Exhibit 24

LIMITED POWER OF ATTORNEY FOR
SECTION 16 REPORTING OBLIGATIONS

	Know all by these presents, that the undersigned hereby makes,
constitutes and appoints John P. Calamos, Sr. and J. Christopher
Jackson as the undersigned's true and lawful attorneys-in-fact, with
full power and authority as hereinafter described on behalf of and in
the name, place and stead of the undersigned to:

(1)	prepare, execute, acknowledge, deliver and file Forms 3, 4 and 5
(including any amendments thereto) with respect to the securities of
Calamos Convertible Opportunities and Income Fund, a Delaware statutory
trust (the "Trust"), with the United States Securities and Exchange
Commission, any national securities exchanges and the Trust, as considered
necessary or advisable under Section 16(a) of the Securities Exchange Act
of 1934 and the rules and regulations promulgated thereunder, as amended
from time to time (the "Exchange Act");

(2)	seek or obtain, as the undersigned's representative and on the
undersigned's behalf, information on transactions in the Trust's securities
from any third party, including brokers, employee benefit plan
administrators and trustees, and the undersigned hereby authorizes any
such person to release any such information to the undersigned and
approves and ratifies any such release of information; and

(3)	perform any and all other acts which in the discretion of such
attorney-in-fact are necessary or desirable for and on behalf of the
undersigned in connection with the forgoing.

The undersigned acknowledges that:

(1)	this Power of Attorney authorizes, but does not require, such
attorneys-in-fact to act in their discretion on information provided to
such attorneys-in-fact without independent verification of such information;

(2)	any documents prepared and/or executed by such attorneys-in-fact
on behalf of the undersigned pursuant to this Power of Attorney will be
in such form and will contain such information and disclosure as such
attorneys-in-fact, in his or her discretion, deems necessary or desirable;

(3)	neither the Trust nor such attorneys-in-fact assumes (i) any
liability for the undersigned's responsibility to comply with the requirement
of the Exchange Act, (ii) any liability of the undersigned for any failure
to comply with such requirements, or (iii) any obligation or liability of
the undersigned for profit disgorgement under Section 16(b) of the Exchange
Act; and

(4)	this Power of Attorney does not relieve the undersigned from
responsibility for compliance with the undersigned's obligations under the
Exchange Act, including without limitation the reporting requirements under
Section 16 of the Exchange Act.

	The undersigned hereby gives and grants the foregoing
attorneys-in-fact full power and authority to do and perform all and
every act and thing whatsoever requisite, necessary or appropriate to
be done in and about the foregoing matters as fully to all intents and
purposes as the undersigned might or could do if present, hereby
ratifying all that such attorney-in-fact of, for and on behalf of
the undersigned, shall lawfully do or cause to be done by virtue of
this Limited Power of Attorney.

	This Power of Attorney shall remain in full force and effect
until revoked by the undersigned in a signed writing delivered to
such attorneys-in-fact.

	IN WITNESS WHEREOF, the undersigned has caused this Power of
Attorney to be executed as of this 12th day of July, 2018.



      /s/ Lloyd A. Wennlund
		Lloyd A. Wennlund