ICEINSPACE
Most Read Articles
Moon Phase
CURRENT MOON Waxing Gibbous
95.3%
The Sun Now
Time Zones
Sydney
7:43 am
Perth
5:43 am
Auckland
9:43 am
New York*
5:43 pm
Paris*
11:43 pm
GMT
9:43 pm




Go Back   IceInSpace > IceTrade Classifieds > IceTrade Archives

 
 
Thread Tools Rate Thread
  #1  
Old 11-10-2017, 11:07 AM
Wombat (Wayne)
Registered User

Wombat is offline
 
Join Date: Feb 2009
Location: Mount George N.S.W. Aust.
Posts: 45
Pentax Lenses

I have 2 Pentax mount lenses for sale,
70-300m f4-5.6 DG Macro Sigma telephoto lens, $75.00 + postage [Sold]
18-55mm f 3.5-5.6 Pentax SMC DAL lens, $50.00 + postage

Prefer bank to bank transfer of funds.
All lenses are in good condition and have not had much use.
I am selling these as I do not have a pentax camera anymore so these must go to a good home.
Attached Thumbnails
Click for full-size image (IMG_1187-70-300mm (1296 x 864).jpg)
150.5 KB52 views
Click for full-size image (IMG_1200-70-300mm (1296 x 864).jpg)
149.6 KB39 views
Click for full-size image (IMG_1201-18-55mm (1296 x 864).jpg)
125.5 KB41 views

Last edited by Wombat; 28-12-2017 at 09:47 AM.
  #2  
Old 13-11-2017, 11:20 AM
Sconesbie (Scott)
Registered User

Sconesbie is offline
 
Join Date: Dec 2013
Location: Legana, Tasmania
Posts: 243
Hi Wayne.

I have a Pentax KM (about 9 years old). It already has an 18-55 on it. I currently use this one to photograph milky way (with reasonable success).

As I am not a photography person, what would the 70-300 do for me?
  #3  
Old 14-11-2017, 10:20 AM
Wombat (Wayne)
Registered User

Wombat is offline
 
Join Date: Feb 2009
Location: Mount George N.S.W. Aust.
Posts: 45
70-300 Lens

Hello Scott,
You may need a telescope mount reasonably aligned to the pole
for short exposures or a spot on alignment for long exposures of the stars without producing star trails. If this lens had a very short focal ratio say f2.0 then you could do short exposure and stack them, but the lens is f4-5.6 so the shutter has to stay open longer.
Some people do very short exposures and stack them to produce a very good image and examples of this can be found on the web.
Forest Tanucker in the US has a video on You Tube showing a demonstration of how to do this, it very well done and he used a 70-200mm Canon lens.
The 70-300 lens is great for daytime work.
  #4  
Old 14-11-2017, 12:55 PM
Sconesbie (Scott)
Registered User

Sconesbie is offline
 
Join Date: Dec 2013
Location: Legana, Tasmania
Posts: 243
Thanks Wayne. How can I check if it will fit on my camera?
  #5  
Old 14-11-2017, 07:40 PM
OzEclipse's Avatar
OzEclipse (Joe Cali)
Registered User

OzEclipse is offline
 
Join Date: Jun 2012
Location: Canberra, Australia
Posts: 941
Scott,

Wayne is being very honest with you about the speed aspect of the lens.

The lens mount will fit and communicate all aperture and focus data to your camera. The DG type lens has enough coverage for APS-c format sensors like your camera, if you upgrade to a full frame camera, the lens won't cover the field of the sensor but it's fine for your camera's APS sensor.

I have no experience with this particular lens can't tell you how good its optical performance is. Typically cheaper zoom are not bad on axis and off axis at shorter focal lengths becoming soft in the corners at the high end of the zoom range. But this is a general observation of this type of lens, not specific to this lens.

In summary, it's good value for money but it's obviously not a top quality high end lens. The Pentax 300mm f4 EDIF is a very very sharp lens but costs 20 times more than Wayne is asking for this lens.

Hope this helps you decide.

Joe
  #6  
Old 15-11-2017, 10:39 AM
Sconesbie (Scott)
Registered User

Sconesbie is offline
 
Join Date: Dec 2013
Location: Legana, Tasmania
Posts: 243
Thanks Joe. I wasn't querying Wayne's description or honesty. I just wanted to know what it would do and would it fit my camera body. I know very little about cameras and lenses.

I understand the value of the lens is very well priced and I am interested in buying it.


Regards
Scott
  #7  
Old 15-11-2017, 10:53 AM
Wombat (Wayne)
Registered User

Wombat is offline
 
Join Date: Feb 2009
Location: Mount George N.S.W. Aust.
Posts: 45
70-300 Lens

Hello Scott,
The lens will fit on your camera and will work well and is a good all round lens.
  #8  
Old 15-11-2017, 10:55 AM
Sconesbie (Scott)
Registered User

Sconesbie is offline
 
Join Date: Dec 2013
Location: Legana, Tasmania
Posts: 243
Thanks Wayne. Can you please advise postage cost to Launceston, Tas.
 

Bookmarks

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 07:43 AM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Advertisement
NexDome Observatories
Advertisement
OzScopes Authorised Dealer
Advertisement
FLI Cameras and Imaging Accessories
Advertisement
SkyWatcher 2018 Catalogue
Advertisement
Atik Horizon
Advertisement
SkyWatcher WiFi Adaptor
Advertisement
Bintel
Advertisement
Lunatico Astronomical
Advertisement
Interest Free Finance
Advertisement
Astronomy and Electronics Centre
Advertisement