All around lens choice


davidstorm

Link Posted 24/07/2013 - 21:54
There's a DA 55-300 for sale on here at a decent price:

link

Regards
David
Flickr

Some cameras, some lenses, some bits 'n' bobs

PJMcKenna

Link Posted 25/07/2013 - 21:41
I use the Samsung version of the K-10D and have used both the 50-200 and 55-300 DA lenses on it, both are good lenses but I have to admit my preference for the 55-300 as it's got that extra 100mm of reach but either have always helped me shoot nice crisp images.

My walk-round "everyday lens" is a Sigma 18-200 which I find works well enough within the limitations of a Superzoom.
Cheers Paul

Pentax K5, DA 18-55 WR, DA 18-135 WR, DA 55-300 ED, DA 35 f2.8 Macro Limited, A 50 f1.7, DA 50 f1.8
Samsung GX10, D-Xenon 18-55, SEF-36PZF Flash
Sigma 10-20 EX DC f4-5.6

DaveHolmes

Link Posted 25/07/2013 - 23:00
DA35 2.4 would get my vote as a step up from the 18-55 kit but if its reach you're after then by all accounts the DA55-300 is a stunner...

I don't tend to shoot long so my DA50-200 does me just fine when I really need the reach...
........................................................................
Digital:
Pentax K5- Vivitar 19mm 3.8; FA35mm f2; D-Xenon 100mm macro f2.8; DA50-200mm WR...
Flash:
Yongnuo YN-560; Vivitar 285HV; Cactus V4 triggers...
Film:
Pentax-MX & M50mm f1.4; Spottie & 55mm f1.8; MG & M40mm 2.8...

http://www.flickr.com/photos/daveholmesphotos/

McGregNi

Link Posted 26/07/2013 - 08:49
stratosk wrote:
I must admit that i don't have yet any special interest for a particular type of photography (sports, macro, landscapes etc). I try to shoot everything i feel i must do. I was just thinking for a lens that can cover almost every occasion (but i think it's not possible, at least for a cheap lens). For example my first thought was tamron 18-200. A lens that i could have on my pentax all the time, without the need to switch.

I understand the attraction to the idea of a single 'superzoom'. This effectively makes the DSLR more like a 'bridge' type camera, which doesn't allow different lenses.

Practical, yes, but ultimately limiting and a compromise in quality and flexibility terms. It may seem like a chore to have to change lenses, and sometimes yes, it might take time when you just want to keep shooting. But it is the option to use the exact right lens for the type of shot that can make DSLR work such a special thing
My Guides to the Pentax Digital Camera Flash Lighting System : Download here from the PentaxForums Homepage Article .... link
Pentax K7 with BG-4 Grip / Samyang 14mm f2.8 ED AS IF UMC / DA18-55mm f3.5-5.6 AL WR / SMC A28mm f2.8 / D FA 28-105mm / SMC F35-70 f3.5-4.5 / SMC A50mm f1.7 / Tamron AF70-300mm f4-5.6 Di LD macro / SMC M75-150mm f4.0 / Tamron Adaptall (CT-135) 135mm f2.8 / Asahi Takumar-A 2X tele-converter / Pentax AF-540FGZ (I & II) Flashes / Cactus RF60/X Flashes & V6/V6II Transceiver

PJMcKenna

Link Posted 04/08/2013 - 20:56
Agreed Nigel, from experience with my Sigma 18-200, I've found that the "all in one" lens used on the GX-10 is fine between 18-135mm (the words optically compromised spring to mind) but the resolution falls off above 135mm. IQ at longer focal lengths is way, way better using the DA 55-300.

Cheers
Paul
Cheers Paul

Pentax K5, DA 18-55 WR, DA 18-135 WR, DA 55-300 ED, DA 35 f2.8 Macro Limited, A 50 f1.7, DA 50 f1.8
Samsung GX10, D-Xenon 18-55, SEF-36PZF Flash
Sigma 10-20 EX DC f4-5.6

RussV

Link Posted 05/08/2013 - 09:10
When it comes to a budget telephoto, I can vouch for the 1980's Tokina SDII SZ 70-210. I got a pristine copy on Ebay for 40 ( and I've seen others). It's manual focus with PKA mount and takes excellent pictures. One of the original selling points was lack of chromatic abberations, and it's true. Also the same size as an 18-55 until extended.
www.russv.me.uk
Last Edited by RussV on 05/08/2013 - 09:15

stratosk

Link Posted 08/08/2013 - 13:18
It's been a long time since i first posted on the forum about my query for an all around use lens. I thank you all for your answers! It's very nice to see people i've never met or know personally, to try to help me with their best effort! I really appreciate it!
To our subject now, i made a little study about lenses, IQ, zoom lenses pros and cons and i made a decision about my first lens i am gonna buy (soon i hope!).
It will be a prime (please don't get angry! i know it's a 180 degree turn from my initial subject for a lens, and you were trying to help me all this time!)
I believe for my case, a beginner photographer who wants to really learn about photography a prime lens will be the best choice. First of all, the image quality of a prime, is far better from any zoom. Secondly, a prime lense is "faster" which it means that i can use it on low light situations. And thirdly, it will help me on composition. Another good point is that a prime is cheaper than a good iq zoom lens.
So now my question is:

Pentax Smc DA 35mm F/2.8 or
Pentax Smc DA 50mm F1.8

And i believe my final choice would be Pentax Smc DA 50mm F1.8!

