrait range.
2.8 for individuals
3.5-4 for pairs
4-5.6 for families
06-19-2015, 05:41 PM - 1 Like   #13
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OP says he wants lenses from 40-70 and we get so excited about spending other people's money that we immediately recommend stuff outside that range!

OK, Cosmin, I would buy lenses one by one, so that you can check that you are going in the right direction, and so you can verify your progress. I would start by buying two lenses, first the DA70 then the DA50 f1.8. These are very good lenses, and extend your focal length range. The fifty is within your kit lens's range I admit, but the kit lens at fifty is not very good, and the nifty-fifty is much better. I wouldn't buy the 35 f2.4 yet because the kit lens is quite good in the middle of its zoom range.

Then, after a few months, weeks or even days, depending on how rich you are, I would consider getting the DA 21 (my favourite lens) or start looking for a used 90 or 100 mm macro lens. I have the Pentax 100WR, and I often do heavy crops to make it even more of a telephoto.

To be honest, I wouldn't hurry to get rid of that veeery long zoom lens yet, there may be times when 200-300 might be very useful, and the resale price won't go down much anyway.
06-19-2015, 06:07 PM - 1 Like   #14
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Actually, before you spend any money, set your kit lens to 50mm and take it out and photograph. See if that focal length works for your type of photography. If not, well obviously avoid 50mm prime lenses hehe.

That said, I'd probably avoid primes in your situation and get a nice zoom. Hmmm.. maybe try a Sigma 17-70 f/2.8-4 lens. Within your focal and cost requirements and plenty sharp and fast.
06-19-2015, 08:24 PM - 1 Like   #15
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$500 could be tough, but with a good break the DA40 and DA70 could squeeze in. Both are excellent optically and really small -- and you save $ on a camera bag that way The idea of testing yourself by "locking" the 18-55 at 40 or 50mm is a good idea though, note when that doesn't work for you and in which direction and you will know your next goal!

Sounds easy but I confess: I only choose the right lenses by endlessly owning the not-quite-right ones for a while
I know I'm not the only one though!
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