Lens Options?


ZRman

Link Posted 29/01/2008 - 13:49
Hi everyone

I recently bought a Pentax K100D and love it but i want a zoom lens as the kit lens it came with doesnt really give me much freedom to zoom far away to take wildlife pics etc.

So what are my options? for example:

Do they have autofocus, How much are zoom lenses, What makes will fit, and where would i be looking to pick one up?

Thanks for taking the time to read this and i hope you can help

Thanks

Donut

Link Posted 29/01/2008 - 13:57
Really depends on: -
a) budget
b) whether you want to swap and change lenses.

If you have a reasonable budget and want a single lense solution you could look at the likes of Tamrons 18-250 for about 275

Alternatively I use a Tamron 70-300 for the telephoto stuff on my K100D - cost me <100. I really like this lens and it has a useful 1:2 macro. But it's not really suitable as an every day lens as it doesn't go wide enough for most so I have to swap with my kit 18-55.

Finally you could blow the budgt and get a high quality prime (>1000) or the well regarded sigma 50-500 (700)

Donut

ZRman

Link Posted 29/01/2008 - 14:06
Erm i was thinking the sub 100 lenses lol

Just was wondering if there were any i could look out for cheap on ebay, as im not really that good at photography i just want one thet is going to give me a good zoom rather than the kit lens.

Thanks for the reply

amilner

Link Posted 29/01/2008 - 14:12
in that case you are really limited to finding a S/H 70-300 or similar - recent Tamron and Sigma models are both good, and the pentax 80-320 is also good but you probably won't get that for less than 100. You could also look out for the Pentax FA-J 70-300. Butwhichever lens you choose you will need to use in in conjunction with your kit lens rather than as a replacement.
Tony Milner
Super A, ME Super, MZ6, K5II, Ricoh GR & lenses from 8-500mm
www.amilner.org www.flickr.com/photos/tonymilner

MX veteran

Link Posted 29/01/2008 - 14:35
There are always lots of older Manual focus lenses for sale. If you learn how to use the camera with these they can save you a bundle! I have a limited budget and works for me!
K100D Super, 18-55, 50-200, Sigma 10-20, Sigma 70mm macro and lots of old lenses

ZRman

Link Posted 29/01/2008 - 14:43
Ok thanks,

Im looking on the net now and alot are sigma and say for nikon or canon are they not universal? Do they have to say pentax to fit?

Daniel Bridge

Link Posted 29/01/2008 - 15:20
ZRman wrote:
Do they have to say pentax to fit?

Yes.

Each manufacturer has their own 'mount', so you need to make sure you get one with the Pentax mount.

Dan
K-3, a macro lens and a DA*300mm...

beakynet

Link Posted 29/01/2008 - 15:23
ZRman wrote:
Ok thanks,

Im looking on the net now and alot are sigma and say for nikon or canon are they not universal? Do they have to say pentax to fit?

Yes it must say Pentax Fit. I would suggest a KA type or newer (has an 'A' setting on the aperture ring) as this will maintain all the automatic functions except focus, however, the focus indicator will work and give you a good idea when your frame is in focus.

I have the Sigma 18-200 and don't deen to change lenses often, I got this over the Tamron 18-250 (Pentax do their own version) because the focus was faster and quiter. This might be a good investment and reduce the liklihood of sensor dust. You should be able to get one for about 180 I think.

I also have an old Sigma 70-300 KA lens, very good but very heavy and a little difficult to focus in low level light.

If you want a super telephoto, it is worth noting that you can get 2x conveters that fit on the front of the lens on eBay (about 49 with postage on top). I can't vouch for these but I must admit to being temptes as a 36 to 400mm zoom sounds the business!
Bodies: K5IIs, K7, MZ5n, LX, MV
Lenses: DA*16-50, DA18-55WR, DA18-135, DAL35, M50 F2, A50 f1.4, FA50 f1.4, DA*50-135, DA55-300, Tamron 70-300, DFA 100 WR Macro, M135 f3.5, Sigma 120-400 APO DG HSM, Tokina 500 f8.0
Flash: Metz 58, Metz 48
Accessories: BG4, Pentax right angle finder, Pentax mirror adaptor lens, O-ME53 Viewfinder Loupe
Auto 110 System: Auto 110, Winder, 18mm, 24mm, 50mm, 70mm, 20-40mm, AF100P, 1.7x telecon

iceblinker

Link Posted 29/01/2008 - 15:40
For a 100 budget, I suggest looking on ebay or the web for:

Pentax 50-200mm, or the Samsung equialent (virtually the same thing).

or Tamron 70-300mm Di LD

The 50-200 is wonderfully compact and lightweight.

The Tamron is larger, but slightly sharper (up to 200mm), and also has a larger maximum aperture at 200mm. Excellent value for money.

All the above come with hoods. Not all old Pentax lenses do.

All modern lenses for Pentax are auto-focus.
~Pete

Donut

Link Posted 29/01/2008 - 15:42
I've got a spare Tokina 70-210 AF if you're interested - looking for about 40. Nice lens but heavy by todays standards.
Donut

mikew

Link Posted 29/01/2008 - 21:25
I managed to get a nearly new Samsung 50-200 lens for 90 quid from eBay. It's a very nice lens although not the widest of apertures. What is nice is its size and weight, both are very modest although it extends when you zoom or close focus which is irritating but I can live with it.

The Samsung lenses are indeed almost equivalent to the pentax branded ones although the range is very limited from Samsung. There's a guy in Canada who does a good deal on the 50-200 Pentax lens.

Mike

Donut

Link Posted 30/01/2008 - 13:05
I picked up What Digital Camera today and on page 7 they say that www.cameraworld.co.uk are selling Tamron AF 55-200 for 69. That's got to be a good bet for what you are looking for.
Donut

MX veteran

Link Posted 30/01/2008 - 13:46
2X converters are a mixed bunch and can give very poor results. Often it is better to use a quality lens and just crop your pictures. I have a Tamron 500m mirror lens and a Tamron SP 2X converter, and the results are always better without it.
K100D Super, 18-55, 50-200, Sigma 10-20, Sigma 70mm macro and lots of old lenses

ZRman

Link Posted 30/01/2008 - 14:09
Donut wrote:
I picked up What Digital Camera today and on page 7 they say that www.cameraworld.co.uk are selling Tamron AF 55-200 for 69. That's got to be a good bet for what you are looking for.
Donut

Yea but that one is only available for canon and nikon apparently. and the one you are selling is 210 which means it will zoom in further is this correct?

mikew

Link Posted 30/01/2008 - 14:19
I may be wrong but I'd have thought that the difference between 200 and 210 is negligible. I think you need to ask yourself why you want a longer telephoto zoom lens - might it be better to wait a while until you've used your new camera a bit and then assess what you need to get which might be a prime lens of 300mm say.

Mike
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