What do you think?

johnriley

Link Posted 08/08/2013 - 13:54
I think you've already made up your mind....

The 35mm is the "standard lens" and the 50mm is a modest telephoto most suitable for portraiture.
Best regards, John

McGregNi

Link Posted 08/08/2013 - 14:00
Oh come on, you really do want that 55-300 surely ??

But you've made a persuasive case for the purchase of a good prime - all those you list are good positive aspects of using a prime. If you feel these mid-range focal lengths will suit the subjects you need to shoot, then go for it!

Check out the reviews and find a good deal - you won't be disappointed with many DA primes I'm sure.

Standard or 'consumer' grade zooms will always introduce more compromise into the equation, either in maximum aperture available (at both ends) and other image quality issues (maybe reduced sharpness, aberrations and distortions).
My Guides to the Pentax Digital Camera Flash Lighting System : Download here from the PentaxForums Homepage Article .... link
Pentax K7 with BG-4 Grip / Samyang 14mm f2.8 ED AS IF UMC / DA18-55mm f3.5-5.6 AL WR / SMC A28mm f2.8 / D FA 28-105mm / SMC F35-70 f3.5-4.5 / SMC A50mm f1.7 / Tamron AF70-300mm f4-5.6 Di LD macro / SMC M75-150mm f4.0 / Tamron Adaptall (CT-135) 135mm f2.8 / Asahi Takumar-A 2X tele-converter / Pentax AF-540FGZ (I & II) Flashes / Cactus RF60/X Flashes & V6/V6II Transceiver

hoopsontoast

Link Posted 08/08/2013 - 15:03
Dare I say another option could be a small zoom. I previously would suggest a nice little prime (DA35mm, DA 40mm, FA 43mm, FA 50mm etc) but I have been very impressed with my FA 20-35 f4.
It gives you a nice medium wide to 'normal' FOV on the APS-C body.
Its not as fast as say the fast 43mm f1.9 or 50mm f1.7, but it is sharp wide open at f4 where as I have found the FA 43 needs to be f2.8 and smaller to really get the best out of it IME and doesn't really have much of an advantage in real world low light situations.
As a walk around lens, I prefer the 20-35 over the 43, the 43 is better for specific subject photography or portraits.

Just an idea
D-FA28-105 | FA43 | K55 | DA100 Macro | DA*300
Pentax K1 | Pentax K-01 | Pentax MZ-S | Pentax MZ-5n
Flickr Photostream

stratosk

Link Posted 09/08/2013 - 12:19
One quick question about the focal length of a lens:
When we say that a lens has a 50mm focal length, we mean that this FL stands for a 35mm film camera, is that correct? According to the manual of k10d, to find the actual focal length i must be multiply the lens FL by 1.5 because of the smaller sensor, or this stands to find which would be the focal length to a 35mm camera? The actual question is: does the stated focal length of a lens is real to a digital camera, or the general convention for focal lengths is based on the 35mm full frame?

I saw an ad that confused me for the da 50mm 1.8 and the seller noted:

"Mounted to a camera with an APS-C sensor, this lens gives an angle of view equivalent to a 76.5mm telephoto lens--ideal for portraits."

So the da 50mm is actual 75mm and the 35mm is 52.5mm ?

If this post is irrelevant to the original post, please move it to the right section!

Thank you in advance!

johnriley

Link Posted 09/08/2013 - 13:11
A 50mm lens is always a 50mm lens. When you put it in front of an APS-C sensor it sees a smaller area than if you put it in front of a "full frame" sensor or film camera.

What changes is the field of view. So, the 50mm lens on an APS-C DSLR such as Pentax will give a similar field of view to using a 75mm lens on a full frame or film camera. There's your 1.5x crop factor. But it's still a 50mm lens.

Just to put this in perspective, standard lenses, giving a normal field of view are:
15mm for Minox sub-miniature "spy cameras"
24mm for 110 film format
35mm for APS-C DSLRs
50mm for full frame DSLRs and film 35mm cameras
75mm for 645
80mm for 6x6cm

Because there are so many sizes of digital sensor it has become convenient to quote a "35mm equivalent" to give people a better idea of what a given lens will do. This means a bit more to people when there are so many figures bandied about that I'm sure it can become very confusing.
Best regards, John

stratosk

Link Posted 09/08/2013 - 13:42
Thank you John!

Yes, of course a 50mm lens will be always 50mm lens!
I was meant that the field of view changes because of the sensor!
Now i totally understand the difference! Thank you very much John!
That means that a normal lens for a non full frame dlsr is about 35mm. The "old standard" 50mm for a normal lens was for the 35mm film cameras (or full frame dslrs!).
So the SMC DA 50mm 1.8 we can say that it is a small tele, not very good for inside pictures.
A true normal for the non full frame dslr, which is the closest compared to what the human eye can see, is the SMC DA 35mm f2.8 (correct me if i am wrong again!)

Thank you very much!

hoopsontoast

Link Posted 09/08/2013 - 13:57
Or a 28mm lens which gives you ~43mm FOV on APS-C....
D-FA28-105 | FA43 | K55 | DA100 Macro | DA*300
Pentax K1 | Pentax K-01 | Pentax MZ-S | Pentax MZ-5n
Flickr Photostream

johnriley

Link Posted 09/08/2013 - 13:58
You've got it. The DA 35mm f/2.4 is the bargain of the decade, superb lens at a very low price.
Best regards, John
Add a Comment
You must be registered or logged-in to comment.