mechanical issues when working with coupler ring and added lens

lowlandspentax · 10-25-2017, 05:13 AM

Hi,

For discovering el-cheapo macro photography you can buy coupler rings to mount a lens face to face with your standard lens, which should (will) permit close-up photography.

My question on this:
how bad is the added weight of the added lens for:
1. the screw-threads of the standard lens (in my K10D case the standard kit lens)?
2. the internal threads (used in/for focusing) of that standard lens?

I would not like to cause damage to any parts of my photo gear,

Thank you,
lowlandspentax

**Digitalis** · 10-25-2017, 05:50 AM

I would advise using manual focus primes for lens reversal macro photography. AF zoom lenses aren't really built to be used with another lens mounted on the threads* and the internal cams and tubes can flex and break. Generally speaking older K,M,A prime lenses are sturdy enough to be used for this. I'd suggest reverse mounting the M 135mm f/3.5 and the M 28mm f/3.5 - both of these lenses are very good on their own. Though the K 50mm f/1.7 mounted onto the SMC-A 100mm f/4 macro is a popular combination.

*If the filter threads are plastic be extra careful, as the extra weight of the lens could damage them.

Wheatfield · 10-25-2017, 08:20 AM

Also, best practice is to mount the short focal length on the front.

10-25-2017, 05:13 AM	#1
lowlandspentax Junior Member Join Date: Jan 2016 Posts: 32	mechanical issues when working with coupler ring and added lens Hi, For discovering el-cheapo macro photography you can buy coupler rings to mount a lens face to face with your standard lens, which should (will) permit close-up photography. My question on this: how bad is the added weight of the added lens for: 1. the screw-threads of the standard lens (in my K10D case the standard kit lens)? 2. the internal threads (used in/for focusing) of that standard lens? I would not like to cause damage to any parts of my photo gear, Thank you, lowlandspentax

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Male-Male Macro Coupler	atupdate	Pentax Camera and Field Accessories	13	11-14-2014 05:17 AM
DC Coupler for TIme Lapse	yellowruby	Pentax Q	8	01-15-2013 04:45 PM
Pentax K-x AC Coupler HELP	blackjackbuddy	Troubleshooting and Beginner Help	11	12-24-2010 09:12 PM
For Sale - Sold: Canon DC Coupler DC-E1 (only the coupler, no power adapter) (CONUS)	RayGunn	Sold Items	5	12-20-2010 07:04 PM
Older Sigma 70-200 2.8 bent coupler	vievetrick	Pentax SLR Lens Discussion	7	07-08-2010 08:27 AM

10-25-2017, 05:50 AM	#2
Digitalis Site Supporter Join Date: Mar 2009 Location: Melbourne, Victoria Photos: Gallery Posts: 11,695	I would advise using manual focus primes for lens reversal macro photography. AF zoom lenses aren't really built to be used with another lens mounted on the threads* and the internal cams and tubes can flex and break. Generally speaking older K,M,A prime lenses are sturdy enough to be used for this. I'd suggest reverse mounting the M 135mm f/3.5 and the M 28mm f/3.5 - both of these lenses are very good on their own. Though the K 50mm f/1.7 mounted onto the SMC-A 100mm f/4 macro is a popular combination. *If the filter threads are plastic be extra careful, as the extra weight of the lens could damage them.

10-25-2017, 08:20 AM	#3
Wheatfield Moderator Join Date: Apr 2008 Location: The wheatfields of Canada Posts: 15,991	Also, best practice is to mount the short focal length on the front.